19 files changed, 1038 insertions, 588 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index efda9a022981..cf77987d0698 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -21,7 +21,7 @@
 #include "iostat.h"
 #include <trace/events/f2fs.h>
 
-#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
+#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_RT, 3))
 
 static struct kmem_cache *ino_entry_slab;
 struct kmem_cache *f2fs_inode_entry_slab;
@@ -58,7 +58,7 @@ static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
 							bool is_meta)
 {
 	struct address_space *mapping = META_MAPPING(sbi);
-	struct page *page;
+	struct folio *folio;
 	struct f2fs_io_info fio = {
 		.sbi = sbi,
 		.type = META,
@@ -74,37 +74,37 @@ static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
 	if (unlikely(!is_meta))
 		fio.op_flags &= ~REQ_META;
 repeat:
-	page = f2fs_grab_cache_page(mapping, index, false);
-	if (!page) {
+	folio = f2fs_grab_cache_folio(mapping, index, false);
+	if (IS_ERR(folio)) {
 		cond_resched();
 		goto repeat;
 	}
-	if (PageUptodate(page))
+	if (folio_test_uptodate(folio))
 		goto out;
 
-	fio.page = page;
+	fio.page = &folio->page;
 
 	err = f2fs_submit_page_bio(&fio);
 	if (err) {
-		f2fs_put_page(page, 1);
+		f2fs_folio_put(folio, true);
 		return ERR_PTR(err);
 	}
 
 	f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);
 
-	lock_page(page);
-	if (unlikely(page->mapping != mapping)) {
-		f2fs_put_page(page, 1);
+	folio_lock(folio);
+	if (unlikely(folio->mapping != mapping)) {
+		f2fs_folio_put(folio, true);
 		goto repeat;
 	}
 
-	if (unlikely(!PageUptodate(page))) {
-		f2fs_handle_page_eio(sbi, page_folio(page), META);
-		f2fs_put_page(page, 1);
+	if (unlikely(!folio_test_uptodate(folio))) {
+		f2fs_handle_page_eio(sbi, folio, META);
+		f2fs_folio_put(folio, true);
 		return ERR_PTR(-EIO);
 	}
 out:
-	return page;
+	return &folio->page;
 }
 
 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
@@ -381,12 +381,6 @@ redirty_out:
 	return AOP_WRITEPAGE_ACTIVATE;
 }
 
-static int f2fs_write_meta_page(struct page *page,
-				struct writeback_control *wbc)
-{
-	return __f2fs_write_meta_page(page, wbc, FS_META_IO);
-}
-
 static int f2fs_write_meta_pages(struct address_space *mapping,
 				struct writeback_control *wbc)
 {
@@ -507,7 +501,6 @@ static bool f2fs_dirty_meta_folio(struct address_space *mapping,
 }
 
 const struct address_space_operations f2fs_meta_aops = {
-	.writepage	= f2fs_write_meta_page,
 	.writepages	= f2fs_write_meta_pages,
 	.dirty_folio	= f2fs_dirty_meta_folio,
 	.invalidate_folio = f2fs_invalidate_folio,
@@ -1237,7 +1230,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
 retry_flush_quotas:
 	f2fs_lock_all(sbi);
 	if (__need_flush_quota(sbi)) {
-		int locked;
+		bool need_lock = sbi->umount_lock_holder != current;
 
 		if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
 			set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
@@ -1246,11 +1239,13 @@ retry_flush_quotas:
 		}
 		f2fs_unlock_all(sbi);
 
-		/* only failed during mount/umount/freeze/quotactl */
-		locked = down_read_trylock(&sbi->sb->s_umount);
-		f2fs_quota_sync(sbi->sb, -1);
-		if (locked)
+		/* don't grab s_umount lock during mount/umount/remount/freeze/quotactl */
+		if (!need_lock) {
+			f2fs_do_quota_sync(sbi->sb, -1);
+		} else if (down_read_trylock(&sbi->sb->s_umount)) {
+			f2fs_do_quota_sync(sbi->sb, -1);
 			up_read(&sbi->sb->s_umount);
+		}
 		cond_resched();
 		goto retry_flush_quotas;
 	}
@@ -1344,21 +1339,13 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
 	unsigned long flags;
 
-	if (cpc->reason & CP_UMOUNT) {
-		if (le32_to_cpu(ckpt->cp_pack_total_block_count) +
-			NM_I(sbi)->nat_bits_blocks > BLKS_PER_SEG(sbi)) {
-			clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
-			f2fs_notice(sbi, "Disable nat_bits due to no space");
-		} else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&
-						f2fs_nat_bitmap_enabled(sbi)) {
-			f2fs_enable_nat_bits(sbi);
-			set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
-			f2fs_notice(sbi, "Rebuild and enable nat_bits");
-		}
-	}
-
 	spin_lock_irqsave(&sbi->cp_lock, flags);
 
+	if ((cpc->reason & CP_UMOUNT) &&
+			le32_to_cpu(ckpt->cp_pack_total_block_count) >
+			sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks)
+		disable_nat_bits(sbi, false);
+
 	if (cpc->reason & CP_TRIMMED)
 		__set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
 	else
@@ -1541,8 +1528,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	start_blk = __start_cp_next_addr(sbi);
 
 	/* write nat bits */
-	if ((cpc->reason & CP_UMOUNT) &&
-			is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) {
+	if (enabled_nat_bits(sbi, cpc)) {
 		__u64 cp_ver = cur_cp_version(ckpt);
 		block_t blk;
 
@@ -1867,7 +1853,8 @@ int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)
 	struct cp_control cpc;
 
 	cpc.reason = __get_cp_reason(sbi);
-	if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {
+	if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC ||
+		sbi->umount_lock_holder == current) {
 		int ret;
 
 		f2fs_down_write(&sbi->gc_lock);
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 985690d81a82..9b94810675c1 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1150,6 +1150,7 @@ retry:
 		f2fs_compress_ctx_add_page(cc, page_folio(page));
 
 		if (!PageUptodate(page)) {
+			f2fs_handle_page_eio(sbi, page_folio(page), DATA);
 release_and_retry:
 			f2fs_put_rpages(cc);
 			f2fs_unlock_rpages(cc, i + 1);
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index de4da6d9cd93..54f89f0ee69b 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -319,8 +319,7 @@ static void f2fs_read_end_io(struct bio *bio)
 static void f2fs_write_end_io(struct bio *bio)
 {
 	struct f2fs_sb_info *sbi;
-	struct bio_vec *bvec;
-	struct bvec_iter_all iter_all;
+	struct folio_iter fi;
 
 	iostat_update_and_unbind_ctx(bio);
 	sbi = bio->bi_private;
@@ -328,34 +327,41 @@ static void f2fs_write_end_io(struct bio *bio)
 	if (time_to_inject(sbi, FAULT_WRITE_IO))
 		bio->bi_status = BLK_STS_IOERR;
 
-	bio_for_each_segment_all(bvec, bio, iter_all) {
-		struct page *page = bvec->bv_page;
-		enum count_type type = WB_DATA_TYPE(page, false);
+	bio_for_each_folio_all(fi, bio) {
+		struct folio *folio = fi.folio;
+		enum count_type type;
+
+		if (fscrypt_is_bounce_folio(folio)) {
+			struct folio *io_folio = folio;
 
-		fscrypt_finalize_bounce_page(&page);
+			folio = fscrypt_pagecache_folio(io_folio);
+			fscrypt_free_bounce_page(&io_folio->page);
+		}
 
 #ifdef CONFIG_F2FS_FS_COMPRESSION
-		if (f2fs_is_compressed_page(page)) {
-			f2fs_compress_write_end_io(bio, page);
+		if (f2fs_is_compressed_page(&folio->page)) {
+			f2fs_compress_write_end_io(bio, &folio->page);
 			continue;
 		}
 #endif
 
+		type = WB_DATA_TYPE(&folio->page, false);
+
 		if (unlikely(bio->bi_status)) {
-			mapping_set_error(page->mapping, -EIO);
+			mapping_set_error(folio->mapping, -EIO);
 			if (type == F2FS_WB_CP_DATA)
 				f2fs_stop_checkpoint(sbi, true,
 						STOP_CP_REASON_WRITE_FAIL);
 		}
 
-		f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
-				page_folio(page)->index != nid_of_node(page));
+		f2fs_bug_on(sbi, folio->mapping == NODE_MAPPING(sbi) &&
+				folio->index != nid_of_node(&folio->page));
 
 		dec_page_count(sbi, type);
-		if (f2fs_in_warm_node_list(sbi, page))
-			f2fs_del_fsync_node_entry(sbi, page);
-		clear_page_private_gcing(page);
-		end_page_writeback(page);
+		if (f2fs_in_warm_node_list(sbi, folio))
+			f2fs_del_fsync_node_entry(sbi, &folio->page);
+		clear_page_private_gcing(&folio->page);
+		folio_end_writeback(folio);
 	}
 	if (!get_pages(sbi, F2FS_WB_CP_DATA) &&
 				wq_has_sleeper(&sbi->cp_wait))
@@ -413,6 +419,7 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
 static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio)
 {
 	unsigned int temp_mask = GENMASK(NR_TEMP_TYPE - 1, 0);
+	struct folio *fio_folio = page_folio(fio->page);
 	unsigned int fua_flag, meta_flag, io_flag;
 	blk_opf_t op_flags = 0;
 
@@ -438,6 +445,11 @@ static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio)
 		op_flags |= REQ_META;
 	if (BIT(fio->temp) & fua_flag)
 		op_flags |= REQ_FUA;
+
+	if (fio->type == DATA &&
+	    F2FS_I(fio_folio->mapping->host)->ioprio_hint == F2FS_IOPRIO_WRITE)
+		op_flags |= REQ_PRIO;
+
 	return op_flags;
 }
 
@@ -876,6 +888,7 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
 	struct bio *bio = *fio->bio;
 	struct page *page = fio->encrypted_page ?
 			fio->encrypted_page : fio->page;
+	struct folio *folio = page_folio(fio->page);
 
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
 			__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))
@@ -889,8 +902,8 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
 alloc_new:
 	if (!bio) {
 		bio = __bio_alloc(fio, BIO_MAX_VECS);
-		f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
-				page_folio(fio->page)->index, fio, GFP_NOIO);
+		f2fs_set_bio_crypt_ctx(bio, folio->mapping->host,
+				folio->index, fio, GFP_NOIO);
 
 		add_bio_entry(fio->sbi, bio, page, fio->temp);
 	} else {
@@ -899,8 +912,7 @@ alloc_new:
 	}
 
 	if (fio->io_wbc)
-		wbc_account_cgroup_owner(fio->io_wbc, page_folio(fio->page),
-					 PAGE_SIZE);
+		wbc_account_cgroup_owner(fio->io_wbc, folio, folio_size(folio));
 
 	inc_page_count(fio->sbi, WB_DATA_TYPE(page, false));
 
@@ -1041,8 +1053,6 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
 	bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages),
 			       REQ_OP_READ | op_flag,
 			       for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset);
-	if (!bio)
-		return ERR_PTR(-ENOMEM);
 	bio->bi_iter.bi_sector = sector;
 	f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS);
 	bio->bi_end_io = f2fs_read_end_io;
@@ -1193,18 +1203,17 @@ int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index)
 	return err;
 }
 
-struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
-				     blk_opf_t op_flags, bool for_write,
-				     pgoff_t *next_pgofs)
+struct folio *f2fs_get_read_data_folio(struct inode *inode, pgoff_t index,
+		blk_opf_t op_flags, bool for_write, pgoff_t *next_pgofs)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct dnode_of_data dn;
-	struct page *page;
+	struct folio *folio;
 	int err;
 
-	page = f2fs_grab_cache_page(mapping, index, for_write);
-	if (!page)
-		return ERR_PTR(-ENOMEM);
+	folio = f2fs_grab_cache_folio(mapping, index, for_write);
+	if (IS_ERR(folio))
+		return folio;
 
 	if (f2fs_lookup_read_extent_cache_block(inode, index,
 						&dn.data_blkaddr)) {
@@ -1239,9 +1248,9 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 		goto put_err;
 	}
 got_it:
-	if (PageUptodate(page)) {
-		unlock_page(page);
-		return page;
+	if (folio_test_uptodate(folio)) {
+		folio_unlock(folio);
+		return folio;
 	}
 
 	/*
@@ -1252,48 +1261,51 @@ got_it:
 	 * f2fs_init_inode_metadata.
 	 */
 	if (dn.data_blkaddr == NEW_ADDR) {
-		zero_user_segment(page, 0, PAGE_SIZE);
-		if (!PageUptodate(page))
-			SetPageUptodate(page);
-		unlock_page(page);
-		return page;
+		folio_zero_segment(folio, 0, folio_size(folio));
+		if (!folio_test_uptodate(folio))
+			folio_mark_uptodate(folio);
+		folio_unlock(folio);
+		return folio;
 	}
 
-	err = f2fs_submit_page_read(inode, page_folio(page), dn.data_blkaddr,
+	err = f2fs_submit_page_read(inode, folio, dn.data_blkaddr,
 						op_flags, for_write);
 	if (err)
 		goto put_err;
-	return page;
+	return folio;
 
 put_err:
-	f2fs_put_page(page, 1);
+	f2fs_folio_put(folio, true);
 	return ERR_PTR(err);
 }
 
-struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index,
+struct folio *f2fs_find_data_folio(struct inode *inode, pgoff_t index,
 					pgoff_t *next_pgofs)
 {
 	struct address_space *mapping = inode->i_mapping;
-	struct page *page;
+	struct folio *folio;
 
-	page = find_get_page_flags(mapping, index, FGP_ACCESSED);
-	if (page && PageUptodate(page))
-		return page;
-	f2fs_put_page(page, 0);
+	folio = __filemap_get_folio(mapping, index, FGP_ACCESSED, 0);
+	if (IS_ERR(folio))
+		goto read;
+	if (folio_test_uptodate(folio))
+		return folio;
+	f2fs_folio_put(folio, false);
 
-	page = f2fs_get_read_data_page(inode, index, 0, false, next_pgofs);
-	if (IS_ERR(page))
-		return page;
+read:
+	folio = f2fs_get_read_data_folio(inode, index, 0, false, next_pgofs);
+	if (IS_ERR(folio))
+		return folio;
 
-	if (PageUptodate(page))
-		return page;
+	if (folio_test_uptodate(folio))
+		return folio;
 
-	wait_on_page_locked(page);
-	if (unlikely(!PageUptodate(page))) {
-		f2fs_put_page(page, 0);
+	folio_wait_locked(folio);
+	if (unlikely(!folio_test_uptodate(folio))) {
+		f2fs_folio_put(folio, false);
 		return ERR_PTR(-EIO);
 	}
-	return page;
+	return folio;
 }
 
 /*
@@ -1301,23 +1313,23 @@ struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index,
  * Because, the callers, functions in dir.c and GC, should be able to know
  * whether this page exists or not.
  */
-struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
+struct folio *f2fs_get_lock_data_folio(struct inode *inode, pgoff_t index,
 							bool for_write)
 {
 	struct address_space *mapping = inode->i_mapping;
-	struct page *page;
+	struct folio *folio;
 
-	page = f2fs_get_read_data_page(inode, index, 0, for_write, NULL);
-	if (IS_ERR(page))
-		return page;
+	folio = f2fs_get_read_data_folio(inode, index, 0, for_write, NULL);
+	if (IS_ERR(folio))
+		return folio;
 
 	/* wait for read completion */
-	lock_page(page);
-	if (unlikely(page->mapping != mapping || !PageUptodate(page))) {
-		f2fs_put_page(page, 1);
+	folio_lock(folio);
+	if (unlikely(folio->mapping != mapping || !folio_test_uptodate(folio))) {
+		f2fs_folio_put(folio, true);
 		return ERR_PTR(-EIO);
 	}
-	return page;
+	return folio;
 }
 
 /*
@@ -2178,6 +2190,12 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
 	int i;
 	int ret = 0;
 
+	if (unlikely(f2fs_cp_error(sbi))) {
+		ret = -EIO;
+		from_dnode = false;
+		goto out_put_dnode;
+	}
+
 	f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc));
 
 	last_block_in_file = F2FS_BYTES_TO_BLK(f2fs_readpage_limit(inode) +
@@ -2221,10 +2239,6 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
 	if (ret)
 		goto out;
 
-	if (unlikely(f2fs_cp_error(sbi))) {
-		ret = -EIO;
-		goto out_put_dnode;
-	}
 	f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR);
 
 skip_reading_dnode:
@@ -2500,7 +2514,7 @@ int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
 		return 0;
 
 retry_encrypt:
-	fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page,
+	fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page_folio(page),
 					PAGE_SIZE, 0, gfp_flags);
 	if (IS_ERR(fio->encrypted_page)) {
 		/* flush pending IOs and wait for a while in the ENOMEM case */
@@ -2921,29 +2935,6 @@ redirty_out:
 	return err;
 }
 
-static int f2fs_write_data_page(struct page *page,
-					struct writeback_control *wbc)
-{
-	struct folio *folio = page_folio(page);
-#ifdef CONFIG_F2FS_FS_COMPRESSION
-	struct inode *inode = folio->mapping->host;
-
-	if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
-		goto out;
-
-	if (f2fs_compressed_file(inode)) {
-		if (f2fs_is_compressed_cluster(inode, folio->index)) {
-			folio_redirty_for_writepage(wbc, folio);
-			return AOP_WRITEPAGE_ACTIVATE;
-		}
-	}
-out:
-#endif
-
-	return f2fs_write_single_data_page(folio, NULL, NULL, NULL,
-						wbc, FS_DATA_IO, 0, true);
-}
-
 /*
  * This function was copied from write_cache_pages from mm/page-writeback.c.
  * The major change is making write step of cold data page separately from
@@ -3266,10 +3257,6 @@ static int __f2fs_write_data_pages(struct address_space *mapping,
 	int ret;
 	bool locked = false;
 
-	/* deal with chardevs and other special file */
-	if (!mapping->a_ops->writepage)
-		return 0;
-
 	/* skip writing if there is no dirty page in this inode */
 	if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE)
 		return 0;
@@ -3390,7 +3377,7 @@ static int prepare_write_begin(struct f2fs_sb_info *sbi,
 
 restart:
 	/* check inline_data */
-	ipage = f2fs_get_node_page(sbi, inode->i_ino);
+	ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(ipage)) {
 		err = PTR_ERR(ipage);
 		goto unlock_out;
@@ -3453,7 +3440,7 @@ static int __find_data_block(struct inode *inode, pgoff_t index,
 	struct page *ipage;
 	int err = 0;
 
-	ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+	ipage = f2fs_get_inode_page(F2FS_I_SB(inode), inode->i_ino);
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
@@ -3483,7 +3470,7 @@ static int __reserve_data_block(struct inode *inode, pgoff_t index,
 
 	f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
 
-	ipage = f2fs_get_node_page(sbi, inode->i_ino);
+	ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(ipage)) {
 		err = PTR_ERR(ipage);
 		goto unlock_out;
@@ -4101,7 +4088,6 @@ static void f2fs_swap_deactivate(struct file *file)
 const struct address_space_operations f2fs_dblock_aops = {
 	.read_folio	= f2fs_read_data_folio,
 	.readahead	= f2fs_readahead,
-	.writepage	= f2fs_write_data_page,
 	.writepages	= f2fs_write_data_pages,
 	.write_begin	= f2fs_write_begin,
 	.write_end	= f2fs_write_end,
@@ -4195,7 +4181,13 @@ static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 	map.m_next_pgofs = &next_pgofs;
 	map.m_seg_type = f2fs_rw_hint_to_seg_type(F2FS_I_SB(inode),
 						inode->i_write_hint);
-	if (flags & IOMAP_WRITE)
+
+	/*
+	 * If the blocks being overwritten are already allocated,
+	 * f2fs_map_lock and f2fs_balance_fs are not necessary.
+	 */
+	if ((flags & IOMAP_WRITE) &&
+		!f2fs_overwrite_io(inode, offset, length))
 		map.m_may_create = true;
 
 	err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DIO);
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 468828288a4a..16c2dfb4f595 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -164,6 +164,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
 	si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
 	si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
 	si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
+	si->ndonate_files = sbi->donate_files;
 	si->nquota_files = sbi->nquota_files;
 	si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
 	si->aw_cnt = atomic_read(&sbi->atomic_files);
@@ -501,6 +502,8 @@ static int stat_show(struct seq_file *s, void *v)
 			   si->compr_inode, si->compr_blocks);
 		seq_printf(s, "  - Swapfile Inode: %u\n",
 			   si->swapfile_inode);
+		seq_printf(s, "  - Donate Inode: %u\n",
+			   si->ndonate_files);
 		seq_printf(s, "  - Orphan/Append/Update Inode: %u, %u, %u\n",
 			   si->orphans, si->append, si->update);
 		seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 54dd52de7269..5a63ff0df03b 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -551,7 +551,7 @@ struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
 				goto put_error;
 		}
 	} else {
-		page = f2fs_get_node_page(F2FS_I_SB(dir), inode->i_ino);
+		page = f2fs_get_inode_page(F2FS_I_SB(dir), inode->i_ino);
 		if (IS_ERR(page))
 			return page;
 	}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 1afa7be16e7d..f1576dc6ec67 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -62,6 +62,7 @@ enum {
 	FAULT_BLKADDR_VALIDITY,
 	FAULT_BLKADDR_CONSISTENCE,
 	FAULT_NO_SEGMENT,
+	FAULT_INCONSISTENT_FOOTER,
 	FAULT_MAX,
 };
 
@@ -114,6 +115,13 @@ extern const char *f2fs_fault_name[FAULT_MAX];
 #define	F2FS_MOUNT_GC_MERGE		0x02000000
 #define F2FS_MOUNT_COMPRESS_CACHE	0x04000000
 #define F2FS_MOUNT_AGE_EXTENT_CACHE	0x08000000
+#define F2FS_MOUNT_NAT_BITS		0x10000000
+#define F2FS_MOUNT_INLINECRYPT		0x20000000
+/*
+ * Some f2fs environments expect to be able to pass the "lazytime" option
+ * string rather than using the MS_LAZYTIME flag, so this must remain.
+ */
+#define F2FS_MOUNT_LAZYTIME		0x40000000
 
 #define F2FS_OPTION(sbi)	((sbi)->mount_opt)
 #define clear_opt(sbi, option)	(F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
@@ -830,6 +838,7 @@ struct f2fs_inode_info {
 
 	/* Use below internally in f2fs*/
 	unsigned long flags[BITS_TO_LONGS(FI_MAX)];	/* use to pass per-file flags */
+	unsigned int ioprio_hint;	/* hint for IO priority */
 	struct f2fs_rwsem i_sem;	/* protect fi info */
 	atomic_t dirty_pages;		/* # of dirty pages */
 	f2fs_hash_t chash;		/* hash value of given file name */
@@ -849,6 +858,11 @@ struct f2fs_inode_info {
 #endif
 	struct list_head dirty_list;	/* dirty list for dirs and files */
 	struct list_head gdirty_list;	/* linked in global dirty list */
+
+	/* linked in global inode list for cache donation */
+	struct list_head gdonate_list;
+	pgoff_t donate_start, donate_end; /* inclusive */
+
 	struct task_struct *atomic_write_task;	/* store atomic write task */
 	struct extent_tree *extent_tree[NR_EXTENT_CACHES];
 					/* cached extent_tree entry */
@@ -1273,6 +1287,7 @@ enum inode_type {
 	DIR_INODE,			/* for dirty dir inode */
 	FILE_INODE,			/* for dirty regular/symlink inode */
 	DIRTY_META,			/* for all dirtied inode metadata */
+	DONATE_INODE,			/* for all inode to donate pages */
 	NR_INODE_TYPE,
 };
 
@@ -1628,6 +1643,9 @@ struct f2fs_sb_info {
 	unsigned int warm_data_age_threshold;
 	unsigned int last_age_weight;
 
+	/* control donate caches */
+	unsigned int donate_files;
+
 	/* basic filesystem units */
 	unsigned int log_sectors_per_block;	/* log2 sectors per block */
 	unsigned int log_blocksize;		/* log2 block size */
@@ -1659,6 +1677,7 @@ struct f2fs_sb_info {
 
 	unsigned int nquota_files;		/* # of quota sysfile */
 	struct f2fs_rwsem quota_sem;		/* blocking cp for flags */
+	struct task_struct *umount_lock_holder;	/* s_umount lock holder */
 
 	/* # of pages, see count_type */
 	atomic_t nr_pages[NR_COUNT_TYPE];
@@ -1800,6 +1819,9 @@ struct f2fs_sb_info {
 	u64 committed_atomic_block;
 	u64 revoked_atomic_block;
 
+	/* carve out reserved_blocks from total blocks */
+	bool carve_out;
+
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 	struct kmem_cache *page_array_slab;	/* page array entry */
 	unsigned int page_array_slab_size;	/* default page array slab size */
@@ -2015,7 +2037,7 @@ static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
 	return (struct f2fs_checkpoint *)(sbi->ckpt);
 }
 
-static inline struct f2fs_node *F2FS_NODE(struct page *page)
+static inline struct f2fs_node *F2FS_NODE(const struct page *page)
 {
 	return (struct f2fs_node *)page_address(page);
 }
@@ -2219,6 +2241,36 @@ static inline void f2fs_up_write(struct f2fs_rwsem *sem)
 #endif
 }
 
+static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
+{
+	unsigned long flags;
+	unsigned char *nat_bits;
+
+	/*
+	 * In order to re-enable nat_bits we need to call fsck.f2fs by
+	 * set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
+	 * so let's rely on regular fsck or unclean shutdown.
+	 */
+
+	if (lock)
+		spin_lock_irqsave(&sbi->cp_lock, flags);
+	__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
+	nat_bits = NM_I(sbi)->nat_bits;
+	NM_I(sbi)->nat_bits = NULL;
+	if (lock)
+		spin_unlock_irqrestore(&sbi->cp_lock, flags);
+
+	kvfree(nat_bits);
+}
+
+static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
+					struct cp_control *cpc)
+{
+	bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
+
+	return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
+}
+
 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
 {
 	f2fs_down_read(&sbi->cp_rwsem);
@@ -2765,33 +2817,46 @@ static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
 	return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
 }
 
-static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
-						pgoff_t index, bool for_write)
+static inline struct folio *f2fs_grab_cache_folio(struct address_space *mapping,
+		pgoff_t index, bool for_write)
 {
-	struct page *page;
+	struct folio *folio;
 	unsigned int flags;
 
 	if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
+		fgf_t fgf_flags;
+
 		if (!for_write)
-			page = find_get_page_flags(mapping, index,
-							FGP_LOCK | FGP_ACCESSED);
+			fgf_flags = FGP_LOCK | FGP_ACCESSED;
 		else
-			page = find_lock_page(mapping, index);
-		if (page)
-			return page;
+			fgf_flags = FGP_LOCK;
+		folio = __filemap_get_folio(mapping, index, fgf_flags, 0);
+		if (!IS_ERR(folio))
+			return folio;
 
 		if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC))
-			return NULL;
+			return ERR_PTR(-ENOMEM);
 	}
 
 	if (!for_write)
-		return grab_cache_page(mapping, index);
+		return filemap_grab_folio(mapping, index);
 
 	flags = memalloc_nofs_save();
-	page = grab_cache_page_write_begin(mapping, index);
+	folio = __filemap_get_folio(mapping, index, FGP_WRITEBEGIN,
+			mapping_gfp_mask(mapping));
 	memalloc_nofs_restore(flags);
 
-	return page;
+	return folio;
+}
+
+static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
+						pgoff_t index, bool for_write)
+{
+	struct folio *folio = f2fs_grab_cache_folio(mapping, index, for_write);
+
+	if (IS_ERR(folio))
+		return NULL;
+	return &folio->page;
 }
 
 static inline struct page *f2fs_pagecache_get_page(
@@ -2804,16 +2869,23 @@ static inline struct page *f2fs_pagecache_get_page(
 	return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
 }
 
-static inline void f2fs_put_page(struct page *page, int unlock)
+static inline void f2fs_folio_put(struct folio *folio, bool unlock)
 {
-	if (!page)
+	if (!folio)
 		return;
 
 	if (unlock) {
-		f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
-		unlock_page(page);
+		f2fs_bug_on(F2FS_F_SB(folio), !folio_test_locked(folio));
+		folio_unlock(folio);
 	}
-	put_page(page);
+	folio_put(folio);
+}
+
+static inline void f2fs_put_page(struct page *page, int unlock)
+{
+	if (!page)
+		return;
+	f2fs_folio_put(page_folio(page), unlock);
 }
 
 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
@@ -3624,7 +3696,7 @@ int f2fs_inode_dirtied(struct inode *inode, bool sync);
 void f2fs_inode_synced(struct inode *inode);
 int f2fs_dquot_initialize(struct inode *inode);
 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
-int f2fs_quota_sync(struct super_block *sb, int type);
+int f2fs_do_quota_sync(struct super_block *sb, int type);
 loff_t max_file_blocks(struct inode *inode);
 void f2fs_quota_off_umount(struct super_block *sb);
 void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag);
@@ -3647,7 +3719,8 @@ struct node_info;
 
 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
 bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
-bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
+bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi,
+		const struct folio *folio);
 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
 void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
 void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
@@ -3662,12 +3735,14 @@ int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
 int f2fs_truncate_xattr_node(struct inode *inode);
 int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
 					unsigned int seq_id);
-bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi);
 int f2fs_remove_inode_page(struct inode *inode);
 struct page *f2fs_new_inode_page(struct inode *inode);
 struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
+struct folio *f2fs_get_inode_folio(struct f2fs_sb_info *sbi, pgoff_t ino);
+struct page *f2fs_get_inode_page(struct f2fs_sb_info *sbi, pgoff_t ino);
+struct page *f2fs_get_xnode_page(struct f2fs_sb_info *sbi, pgoff_t xnid);
 struct page *f2fs_get_node_page_ra(struct page *parent, int start);
 int f2fs_move_node_page(struct page *node_page, int gc_type);
 void f2fs_flush_inline_data(struct f2fs_sb_info *sbi);
@@ -3687,7 +3762,6 @@ int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
 int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
 int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
 			unsigned int segno, struct f2fs_summary_block *sum);
-void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi);
 int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
 int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
 void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
@@ -3758,8 +3832,10 @@ int f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
 			struct f2fs_io_info *fio);
 void f2fs_update_device_state(struct f2fs_sb_info *sbi, nid_t ino,
 					block_t blkaddr, unsigned int blkcnt);
-void f2fs_wait_on_page_writeback(struct page *page,
-			enum page_type type, bool ordered, bool locked);
+void f2fs_folio_wait_writeback(struct folio *folio, enum page_type type,
+		bool ordered, bool locked);
+#define f2fs_wait_on_page_writeback(page, type, ordered, locked)	\
+		f2fs_folio_wait_writeback(page_folio(page), type, ordered, locked)
 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
 								block_t len);
@@ -3871,11 +3947,11 @@ int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
 int f2fs_reserve_new_block(struct dnode_of_data *dn);
 int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index);
 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
-struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
-			blk_opf_t op_flags, bool for_write, pgoff_t *next_pgofs);
-struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index,
-							pgoff_t *next_pgofs);
-struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
+struct folio *f2fs_get_read_data_folio(struct inode *inode, pgoff_t index,
+		blk_opf_t op_flags, bool for_write, pgoff_t *next_pgofs);
+struct folio *f2fs_find_data_folio(struct inode *inode, pgoff_t index,
+		pgoff_t *next_pgofs);
+struct folio *f2fs_get_lock_data_folio(struct inode *inode, pgoff_t index,
 			bool for_write);
 struct page *f2fs_get_new_data_page(struct inode *inode,
 			struct page *ipage, pgoff_t index, bool new_i_size);
@@ -3902,6 +3978,22 @@ int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi);
 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi);
 extern const struct iomap_ops f2fs_iomap_ops;
 
+static inline struct page *f2fs_find_data_page(struct inode *inode,
+		pgoff_t index, pgoff_t *next_pgofs)
+{
+	struct folio *folio = f2fs_find_data_folio(inode, index, next_pgofs);
+
+	return &folio->page;
+}
+
+static inline struct page *f2fs_get_lock_data_page(struct inode *inode,
+		pgoff_t index, bool for_write)
+{
+	struct folio *folio = f2fs_get_lock_data_folio(inode, index, for_write);
+
+	return &folio->page;
+}
+
 /*
  * gc.c
  */
@@ -3966,7 +4058,8 @@ struct f2fs_stat_info {
 	unsigned long long allocated_data_blocks;
 	int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
 	int ndirty_data, ndirty_qdata;
-	unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
+	unsigned int ndirty_dirs, ndirty_files, ndirty_all;
+	unsigned int nquota_files, ndonate_files;
 	int nats, dirty_nats, sits, dirty_sits;
 	int free_nids, avail_nids, alloc_nids;
 	int total_count, utilization;
@@ -4231,6 +4324,8 @@ unsigned long f2fs_shrink_count(struct shrinker *shrink,
 			struct shrink_control *sc);
 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
 			struct shrink_control *sc);
+unsigned int f2fs_donate_files(void);
+void f2fs_reclaim_caches(unsigned int reclaim_caches_kb);
 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
 
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index f92a9fba9991..abbcbb5865a3 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -707,31 +707,33 @@ static int truncate_partial_data_page(struct inode *inode, u64 from,
 	loff_t offset = from & (PAGE_SIZE - 1);
 	pgoff_t index = from >> PAGE_SHIFT;
 	struct address_space *mapping = inode->i_mapping;
-	struct page *page;
+	struct folio *folio;
 
 	if (!offset && !cache_only)
 		return 0;
 
 	if (cache_only) {
-		page = find_lock_page(mapping, index);
-		if (page && PageUptodate(page))
+		folio = filemap_lock_folio(mapping, index);
+		if (IS_ERR(folio))
+		       return 0;
+		if (folio_test_uptodate(folio))
 			goto truncate_out;
-		f2fs_put_page(page, 1);
+		f2fs_folio_put(folio, true);
 		return 0;
 	}
 
-	page = f2fs_get_lock_data_page(inode, index, true);
-	if (IS_ERR(page))
-		return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
+	folio = f2fs_get_lock_data_folio(inode, index, true);
+	if (IS_ERR(folio))
+		return PTR_ERR(folio) == -ENOENT ? 0 : PTR_ERR(folio);
 truncate_out:
-	f2fs_wait_on_page_writeback(page, DATA, true, true);
-	zero_user(page, offset, PAGE_SIZE - offset);
+	f2fs_folio_wait_writeback(folio, DATA, true, true);
+	folio_zero_segment(folio, offset, folio_size(folio));
 
 	/* An encrypted inode should have a key and truncate the last page. */
 	f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
 	if (!cache_only)
-		set_page_dirty(page);
-	f2fs_put_page(page, 1);
+		folio_mark_dirty(folio);
+	f2fs_folio_put(folio, true);
 	return 0;
 }
 
@@ -759,7 +761,7 @@ int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
 	if (lock)
 		f2fs_lock_op(sbi);
 
-	ipage = f2fs_get_node_page(sbi, inode->i_ino);
+	ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(ipage)) {
 		err = PTR_ERR(ipage);
 		goto out;
@@ -1834,18 +1836,32 @@ static int f2fs_expand_inode_data(struct inode *inode, loff_t offset,
 
 		map.m_len = sec_blks;
 next_alloc:
+		f2fs_down_write(&sbi->pin_sem);
+
+		if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
+			if (has_not_enough_free_secs(sbi, 0, 0)) {
+				f2fs_up_write(&sbi->pin_sem);
+				err = -ENOSPC;
+				f2fs_warn_ratelimited(sbi,
+					"ino:%lu, start:%lu, end:%lu, need to trigger GC to "
+					"reclaim enough free segment when checkpoint is enabled",
+					inode->i_ino, pg_start, pg_end);
+				goto out_err;
+			}
+		}
+
 		if (has_not_enough_free_secs(sbi, 0, f2fs_sb_has_blkzoned(sbi) ?
 			ZONED_PIN_SEC_REQUIRED_COUNT :
 			GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
 			f2fs_down_write(&sbi->gc_lock);
 			stat_inc_gc_call_count(sbi, FOREGROUND);
 			err = f2fs_gc(sbi, &gc_control);
-			if (err && err != -ENODATA)
+			if (err && err != -ENODATA) {
+				f2fs_up_write(&sbi->pin_sem);
 				goto out_err;
+			}
 		}
 
-		f2fs_down_write(&sbi->pin_sem);
-
 		err = f2fs_allocate_pinning_section(sbi);
 		if (err) {
 			f2fs_up_write(&sbi->pin_sem);
@@ -2448,6 +2464,52 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
 	return ret;
 }
 
+static void f2fs_keep_noreuse_range(struct inode *inode,
+				loff_t offset, loff_t len)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+	u64 max_bytes = F2FS_BLK_TO_BYTES(max_file_blocks(inode));
+	u64 start, end;
+
+	if (!S_ISREG(inode->i_mode))
+		return;
+
+	if (offset >= max_bytes || len > max_bytes ||
+	    (offset + len) > max_bytes)
+		return;
+
+	start = offset >> PAGE_SHIFT;
+	end = DIV_ROUND_UP(offset + len, PAGE_SIZE);
+
+	inode_lock(inode);
+	if (f2fs_is_atomic_file(inode)) {
+		inode_unlock(inode);
+		return;
+	}
+
+	spin_lock(&sbi->inode_lock[DONATE_INODE]);
+	/* let's remove the range, if len = 0 */
+	if (!len) {
+		if (!list_empty(&F2FS_I(inode)->gdonate_list)) {
+			list_del_init(&F2FS_I(inode)->gdonate_list);
+			sbi->donate_files--;
+		}
+	} else {
+		if (list_empty(&F2FS_I(inode)->gdonate_list)) {
+			list_add_tail(&F2FS_I(inode)->gdonate_list,
+					&sbi->inode_list[DONATE_INODE]);
+			sbi->donate_files++;
+		} else {
+			list_move_tail(&F2FS_I(inode)->gdonate_list,
+					&sbi->inode_list[DONATE_INODE]);
+		}
+		F2FS_I(inode)->donate_start = start;
+		F2FS_I(inode)->donate_end = end - 1;
+	}
+	spin_unlock(&sbi->inode_lock[DONATE_INODE]);
+	inode_unlock(inode);
+}
+
 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
 {
 	struct inode *inode = file_inode(filp);
@@ -3446,6 +3508,23 @@ static int f2fs_ioc_get_dev_alias_file(struct file *filp, unsigned long arg)
 			(u32 __user *)arg);
 }
 
+static int f2fs_ioc_io_prio(struct file *filp, unsigned long arg)
+{
+	struct inode *inode = file_inode(filp);
+	__u32 level;
+
+	if (get_user(level, (__u32 __user *)arg))
+		return -EFAULT;
+
+	if (!S_ISREG(inode->i_mode) || level >= F2FS_IOPRIO_MAX)
+		return -EINVAL;
+
+	inode_lock(inode);
+	F2FS_I(inode)->ioprio_hint = level;
+	inode_unlock(inode);
+	return 0;
+}
+
 int f2fs_precache_extents(struct inode *inode)
 {
 	struct f2fs_inode_info *fi = F2FS_I(inode);
@@ -4547,6 +4626,8 @@ static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return f2fs_ioc_compress_file(filp);
 	case F2FS_IOC_GET_DEV_ALIAS_FILE:
 		return f2fs_ioc_get_dev_alias_file(filp, arg);
+	case F2FS_IOC_IO_PRIO:
+		return f2fs_ioc_io_prio(filp, arg);
 	default:
 		return -ENOTTY;
 	}
@@ -5147,12 +5228,16 @@ static int f2fs_file_fadvise(struct file *filp, loff_t offset, loff_t len,
 	}
 
 	err = generic_fadvise(filp, offset, len, advice);
-	if (!err && advice == POSIX_FADV_DONTNEED &&
-		test_opt(F2FS_I_SB(inode), COMPRESS_CACHE) &&
-		f2fs_compressed_file(inode))
-		f2fs_invalidate_compress_pages(F2FS_I_SB(inode), inode->i_ino);
+	if (err)
+		return err;
 
-	return err;
+	if (advice == POSIX_FADV_DONTNEED &&
+	    (test_opt(F2FS_I_SB(inode), COMPRESS_CACHE) &&
+	     f2fs_compressed_file(inode)))
+		f2fs_invalidate_compress_pages(F2FS_I_SB(inode), inode->i_ino);
+	else if (advice == POSIX_FADV_NOREUSE)
+		f2fs_keep_noreuse_range(inode, offset, len);
+	return 0;
 }
 
 #ifdef CONFIG_COMPAT
@@ -5261,6 +5346,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case F2FS_IOC_DECOMPRESS_FILE:
 	case F2FS_IOC_COMPRESS_FILE:
 	case F2FS_IOC_GET_DEV_ALIAS_FILE:
+	case F2FS_IOC_IO_PRIO:
 		break;
 	default:
 		return -ENOIOCTLCMD;
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index faf9fa1c804d..2b8f9239bede 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1449,14 +1449,14 @@ out:
 }
 
 static int move_data_page(struct inode *inode, block_t bidx, int gc_type,
-							unsigned int segno, int off)
+						unsigned int segno, int off)
 {
-	struct page *page;
+	struct folio *folio;
 	int err = 0;
 
-	page = f2fs_get_lock_data_page(inode, bidx, true);
-	if (IS_ERR(page))
-		return PTR_ERR(page);
+	folio = f2fs_get_lock_data_folio(inode, bidx, true);
+	if (IS_ERR(folio))
+		return PTR_ERR(folio);
 
 	if (!check_valid_map(F2FS_I_SB(inode), segno, off)) {
 		err = -ENOENT;
@@ -1468,12 +1468,12 @@ static int move_data_page(struct inode *inode, block_t bidx, int gc_type,
 		goto out;
 
 	if (gc_type == BG_GC) {
-		if (folio_test_writeback(page_folio(page))) {
+		if (folio_test_writeback(folio)) {
 			err = -EAGAIN;
 			goto out;
 		}
-		set_page_dirty(page);
-		set_page_private_gcing(page);
+		folio_mark_dirty(folio);
+		set_page_private_gcing(&folio->page);
 	} else {
 		struct f2fs_io_info fio = {
 			.sbi = F2FS_I_SB(inode),
@@ -1483,37 +1483,37 @@ static int move_data_page(struct inode *inode, block_t bidx, int gc_type,
 			.op = REQ_OP_WRITE,
 			.op_flags = REQ_SYNC,
 			.old_blkaddr = NULL_ADDR,
-			.page = page,
+			.page = &folio->page,
 			.encrypted_page = NULL,
 			.need_lock = LOCK_REQ,
 			.io_type = FS_GC_DATA_IO,
 		};
-		bool is_dirty = PageDirty(page);
+		bool is_dirty = folio_test_dirty(folio);
 
 retry:
-		f2fs_wait_on_page_writeback(page, DATA, true, true);
+		f2fs_folio_wait_writeback(folio, DATA, true, true);
 
-		set_page_dirty(page);
-		if (clear_page_dirty_for_io(page)) {
+		folio_mark_dirty(folio);
+		if (folio_clear_dirty_for_io(folio)) {
 			inode_dec_dirty_pages(inode);
 			f2fs_remove_dirty_inode(inode);
 		}
 
-		set_page_private_gcing(page);
+		set_page_private_gcing(&folio->page);
 
 		err = f2fs_do_write_data_page(&fio);
 		if (err) {
-			clear_page_private_gcing(page);
+			clear_page_private_gcing(&folio->page);
 			if (err == -ENOMEM) {
 				memalloc_retry_wait(GFP_NOFS);
 				goto retry;
 			}
 			if (is_dirty)
-				set_page_dirty(page);
+				folio_mark_dirty(folio);
 		}
 	}
 out:
-	f2fs_put_page(page, 1);
+	f2fs_folio_put(folio, true);
 	return err;
 }
 
@@ -1542,7 +1542,6 @@ next_step:
 	entry = sum;
 
 	for (off = 0; off < usable_blks_in_seg; off++, entry++) {
-		struct page *data_page;
 		struct inode *inode;
 		struct node_info dni; /* dnode info for the data */
 		unsigned int ofs_in_node, nofs;
@@ -1585,6 +1584,7 @@ next_step:
 		ofs_in_node = le16_to_cpu(entry->ofs_in_node);
 
 		if (phase == 3) {
+			struct folio *data_folio;
 			int err;
 
 			inode = f2fs_iget(sb, dni.ino);
@@ -1635,15 +1635,15 @@ next_step:
 				continue;
 			}
 
-			data_page = f2fs_get_read_data_page(inode, start_bidx,
+			data_folio = f2fs_get_read_data_folio(inode, start_bidx,
 							REQ_RAHEAD, true, NULL);
 			f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
-			if (IS_ERR(data_page)) {
+			if (IS_ERR(data_folio)) {
 				iput(inode);
 				continue;
 			}
 
-			f2fs_put_page(data_page, 0);
+			f2fs_folio_put(data_folio, false);
 			add_gc_inode(gc_list, inode);
 			continue;
 		}
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 3e3c35d4c98b..ad92e9008781 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -119,7 +119,7 @@ int f2fs_read_inline_data(struct inode *inode, struct folio *folio)
 {
 	struct page *ipage;
 
-	ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+	ipage = f2fs_get_inode_page(F2FS_I_SB(inode), inode->i_ino);
 	if (IS_ERR(ipage)) {
 		folio_unlock(folio);
 		return PTR_ERR(ipage);
@@ -237,7 +237,7 @@ int f2fs_convert_inline_inode(struct inode *inode)
 
 	f2fs_lock_op(sbi);
 
-	ipage = f2fs_get_node_page(sbi, inode->i_ino);
+	ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(ipage)) {
 		err = PTR_ERR(ipage);
 		goto out;
@@ -265,7 +265,7 @@ int f2fs_write_inline_data(struct inode *inode, struct folio *folio)
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	struct page *ipage;
 
-	ipage = f2fs_get_node_page(sbi, inode->i_ino);
+	ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
@@ -312,7 +312,7 @@ int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
 	if (f2fs_has_inline_data(inode) &&
 			ri && (ri->i_inline & F2FS_INLINE_DATA)) {
 process_inline:
-		ipage = f2fs_get_node_page(sbi, inode->i_ino);
+		ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 		if (IS_ERR(ipage))
 			return PTR_ERR(ipage);
 
@@ -331,7 +331,7 @@ process_inline:
 	}
 
 	if (f2fs_has_inline_data(inode)) {
-		ipage = f2fs_get_node_page(sbi, inode->i_ino);
+		ipage = f2fs_get_inode_page(sbi, inode->i_ino);
 		if (IS_ERR(ipage))
 			return PTR_ERR(ipage);
 		f2fs_truncate_inline_inode(inode, ipage, 0);
@@ -361,7 +361,7 @@ struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
 	struct page *ipage;
 	void *inline_dentry;
 
-	ipage = f2fs_get_node_page(sbi, dir->i_ino);
+	ipage = f2fs_get_inode_page(sbi, dir->i_ino);
 	if (IS_ERR(ipage)) {
 		*res_page = ipage;
 		return NULL;
@@ -609,7 +609,7 @@ int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
 	if (err)
 		goto out;
 
-	ipage = f2fs_get_node_page(sbi, dir->i_ino);
+	ipage = f2fs_get_inode_page(sbi, dir->i_ino);
 	if (IS_ERR(ipage)) {
 		err = PTR_ERR(ipage);
 		goto out_fname;
@@ -644,7 +644,7 @@ int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
 	struct page *page = NULL;
 	int err = 0;
 
-	ipage = f2fs_get_node_page(sbi, dir->i_ino);
+	ipage = f2fs_get_inode_page(sbi, dir->i_ino);
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
@@ -734,7 +734,7 @@ bool f2fs_empty_inline_dir(struct inode *dir)
 	void *inline_dentry;
 	struct f2fs_dentry_ptr d;
 
-	ipage = f2fs_get_node_page(sbi, dir->i_ino);
+	ipage = f2fs_get_inode_page(sbi, dir->i_ino);
 	if (IS_ERR(ipage))
 		return false;
 
@@ -765,7 +765,7 @@ int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
 	if (ctx->pos == d.max)
 		return 0;
 
-	ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+	ipage = f2fs_get_inode_page(F2FS_I_SB(inode), inode->i_ino);
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
@@ -797,7 +797,7 @@ int f2fs_inline_data_fiemap(struct inode *inode,
 	struct page *ipage;
 	int err = 0;
 
-	ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+	ipage = f2fs_get_inode_page(F2FS_I_SB(inode), inode->i_ino);
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 3dd25f64d6f1..83f862578fc8 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -34,10 +34,8 @@ void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
 	if (f2fs_inode_dirtied(inode, sync))
 		return;
 
-	if (f2fs_is_atomic_file(inode)) {
-		set_inode_flag(inode, FI_ATOMIC_DIRTIED);
+	if (f2fs_is_atomic_file(inode))
 		return;
-	}
 
 	mark_inode_dirty_sync(inode);
 }
@@ -410,7 +408,7 @@ static int do_read_inode(struct inode *inode)
 	if (f2fs_check_nid_range(sbi, inode->i_ino))
 		return -EINVAL;
 
-	node_page = f2fs_get_node_page(sbi, inode->i_ino);
+	node_page = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(node_page))
 		return PTR_ERR(node_page);
 
@@ -757,7 +755,7 @@ void f2fs_update_inode_page(struct inode *inode)
 	struct page *node_page;
 	int count = 0;
 retry:
-	node_page = f2fs_get_node_page(sbi, inode->i_ino);
+	node_page = f2fs_get_inode_page(sbi, inode->i_ino);
 	if (IS_ERR(node_page)) {
 		int err = PTR_ERR(node_page);
 
@@ -765,8 +763,12 @@ retry:
 		if (err == -ENOENT)
 			return;
 
+		if (err == -EFSCORRUPTED)
+			goto stop_checkpoint;
+
 		if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
 			goto retry;
+stop_checkpoint:
 		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
 		return;
 	}
@@ -789,6 +791,13 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 		!is_inode_flag_set(inode, FI_DIRTY_INODE))
 		return 0;
 
+	/*
+	 * no need to update inode page, ultimately f2fs_evict_inode() will
+	 * clear dirty status of inode.
+	 */
+	if (f2fs_cp_error(sbi))
+		return -EIO;
+
 	if (!f2fs_is_checkpoint_ready(sbi)) {
 		f2fs_mark_inode_dirty_sync(inode, true);
 		return -ENOSPC;
@@ -804,6 +813,19 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 	return 0;
 }
 
+static void f2fs_remove_donate_inode(struct inode *inode)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+	if (list_empty(&F2FS_I(inode)->gdonate_list))
+		return;
+
+	spin_lock(&sbi->inode_lock[DONATE_INODE]);
+	list_del_init(&F2FS_I(inode)->gdonate_list);
+	sbi->donate_files--;
+	spin_unlock(&sbi->inode_lock[DONATE_INODE]);
+}
+
 /*
  * Called at the last iput() if i_nlink is zero
  */
@@ -838,6 +860,7 @@ void f2fs_evict_inode(struct inode *inode)
 
 	f2fs_bug_on(sbi, get_dirty_pages(inode));
 	f2fs_remove_dirty_inode(inode);
+	f2fs_remove_donate_inode(inode);
 
 	if (!IS_DEVICE_ALIASING(inode))
 		f2fs_destroy_extent_tree(inode);
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index a278c7da8177..8f8b9b843bdf 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -502,6 +502,14 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 		goto out;
 	}
 
+	if (inode->i_nlink == 0) {
+		f2fs_warn(F2FS_I_SB(inode), "%s: inode (ino=%lx) has zero i_nlink",
+			  __func__, inode->i_ino);
+		err = -EFSCORRUPTED;
+		set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
+		goto out_iput;
+	}
+
 	if (IS_ENCRYPTED(dir) &&
 	    (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
 	    !fscrypt_has_permitted_context(dir, inode)) {
@@ -684,23 +692,23 @@ out_free_encrypted_link:
 	return err;
 }
 
-static int f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
-		      struct dentry *dentry, umode_t mode)
+static struct dentry *f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
+				 struct dentry *dentry, umode_t mode)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 	struct inode *inode;
 	int err;
 
 	if (unlikely(f2fs_cp_error(sbi)))
-		return -EIO;
+		return ERR_PTR(-EIO);
 
 	err = f2fs_dquot_initialize(dir);
 	if (err)
-		return err;
+		return ERR_PTR(err);
 
 	inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL);
 	if (IS_ERR(inode))
-		return PTR_ERR(inode);
+		return ERR_CAST(inode);
 
 	inode->i_op = &f2fs_dir_inode_operations;
 	inode->i_fop = &f2fs_dir_operations;
@@ -722,12 +730,12 @@ static int f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 		f2fs_sync_fs(sbi->sb, 1);
 
 	f2fs_balance_fs(sbi, true);
-	return 0;
+	return NULL;
 
 out_fail:
 	clear_inode_flag(inode, FI_INC_LINK);
 	f2fs_handle_failed_inode(inode);
-	return err;
+	return ERR_PTR(err);
 }
 
 static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index f88392fc4ba9..5f15c224bf78 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -310,10 +310,10 @@ static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i,
 							start, nr);
 }
 
-bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page)
+bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, const struct folio *folio)
 {
-	return NODE_MAPPING(sbi) == page->mapping &&
-			IS_DNODE(page) && is_cold_node(page);
+	return NODE_MAPPING(sbi) == folio->mapping &&
+			IS_DNODE(&folio->page) && is_cold_node(&folio->page);
 }
 
 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi)
@@ -778,7 +778,7 @@ int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
 	npage[0] = dn->inode_page;
 
 	if (!npage[0]) {
-		npage[0] = f2fs_get_node_page(sbi, nids[0]);
+		npage[0] = f2fs_get_inode_page(sbi, nids[0]);
 		if (IS_ERR(npage[0]))
 			return PTR_ERR(npage[0]);
 	}
@@ -1130,26 +1130,33 @@ int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
 	unsigned int nofs = 0;
 	struct f2fs_inode *ri;
 	struct dnode_of_data dn;
-	struct page *page;
+	struct folio *folio;
 
 	trace_f2fs_truncate_inode_blocks_enter(inode, from);
 
 	level = get_node_path(inode, from, offset, noffset);
-	if (level < 0) {
+	if (level <= 0) {
+		if (!level) {
+			level = -EFSCORRUPTED;
+			f2fs_err(sbi, "%s: inode ino=%lx has corrupted node block, from:%lu addrs:%u",
+					__func__, inode->i_ino,
+					from, ADDRS_PER_INODE(inode));
+			set_sbi_flag(sbi, SBI_NEED_FSCK);
+		}
 		trace_f2fs_truncate_inode_blocks_exit(inode, level);
 		return level;
 	}
 
-	page = f2fs_get_node_page(sbi, inode->i_ino);
-	if (IS_ERR(page)) {
-		trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
-		return PTR_ERR(page);
+	folio = f2fs_get_inode_folio(sbi, inode->i_ino);
+	if (IS_ERR(folio)) {
+		trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(folio));
+		return PTR_ERR(folio);
 	}
 
-	set_new_dnode(&dn, inode, page, NULL, 0);
-	unlock_page(page);
+	set_new_dnode(&dn, inode, &folio->page, NULL, 0);
+	folio_unlock(folio);
 
-	ri = F2FS_INODE(page);
+	ri = F2FS_INODE(&folio->page);
 	switch (level) {
 	case 0:
 	case 1:
@@ -1178,7 +1185,7 @@ int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
 
 skip_partial:
 	while (cont) {
-		dn.nid = get_nid(page, offset[0], true);
+		dn.nid = get_nid(&folio->page, offset[0], true);
 		switch (offset[0]) {
 		case NODE_DIR1_BLOCK:
 		case NODE_DIR2_BLOCK:
@@ -1199,7 +1206,7 @@ skip_partial:
 			BUG();
 		}
 		if (err == -ENOENT) {
-			set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
+			set_sbi_flag(F2FS_F_SB(folio), SBI_NEED_FSCK);
 			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			f2fs_err_ratelimited(sbi,
 				"truncate node fail, ino:%lu, nid:%u, "
@@ -1210,18 +1217,18 @@ skip_partial:
 		}
 		if (err < 0)
 			goto fail;
-		if (offset[1] == 0 && get_nid(page, offset[0], true)) {
-			lock_page(page);
-			BUG_ON(page->mapping != NODE_MAPPING(sbi));
-			set_nid(page, offset[0], 0, true);
-			unlock_page(page);
+		if (offset[1] == 0 && get_nid(&folio->page, offset[0], true)) {
+			folio_lock(folio);
+			BUG_ON(folio->mapping != NODE_MAPPING(sbi));
+			set_nid(&folio->page, offset[0], 0, true);
+			folio_unlock(folio);
 		}
 		offset[1] = 0;
 		offset[0]++;
 		nofs += err;
 	}
 fail:
-	f2fs_put_page(page, 0);
+	f2fs_folio_put(folio, false);
 	trace_f2fs_truncate_inode_blocks_exit(inode, err);
 	return err > 0 ? 0 : err;
 }
@@ -1238,7 +1245,7 @@ int f2fs_truncate_xattr_node(struct inode *inode)
 	if (!nid)
 		return 0;
 
-	npage = f2fs_get_node_page(sbi, nid);
+	npage = f2fs_get_xnode_page(sbi, nid);
 	if (IS_ERR(npage))
 		return PTR_ERR(npage);
 
@@ -1449,10 +1456,32 @@ void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
 	f2fs_put_page(apage, err ? 1 : 0);
 }
 
-static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
-					struct page *parent, int start)
+static int sanity_check_node_footer(struct f2fs_sb_info *sbi,
+					struct page *page, pgoff_t nid,
+					enum node_type ntype)
 {
-	struct page *page;
+	if (unlikely(nid != nid_of_node(page) ||
+		(ntype == NODE_TYPE_INODE && !IS_INODE(page)) ||
+		(ntype == NODE_TYPE_XATTR &&
+		!f2fs_has_xattr_block(ofs_of_node(page))) ||
+		time_to_inject(sbi, FAULT_INCONSISTENT_FOOTER))) {
+		f2fs_warn(sbi, "inconsistent node block, node_type:%d, nid:%lu, "
+			  "node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
+			  ntype, nid, nid_of_node(page), ino_of_node(page),
+			  ofs_of_node(page), cpver_of_node(page),
+			  next_blkaddr_of_node(page));
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_FOOTER);
+		return -EFSCORRUPTED;
+	}
+	return 0;
+}
+
+static struct folio *__get_node_folio(struct f2fs_sb_info *sbi, pgoff_t nid,
+					struct page *parent, int start,
+					enum node_type ntype)
+{
+	struct folio *folio;
 	int err;
 
 	if (!nid)
@@ -1460,11 +1489,11 @@ static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
 	if (f2fs_check_nid_range(sbi, nid))
 		return ERR_PTR(-EINVAL);
 repeat:
-	page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
-	if (!page)
-		return ERR_PTR(-ENOMEM);
+	folio = f2fs_grab_cache_folio(NODE_MAPPING(sbi), nid, false);
+	if (IS_ERR(folio))
+		return folio;
 
-	err = read_node_page(page, 0);
+	err = read_node_page(&folio->page, 0);
 	if (err < 0) {
 		goto out_put_err;
 	} else if (err == LOCKED_PAGE) {
@@ -1475,54 +1504,72 @@ repeat:
 	if (parent)
 		f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE);
 
-	lock_page(page);
+	folio_lock(folio);
 
-	if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
-		f2fs_put_page(page, 1);
+	if (unlikely(folio->mapping != NODE_MAPPING(sbi))) {
+		f2fs_folio_put(folio, true);
 		goto repeat;
 	}
 
-	if (unlikely(!PageUptodate(page))) {
+	if (unlikely(!folio_test_uptodate(folio))) {
 		err = -EIO;
 		goto out_err;
 	}
 
-	if (!f2fs_inode_chksum_verify(sbi, page)) {
+	if (!f2fs_inode_chksum_verify(sbi, &folio->page)) {
 		err = -EFSBADCRC;
 		goto out_err;
 	}
 page_hit:
-	if (likely(nid == nid_of_node(page)))
-		return page;
-
-	f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
-			  nid, nid_of_node(page), ino_of_node(page),
-			  ofs_of_node(page), cpver_of_node(page),
-			  next_blkaddr_of_node(page));
-	set_sbi_flag(sbi, SBI_NEED_FSCK);
-	f2fs_handle_error(sbi, ERROR_INCONSISTENT_FOOTER);
-	err = -EFSCORRUPTED;
+	err = sanity_check_node_footer(sbi, &folio->page, nid, ntype);
+	if (!err)
+		return folio;
 out_err:
-	ClearPageUptodate(page);
+	folio_clear_uptodate(folio);
 out_put_err:
 	/* ENOENT comes from read_node_page which is not an error. */
 	if (err != -ENOENT)
-		f2fs_handle_page_eio(sbi, page_folio(page), NODE);
-	f2fs_put_page(page, 1);
+		f2fs_handle_page_eio(sbi, folio, NODE);
+	f2fs_folio_put(folio, true);
 	return ERR_PTR(err);
 }
 
 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
 {
-	return __get_node_page(sbi, nid, NULL, 0);
+	struct folio *folio = __get_node_folio(sbi, nid, NULL, 0,
+						NODE_TYPE_REGULAR);
+
+	return &folio->page;
+}
+
+struct folio *f2fs_get_inode_folio(struct f2fs_sb_info *sbi, pgoff_t ino)
+{
+	return __get_node_folio(sbi, ino, NULL, 0, NODE_TYPE_INODE);
+}
+
+struct page *f2fs_get_inode_page(struct f2fs_sb_info *sbi, pgoff_t ino)
+{
+	struct folio *folio = f2fs_get_inode_folio(sbi, ino);
+
+	return &folio->page;
+}
+
+struct page *f2fs_get_xnode_page(struct f2fs_sb_info *sbi, pgoff_t xnid)
+{
+	struct folio *folio = __get_node_folio(sbi, xnid, NULL, 0,
+						NODE_TYPE_XATTR);
+
+	return &folio->page;
 }
 
 struct page *f2fs_get_node_page_ra(struct page *parent, int start)
 {
 	struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
 	nid_t nid = get_nid(parent, start, false);
+	struct folio *folio = __get_node_folio(sbi, nid, parent, start,
+							NODE_TYPE_REGULAR);
 
-	return __get_node_page(sbi, nid, parent, start);
+	return &folio->page;
 }
 
 static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
@@ -1561,11 +1608,11 @@ iput_out:
 	iput(inode);
 }
 
-static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
+static struct folio *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
 {
 	pgoff_t index;
 	struct folio_batch fbatch;
-	struct page *last_page = NULL;
+	struct folio *last_folio = NULL;
 	int nr_folios;
 
 	folio_batch_init(&fbatch);
@@ -1577,45 +1624,45 @@ static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
 		int i;
 
 		for (i = 0; i < nr_folios; i++) {
-			struct page *page = &fbatch.folios[i]->page;
+			struct folio *folio = fbatch.folios[i];
 
 			if (unlikely(f2fs_cp_error(sbi))) {
-				f2fs_put_page(last_page, 0);
+				f2fs_folio_put(last_folio, false);
 				folio_batch_release(&fbatch);
 				return ERR_PTR(-EIO);
 			}
 
-			if (!IS_DNODE(page) || !is_cold_node(page))
+			if (!IS_DNODE(&folio->page) || !is_cold_node(&folio->page))
 				continue;
-			if (ino_of_node(page) != ino)
+			if (ino_of_node(&folio->page) != ino)
 				continue;
 
-			lock_page(page);
+			folio_lock(folio);
 
-			if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
+			if (unlikely(folio->mapping != NODE_MAPPING(sbi))) {
 continue_unlock:
-				unlock_page(page);
+				folio_unlock(folio);
 				continue;
 			}
-			if (ino_of_node(page) != ino)
+			if (ino_of_node(&folio->page) != ino)
 				goto continue_unlock;
 
-			if (!PageDirty(page)) {
+			if (!folio_test_dirty(folio)) {
 				/* someone wrote it for us */
 				goto continue_unlock;
 			}
 
-			if (last_page)
-				f2fs_put_page(last_page, 0);
+			if (last_folio)
+				f2fs_folio_put(last_folio, false);
 
-			get_page(page);
-			last_page = page;
-			unlock_page(page);
+			folio_get(folio);
+			last_folio = folio;
+			folio_unlock(folio);
 		}
 		folio_batch_release(&fbatch);
 		cond_resched();
 	}
-	return last_page;
+	return last_folio;
 }
 
 static int __write_node_page(struct page *page, bool atomic, bool *submitted,
@@ -1694,7 +1741,7 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
 		fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
 
 	/* should add to global list before clearing PAGECACHE status */
-	if (f2fs_in_warm_node_list(sbi, page)) {
+	if (f2fs_in_warm_node_list(sbi, folio)) {
 		seq = f2fs_add_fsync_node_entry(sbi, page);
 		if (seq_id)
 			*seq_id = seq;
@@ -1769,13 +1816,6 @@ release_page:
 	return err;
 }
 
-static int f2fs_write_node_page(struct page *page,
-				struct writeback_control *wbc)
-{
-	return __write_node_page(page, false, NULL, wbc, false,
-						FS_NODE_IO, NULL);
-}
-
 int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
 			struct writeback_control *wbc, bool atomic,
 			unsigned int *seq_id)
@@ -1783,16 +1823,16 @@ int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
 	pgoff_t index;
 	struct folio_batch fbatch;
 	int ret = 0;
-	struct page *last_page = NULL;
+	struct folio *last_folio = NULL;
 	bool marked = false;
 	nid_t ino = inode->i_ino;
 	int nr_folios;
 	int nwritten = 0;
 
 	if (atomic) {
-		last_page = last_fsync_dnode(sbi, ino);
-		if (IS_ERR_OR_NULL(last_page))
-			return PTR_ERR_OR_ZERO(last_page);
+		last_folio = last_fsync_dnode(sbi, ino);
+		if (IS_ERR_OR_NULL(last_folio))
+			return PTR_ERR_OR_ZERO(last_folio);
 	}
 retry:
 	folio_batch_init(&fbatch);
@@ -1804,73 +1844,73 @@ retry:
 		int i;
 
 		for (i = 0; i < nr_folios; i++) {
-			struct page *page = &fbatch.folios[i]->page;
+			struct folio *folio = fbatch.folios[i];
 			bool submitted = false;
 
 			if (unlikely(f2fs_cp_error(sbi))) {
-				f2fs_put_page(last_page, 0);
+				f2fs_folio_put(last_folio, false);
 				folio_batch_release(&fbatch);
 				ret = -EIO;
 				goto out;
 			}
 
-			if (!IS_DNODE(page) || !is_cold_node(page))
+			if (!IS_DNODE(&folio->page) || !is_cold_node(&folio->page))
 				continue;
-			if (ino_of_node(page) != ino)
+			if (ino_of_node(&folio->page) != ino)
 				continue;
 
-			lock_page(page);
+			folio_lock(folio);
 
-			if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
+			if (unlikely(folio->mapping != NODE_MAPPING(sbi))) {
 continue_unlock:
-				unlock_page(page);
+				folio_unlock(folio);
 				continue;
 			}
-			if (ino_of_node(page) != ino)
+			if (ino_of_node(&folio->page) != ino)
 				goto continue_unlock;
 
-			if (!PageDirty(page) && page != last_page) {
+			if (!folio_test_dirty(folio) && folio != last_folio) {
 				/* someone wrote it for us */
 				goto continue_unlock;
 			}
 
-			f2fs_wait_on_page_writeback(page, NODE, true, true);
+			f2fs_folio_wait_writeback(folio, NODE, true, true);
 
-			set_fsync_mark(page, 0);
-			set_dentry_mark(page, 0);
+			set_fsync_mark(&folio->page, 0);
+			set_dentry_mark(&folio->page, 0);
 
-			if (!atomic || page == last_page) {
-				set_fsync_mark(page, 1);
+			if (!atomic || folio == last_folio) {
+				set_fsync_mark(&folio->page, 1);
 				percpu_counter_inc(&sbi->rf_node_block_count);
-				if (IS_INODE(page)) {
+				if (IS_INODE(&folio->page)) {
 					if (is_inode_flag_set(inode,
 								FI_DIRTY_INODE))
-						f2fs_update_inode(inode, page);
-					set_dentry_mark(page,
+						f2fs_update_inode(inode, &folio->page);
+					set_dentry_mark(&folio->page,
 						f2fs_need_dentry_mark(sbi, ino));
 				}
 				/* may be written by other thread */
-				if (!PageDirty(page))
-					set_page_dirty(page);
+				if (!folio_test_dirty(folio))
+					folio_mark_dirty(folio);
 			}
 
-			if (!clear_page_dirty_for_io(page))
+			if (!folio_clear_dirty_for_io(folio))
 				goto continue_unlock;
 
-			ret = __write_node_page(page, atomic &&
-						page == last_page,
+			ret = __write_node_page(&folio->page, atomic &&
+						folio == last_folio,
 						&submitted, wbc, true,
 						FS_NODE_IO, seq_id);
 			if (ret) {
-				unlock_page(page);
-				f2fs_put_page(last_page, 0);
+				folio_unlock(folio);
+				f2fs_folio_put(last_folio, false);
 				break;
 			} else if (submitted) {
 				nwritten++;
 			}
 
-			if (page == last_page) {
-				f2fs_put_page(page, 0);
+			if (folio == last_folio) {
+				f2fs_folio_put(folio, false);
 				marked = true;
 				break;
 			}
@@ -1883,11 +1923,11 @@ continue_unlock:
 	}
 	if (!ret && atomic && !marked) {
 		f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx",
-			   ino, page_folio(last_page)->index);
-		lock_page(last_page);
-		f2fs_wait_on_page_writeback(last_page, NODE, true, true);
-		set_page_dirty(last_page);
-		unlock_page(last_page);
+			   ino, last_folio->index);
+		folio_lock(last_folio);
+		f2fs_folio_wait_writeback(last_folio, NODE, true, true);
+		folio_mark_dirty(last_folio);
+		folio_unlock(last_folio);
 		goto retry;
 	}
 out:
@@ -1920,18 +1960,18 @@ static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data)
 	return 1;
 }
 
-static bool flush_dirty_inode(struct page *page)
+static bool flush_dirty_inode(struct folio *folio)
 {
-	struct f2fs_sb_info *sbi = F2FS_P_SB(page);
+	struct f2fs_sb_info *sbi = F2FS_F_SB(folio);
 	struct inode *inode;
-	nid_t ino = ino_of_node(page);
+	nid_t ino = ino_of_node(&folio->page);
 
 	inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL);
 	if (!inode)
 		return false;
 
-	f2fs_update_inode(inode, page);
-	unlock_page(page);
+	f2fs_update_inode(inode, &folio->page);
+	folio_unlock(folio);
 
 	iput(inode);
 	return true;
@@ -1951,32 +1991,27 @@ void f2fs_flush_inline_data(struct f2fs_sb_info *sbi)
 		int i;
 
 		for (i = 0; i < nr_folios; i++) {
-			struct page *page = &fbatch.folios[i]->page;
+			struct folio *folio = fbatch.folios[i];
 
-			if (!IS_INODE(page))
+			if (!IS_INODE(&folio->page))
 				continue;
 
-			lock_page(page);
-
-			if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
-continue_unlock:
-				unlock_page(page);
-				continue;
-			}
+			folio_lock(folio);
 
-			if (!PageDirty(page)) {
-				/* someone wrote it for us */
-				goto continue_unlock;
-			}
+			if (unlikely(folio->mapping != NODE_MAPPING(sbi)))
+				goto unlock;
+			if (!folio_test_dirty(folio))
+				goto unlock;
 
 			/* flush inline_data, if it's async context. */
-			if (page_private_inline(page)) {
-				clear_page_private_inline(page);
-				unlock_page(page);
-				flush_inline_data(sbi, ino_of_node(page));
+			if (page_private_inline(&folio->page)) {
+				clear_page_private_inline(&folio->page);
+				folio_unlock(folio);
+				flush_inline_data(sbi, ino_of_node(&folio->page));
 				continue;
 			}
-			unlock_page(page);
+unlock:
+			folio_unlock(folio);
 		}
 		folio_batch_release(&fbatch);
 		cond_resched();
@@ -2005,7 +2040,7 @@ next_step:
 		int i;
 
 		for (i = 0; i < nr_folios; i++) {
-			struct page *page = &fbatch.folios[i]->page;
+			struct folio *folio = fbatch.folios[i];
 			bool submitted = false;
 
 			/* give a priority to WB_SYNC threads */
@@ -2021,27 +2056,27 @@ next_step:
 			 * 1. dentry dnodes
 			 * 2. file dnodes
 			 */
-			if (step == 0 && IS_DNODE(page))
+			if (step == 0 && IS_DNODE(&folio->page))
 				continue;
-			if (step == 1 && (!IS_DNODE(page) ||
-						is_cold_node(page)))
+			if (step == 1 && (!IS_DNODE(&folio->page) ||
+						is_cold_node(&folio->page)))
 				continue;
-			if (step == 2 && (!IS_DNODE(page) ||
-						!is_cold_node(page)))
+			if (step == 2 && (!IS_DNODE(&folio->page) ||
+						!is_cold_node(&folio->page)))
 				continue;
 lock_node:
 			if (wbc->sync_mode == WB_SYNC_ALL)
-				lock_page(page);
-			else if (!trylock_page(page))
+				folio_lock(folio);
+			else if (!folio_trylock(folio))
 				continue;
 
-			if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
+			if (unlikely(folio->mapping != NODE_MAPPING(sbi))) {
 continue_unlock:
-				unlock_page(page);
+				folio_unlock(folio);
 				continue;
 			}
 
-			if (!PageDirty(page)) {
+			if (!folio_test_dirty(folio)) {
 				/* someone wrote it for us */
 				goto continue_unlock;
 			}
@@ -2051,29 +2086,29 @@ continue_unlock:
 				goto write_node;
 
 			/* flush inline_data */
-			if (page_private_inline(page)) {
-				clear_page_private_inline(page);
-				unlock_page(page);
-				flush_inline_data(sbi, ino_of_node(page));
+			if (page_private_inline(&folio->page)) {
+				clear_page_private_inline(&folio->page);
+				folio_unlock(folio);
+				flush_inline_data(sbi, ino_of_node(&folio->page));
 				goto lock_node;
 			}
 
 			/* flush dirty inode */
-			if (IS_INODE(page) && flush_dirty_inode(page))
+			if (IS_INODE(&folio->page) && flush_dirty_inode(folio))
 				goto lock_node;
 write_node:
-			f2fs_wait_on_page_writeback(page, NODE, true, true);
+			f2fs_folio_wait_writeback(folio, NODE, true, true);
 
-			if (!clear_page_dirty_for_io(page))
+			if (!folio_clear_dirty_for_io(folio))
 				goto continue_unlock;
 
-			set_fsync_mark(page, 0);
-			set_dentry_mark(page, 0);
+			set_fsync_mark(&folio->page, 0);
+			set_dentry_mark(&folio->page, 0);
 
-			ret = __write_node_page(page, false, &submitted,
+			ret = __write_node_page(&folio->page, false, &submitted,
 						wbc, do_balance, io_type, NULL);
 			if (ret)
-				unlock_page(page);
+				folio_unlock(folio);
 			else if (submitted)
 				nwritten++;
 
@@ -2207,7 +2242,6 @@ static bool f2fs_dirty_node_folio(struct address_space *mapping,
  * Structure of the f2fs node operations
  */
 const struct address_space_operations f2fs_node_aops = {
-	.writepage	= f2fs_write_node_page,
 	.writepages	= f2fs_write_node_pages,
 	.dirty_folio	= f2fs_dirty_node_folio,
 	.invalidate_folio = f2fs_invalidate_folio,
@@ -2269,24 +2303,6 @@ static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i,
 	}
 }
 
-bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi)
-{
-	struct f2fs_nm_info *nm_i = NM_I(sbi);
-	unsigned int i;
-	bool ret = true;
-
-	f2fs_down_read(&nm_i->nat_tree_lock);
-	for (i = 0; i < nm_i->nat_blocks; i++) {
-		if (!test_bit_le(i, nm_i->nat_block_bitmap)) {
-			ret = false;
-			break;
-		}
-	}
-	f2fs_up_read(&nm_i->nat_tree_lock);
-
-	return ret;
-}
-
 static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
 							bool set, bool build)
 {
@@ -2717,7 +2733,7 @@ int f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
 	struct page *ipage;
 	struct f2fs_inode *ri;
 
-	ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+	ipage = f2fs_get_inode_page(F2FS_I_SB(inode), inode->i_ino);
 	if (IS_ERR(ipage))
 		return PTR_ERR(ipage);
 
@@ -2965,23 +2981,7 @@ add_out:
 	list_add_tail(&nes->set_list, head);
 }
 
-static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs,
-							unsigned int valid)
-{
-	if (valid == 0) {
-		__set_bit_le(nat_ofs, nm_i->empty_nat_bits);
-		__clear_bit_le(nat_ofs, nm_i->full_nat_bits);
-		return;
-	}
-
-	__clear_bit_le(nat_ofs, nm_i->empty_nat_bits);
-	if (valid == NAT_ENTRY_PER_BLOCK)
-		__set_bit_le(nat_ofs, nm_i->full_nat_bits);
-	else
-		__clear_bit_le(nat_ofs, nm_i->full_nat_bits);
-}
-
-static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
+static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
 						struct page *page)
 {
 	struct f2fs_nm_info *nm_i = NM_I(sbi);
@@ -2990,7 +2990,7 @@ static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
 	int valid = 0;
 	int i = 0;
 
-	if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
+	if (!enabled_nat_bits(sbi, NULL))
 		return;
 
 	if (nat_index == 0) {
@@ -3001,36 +3001,17 @@ static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
 		if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR)
 			valid++;
 	}
-
-	__update_nat_bits(nm_i, nat_index, valid);
-}
-
-void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi)
-{
-	struct f2fs_nm_info *nm_i = NM_I(sbi);
-	unsigned int nat_ofs;
-
-	f2fs_down_read(&nm_i->nat_tree_lock);
-
-	for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) {
-		unsigned int valid = 0, nid_ofs = 0;
-
-		/* handle nid zero due to it should never be used */
-		if (unlikely(nat_ofs == 0)) {
-			valid = 1;
-			nid_ofs = 1;
-		}
-
-		for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) {
-			if (!test_bit_le(nid_ofs,
-					nm_i->free_nid_bitmap[nat_ofs]))
-				valid++;
-		}
-
-		__update_nat_bits(nm_i, nat_ofs, valid);
+	if (valid == 0) {
+		__set_bit_le(nat_index, nm_i->empty_nat_bits);
+		__clear_bit_le(nat_index, nm_i->full_nat_bits);
+		return;
 	}
 
-	f2fs_up_read(&nm_i->nat_tree_lock);
+	__clear_bit_le(nat_index, nm_i->empty_nat_bits);
+	if (valid == NAT_ENTRY_PER_BLOCK)
+		__set_bit_le(nat_index, nm_i->full_nat_bits);
+	else
+		__clear_bit_le(nat_index, nm_i->full_nat_bits);
 }
 
 static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
@@ -3049,7 +3030,7 @@ static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
 	 * #1, flush nat entries to journal in current hot data summary block.
 	 * #2, flush nat entries to nat page.
 	 */
-	if ((cpc->reason & CP_UMOUNT) ||
+	if (enabled_nat_bits(sbi, cpc) ||
 		!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
 		to_journal = false;
 
@@ -3096,7 +3077,7 @@ static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
 	if (to_journal) {
 		up_write(&curseg->journal_rwsem);
 	} else {
-		update_nat_bits(sbi, start_nid, page);
+		__update_nat_bits(sbi, start_nid, page);
 		f2fs_put_page(page, 1);
 	}
 
@@ -3127,7 +3108,7 @@ int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	 * during unmount, let's flush nat_bits before checking
 	 * nat_cnt[DIRTY_NAT].
 	 */
-	if (cpc->reason & CP_UMOUNT) {
+	if (enabled_nat_bits(sbi, cpc)) {
 		f2fs_down_write(&nm_i->nat_tree_lock);
 		remove_nats_in_journal(sbi);
 		f2fs_up_write(&nm_i->nat_tree_lock);
@@ -3143,7 +3124,7 @@ int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	 * entries, remove all entries from journal and merge them
 	 * into nat entry set.
 	 */
-	if (cpc->reason & CP_UMOUNT ||
+	if (enabled_nat_bits(sbi, cpc) ||
 		!__has_cursum_space(journal,
 			nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL))
 		remove_nats_in_journal(sbi);
@@ -3180,18 +3161,15 @@ static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
 	__u64 cp_ver = cur_cp_version(ckpt);
 	block_t nat_bits_addr;
 
+	if (!enabled_nat_bits(sbi, NULL))
+		return 0;
+
 	nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
 	nm_i->nat_bits = f2fs_kvzalloc(sbi,
 			F2FS_BLK_TO_BYTES(nm_i->nat_bits_blocks), GFP_KERNEL);
 	if (!nm_i->nat_bits)
 		return -ENOMEM;
 
-	nm_i->full_nat_bits = nm_i->nat_bits + 8;
-	nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
-
-	if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
-		return 0;
-
 	nat_bits_addr = __start_cp_addr(sbi) + BLKS_PER_SEG(sbi) -
 						nm_i->nat_bits_blocks;
 	for (i = 0; i < nm_i->nat_bits_blocks; i++) {
@@ -3208,12 +3186,13 @@ static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
 
 	cp_ver |= (cur_cp_crc(ckpt) << 32);
 	if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) {
-		clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
-		f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)",
-			cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits));
+		disable_nat_bits(sbi, true);
 		return 0;
 	}
 
+	nm_i->full_nat_bits = nm_i->nat_bits + 8;
+	nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
+
 	f2fs_notice(sbi, "Found nat_bits in checkpoint");
 	return 0;
 }
@@ -3224,7 +3203,7 @@ static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi)
 	unsigned int i = 0;
 	nid_t nid, last_nid;
 
-	if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
+	if (!enabled_nat_bits(sbi, NULL))
 		return;
 
 	for (i = 0; i < nm_i->nat_blocks; i++) {
@@ -3296,6 +3275,9 @@ static int init_node_manager(struct f2fs_sb_info *sbi)
 	if (!nm_i->nat_bitmap)
 		return -ENOMEM;
 
+	if (!test_opt(sbi, NAT_BITS))
+		disable_nat_bits(sbi, true);
+
 	err = __get_nat_bitmaps(sbi);
 	if (err)
 		return err;
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index 6aea13024ac1..103a437e6425 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -52,6 +52,13 @@ enum {
 	IS_PREALLOC,		/* nat entry is preallocated */
 };
 
+/* For node type in __get_node_folio() */
+enum node_type {
+	NODE_TYPE_REGULAR,
+	NODE_TYPE_INODE,
+	NODE_TYPE_XATTR,
+};
+
 /*
  * For node information
  */
@@ -248,7 +255,7 @@ static inline nid_t nid_of_node(struct page *node_page)
 	return le32_to_cpu(rn->footer.nid);
 }
 
-static inline unsigned int ofs_of_node(struct page *node_page)
+static inline unsigned int ofs_of_node(const struct page *node_page)
 {
 	struct f2fs_node *rn = F2FS_NODE(node_page);
 	unsigned flag = le32_to_cpu(rn->footer.flag);
@@ -342,7 +349,7 @@ static inline bool is_recoverable_dnode(struct page *page)
  *                 `- indirect node ((6 + 2N) + (N - 1)(N + 1))
  *                       `- direct node
  */
-static inline bool IS_DNODE(struct page *node_page)
+static inline bool IS_DNODE(const struct page *node_page)
 {
 	unsigned int ofs = ofs_of_node(node_page);
 
@@ -389,7 +396,7 @@ static inline nid_t get_nid(struct page *p, int off, bool i)
  *  - Mark cold data pages in page cache
  */
 
-static inline int is_node(struct page *page, int type)
+static inline int is_node(const struct page *page, int type)
 {
 	struct f2fs_node *rn = F2FS_NODE(page);
 	return le32_to_cpu(rn->footer.flag) & BIT(type);
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index c282e8a0a2ec..396ef71f41e3 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2096,7 +2096,9 @@ static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc,
 		return false;
 
 	if (!force) {
-		if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks ||
+		if (!f2fs_realtime_discard_enable(sbi) ||
+			(!se->valid_blocks &&
+				!IS_CURSEG(sbi, cpc->trim_start)) ||
 			SM_I(sbi)->dcc_info->nr_discards >=
 				SM_I(sbi)->dcc_info->max_discards)
 			return false;
@@ -2320,10 +2322,9 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
 	dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
 	dcc->max_ordered_discard = DEFAULT_MAX_ORDERED_DISCARD_GRANULARITY;
 	dcc->discard_io_aware = DPOLICY_IO_AWARE_ENABLE;
-	if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
+	if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT ||
+		F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
 		dcc->discard_granularity = BLKS_PER_SEG(sbi);
-	else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
-		dcc->discard_granularity = BLKS_PER_SEC(sbi);
 
 	INIT_LIST_HEAD(&dcc->entry_list);
 	for (i = 0; i < MAX_PLIST_NUM; i++)
@@ -2806,7 +2807,7 @@ find_other_zone:
 							MAIN_SECS(sbi));
 		if (secno >= MAIN_SECS(sbi)) {
 			ret = -ENOSPC;
-			f2fs_bug_on(sbi, 1);
+			f2fs_bug_on(sbi, !pinning);
 			goto out_unlock;
 		}
 	}
@@ -2848,7 +2849,7 @@ got_it:
 out_unlock:
 	spin_unlock(&free_i->segmap_lock);
 
-	if (ret == -ENOSPC)
+	if (ret == -ENOSPC && !pinning)
 		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_NO_SEGMENT);
 	return ret;
 }
@@ -2921,6 +2922,13 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
 	return curseg->segno;
 }
 
+static void reset_curseg_fields(struct curseg_info *curseg)
+{
+	curseg->inited = false;
+	curseg->segno = NULL_SEGNO;
+	curseg->next_segno = 0;
+}
+
 /*
  * Allocate a current working segment.
  * This function always allocates a free segment in LFS manner.
@@ -2939,7 +2947,7 @@ static int new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
 	ret = get_new_segment(sbi, &segno, new_sec, pinning);
 	if (ret) {
 		if (ret == -ENOSPC)
-			curseg->segno = NULL_SEGNO;
+			reset_curseg_fields(curseg);
 		return ret;
 	}
 
@@ -3710,13 +3718,6 @@ static void f2fs_randomize_chunk(struct f2fs_sb_info *sbi,
 		get_random_u32_inclusive(1, sbi->max_fragment_hole);
 }
 
-static void reset_curseg_fields(struct curseg_info *curseg)
-{
-	curseg->inited = false;
-	curseg->segno = NULL_SEGNO;
-	curseg->next_segno = 0;
-}
-
 int f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
 		block_t old_blkaddr, block_t *new_blkaddr,
 		struct f2fs_summary *sum, int type,
@@ -3902,6 +3903,7 @@ static int log_type_to_seg_type(enum log_type type)
 
 static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
 {
+	struct folio *folio = page_folio(fio->page);
 	enum log_type type = __get_segment_type(fio);
 	int seg_type = log_type_to_seg_type(type);
 	bool keep_order = (f2fs_lfs_mode(fio->sbi) &&
@@ -3912,10 +3914,10 @@ static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
 
 	if (f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
 			&fio->new_blkaddr, sum, type, fio)) {
-		if (fscrypt_inode_uses_fs_layer_crypto(fio->page->mapping->host))
+		if (fscrypt_inode_uses_fs_layer_crypto(folio->mapping->host))
 			fscrypt_finalize_bounce_page(&fio->encrypted_page);
-		end_page_writeback(fio->page);
-		if (f2fs_in_warm_node_list(fio->sbi, fio->page))
+		folio_end_writeback(folio);
+		if (f2fs_in_warm_node_list(fio->sbi, folio))
 			f2fs_del_fsync_node_entry(fio->sbi, fio->page);
 		goto out;
 	}
@@ -4154,22 +4156,21 @@ void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
 	f2fs_update_data_blkaddr(dn, new_addr);
 }
 
-void f2fs_wait_on_page_writeback(struct page *page,
-				enum page_type type, bool ordered, bool locked)
+void f2fs_folio_wait_writeback(struct folio *folio, enum page_type type,
+		bool ordered, bool locked)
 {
-	if (folio_test_writeback(page_folio(page))) {
-		struct f2fs_sb_info *sbi = F2FS_P_SB(page);
+	if (folio_test_writeback(folio)) {
+		struct f2fs_sb_info *sbi = F2FS_F_SB(folio);
 
 		/* submit cached LFS IO */
-		f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type);
+		f2fs_submit_merged_write_cond(sbi, NULL, &folio->page, 0, type);
 		/* submit cached IPU IO */
-		f2fs_submit_merged_ipu_write(sbi, NULL, page);
+		f2fs_submit_merged_ipu_write(sbi, NULL, &folio->page);
 		if (ordered) {
-			wait_on_page_writeback(page);
-			f2fs_bug_on(sbi, locked &&
-				folio_test_writeback(page_folio(page)));
+			folio_wait_writeback(folio);
+			f2fs_bug_on(sbi, locked && folio_test_writeback(folio));
 		} else {
-			wait_for_stable_page(page);
+			folio_wait_stable(folio);
 		}
 	}
 }
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 943be4f1d6d2..0465dc00b349 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -559,13 +559,16 @@ static inline bool has_curseg_enough_space(struct f2fs_sb_info *sbi,
 			unsigned int node_blocks, unsigned int data_blocks,
 			unsigned int dent_blocks)
 {
-
 	unsigned int segno, left_blocks, blocks;
 	int i;
 
 	/* check current data/node sections in the worst case. */
 	for (i = CURSEG_HOT_DATA; i < NR_PERSISTENT_LOG; i++) {
 		segno = CURSEG_I(sbi, i)->segno;
+
+		if (unlikely(segno == NULL_SEGNO))
+			return false;
+
 		left_blocks = CAP_BLKS_PER_SEC(sbi) -
 				get_ckpt_valid_blocks(sbi, segno, true);
 
@@ -576,6 +579,10 @@ static inline bool has_curseg_enough_space(struct f2fs_sb_info *sbi,
 
 	/* check current data section for dentry blocks. */
 	segno = CURSEG_I(sbi, CURSEG_HOT_DATA)->segno;
+
+	if (unlikely(segno == NULL_SEGNO))
+		return false;
+
 	left_blocks = CAP_BLKS_PER_SEC(sbi) -
 			get_ckpt_valid_blocks(sbi, segno, true);
 	if (dent_blocks > left_blocks)
diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c
index 83d6fb97dcae..9c8d3aee89af 100644
--- a/fs/f2fs/shrinker.c
+++ b/fs/f2fs/shrinker.c
@@ -73,7 +73,7 @@ unsigned long f2fs_shrink_count(struct shrinker *shrink,
 		mutex_unlock(&sbi->umount_mutex);
 	}
 	spin_unlock(&f2fs_list_lock);
-	return count;
+	return count ?: SHRINK_EMPTY;
 }
 
 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
@@ -130,6 +130,96 @@ unsigned long f2fs_shrink_scan(struct shrinker *shrink,
 	return freed;
 }
 
+unsigned int f2fs_donate_files(void)
+{
+	struct f2fs_sb_info *sbi;
+	struct list_head *p;
+	unsigned int donate_files = 0;
+
+	spin_lock(&f2fs_list_lock);
+	p = f2fs_list.next;
+	while (p != &f2fs_list) {
+		sbi = list_entry(p, struct f2fs_sb_info, s_list);
+
+		/* stop f2fs_put_super */
+		if (!mutex_trylock(&sbi->umount_mutex)) {
+			p = p->next;
+			continue;
+		}
+		spin_unlock(&f2fs_list_lock);
+
+		donate_files += sbi->donate_files;
+
+		spin_lock(&f2fs_list_lock);
+		p = p->next;
+		mutex_unlock(&sbi->umount_mutex);
+	}
+	spin_unlock(&f2fs_list_lock);
+
+	return donate_files;
+}
+
+static unsigned int do_reclaim_caches(struct f2fs_sb_info *sbi,
+				unsigned int reclaim_caches_kb)
+{
+	struct inode *inode;
+	struct f2fs_inode_info *fi;
+	unsigned int nfiles = sbi->donate_files;
+	pgoff_t npages = reclaim_caches_kb >> (PAGE_SHIFT - 10);
+
+	while (npages && nfiles--) {
+		pgoff_t len;
+
+		spin_lock(&sbi->inode_lock[DONATE_INODE]);
+		if (list_empty(&sbi->inode_list[DONATE_INODE])) {
+			spin_unlock(&sbi->inode_lock[DONATE_INODE]);
+			break;
+		}
+		fi = list_first_entry(&sbi->inode_list[DONATE_INODE],
+					struct f2fs_inode_info, gdonate_list);
+		list_move_tail(&fi->gdonate_list, &sbi->inode_list[DONATE_INODE]);
+		inode = igrab(&fi->vfs_inode);
+		spin_unlock(&sbi->inode_lock[DONATE_INODE]);
+
+		if (!inode)
+			continue;
+
+		len = fi->donate_end - fi->donate_start + 1;
+		npages = npages < len ? 0 : npages - len;
+		invalidate_inode_pages2_range(inode->i_mapping,
+					fi->donate_start, fi->donate_end);
+		iput(inode);
+		cond_resched();
+	}
+	return npages << (PAGE_SHIFT - 10);
+}
+
+void f2fs_reclaim_caches(unsigned int reclaim_caches_kb)
+{
+	struct f2fs_sb_info *sbi;
+	struct list_head *p;
+
+	spin_lock(&f2fs_list_lock);
+	p = f2fs_list.next;
+	while (p != &f2fs_list && reclaim_caches_kb) {
+		sbi = list_entry(p, struct f2fs_sb_info, s_list);
+
+		/* stop f2fs_put_super */
+		if (!mutex_trylock(&sbi->umount_mutex)) {
+			p = p->next;
+			continue;
+		}
+		spin_unlock(&f2fs_list_lock);
+
+		reclaim_caches_kb = do_reclaim_caches(sbi, reclaim_caches_kb);
+
+		spin_lock(&f2fs_list_lock);
+		p = p->next;
+		mutex_unlock(&sbi->umount_mutex);
+	}
+	spin_unlock(&f2fs_list_lock);
+}
+
 void f2fs_join_shrinker(struct f2fs_sb_info *sbi)
 {
 	spin_lock(&f2fs_list_lock);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 19b67828ae32..f087b2b71c89 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -63,6 +63,7 @@ const char *f2fs_fault_name[FAULT_MAX] = {
 	[FAULT_BLKADDR_VALIDITY]	= "invalid blkaddr",
 	[FAULT_BLKADDR_CONSISTENCE]	= "inconsistent blkaddr",
 	[FAULT_NO_SEGMENT]		= "no free segment",
+	[FAULT_INCONSISTENT_FOOTER]	= "inconsistent footer",
 };
 
 int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
@@ -190,6 +191,7 @@ enum {
 	Opt_memory_mode,
 	Opt_age_extent_cache,
 	Opt_errors,
+	Opt_nat_bits,
 	Opt_err,
 };
 
@@ -269,6 +271,7 @@ static match_table_t f2fs_tokens = {
 	{Opt_memory_mode, "memory=%s"},
 	{Opt_age_extent_cache, "age_extent_cache"},
 	{Opt_errors, "errors=%s"},
+	{Opt_nat_bits, "nat_bits"},
 	{Opt_err, NULL},
 };
 
@@ -383,10 +386,10 @@ static void init_once(void *foo)
 #ifdef CONFIG_QUOTA
 static const char * const quotatypes[] = INITQFNAMES;
 #define QTYPE2NAME(t) (quotatypes[t])
-static int f2fs_set_qf_name(struct super_block *sb, int qtype,
+static int f2fs_set_qf_name(struct f2fs_sb_info *sbi, int qtype,
 							substring_t *args)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(sb);
+	struct super_block *sb = sbi->sb;
 	char *qname;
 	int ret = -EINVAL;
 
@@ -424,9 +427,9 @@ errout:
 	return ret;
 }
 
-static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
+static int f2fs_clear_qf_name(struct f2fs_sb_info *sbi, int qtype)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(sb);
+	struct super_block *sb = sbi->sb;
 
 	if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
 		f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
@@ -483,12 +486,11 @@ static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
 }
 #endif
 
-static int f2fs_set_test_dummy_encryption(struct super_block *sb,
+static int f2fs_set_test_dummy_encryption(struct f2fs_sb_info *sbi,
 					  const char *opt,
 					  const substring_t *arg,
 					  bool is_remount)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	struct fs_parameter param = {
 		.type = fs_value_is_string,
 		.string = arg->from ? arg->from : "",
@@ -671,9 +673,8 @@ static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
 #endif
 #endif
 
-static int parse_options(struct super_block *sb, char *options, bool is_remount)
+static int parse_options(struct f2fs_sb_info *sbi, char *options, bool is_remount)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	substring_t args[MAX_OPT_ARGS];
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 	unsigned char (*ext)[F2FS_EXTENSION_LEN];
@@ -687,7 +688,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 	int ret;
 
 	if (!options)
-		goto default_check;
+		return 0;
 
 	while ((p = strsep(&options, ",")) != NULL) {
 		int token;
@@ -728,10 +729,8 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			set_opt(sbi, DISABLE_ROLL_FORWARD);
 			break;
 		case Opt_norecovery:
-			/* this option mounts f2fs with ro */
+			/* requires ro mount, checked in f2fs_default_check */
 			set_opt(sbi, NORECOVERY);
-			if (!f2fs_readonly(sb))
-				return -EINVAL;
 			break;
 		case Opt_discard:
 			if (!f2fs_hw_support_discard(sbi)) {
@@ -772,16 +771,11 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			break;
 #else
 		case Opt_user_xattr:
-			f2fs_info(sbi, "user_xattr options not supported");
-			break;
 		case Opt_nouser_xattr:
-			f2fs_info(sbi, "nouser_xattr options not supported");
-			break;
 		case Opt_inline_xattr:
-			f2fs_info(sbi, "inline_xattr options not supported");
-			break;
 		case Opt_noinline_xattr:
-			f2fs_info(sbi, "noinline_xattr options not supported");
+		case Opt_inline_xattr_size:
+			f2fs_info(sbi, "xattr options not supported");
 			break;
 #endif
 #ifdef CONFIG_F2FS_FS_POSIX_ACL
@@ -793,10 +787,8 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			break;
 #else
 		case Opt_acl:
-			f2fs_info(sbi, "acl options not supported");
-			break;
 		case Opt_noacl:
-			f2fs_info(sbi, "noacl options not supported");
+			f2fs_info(sbi, "acl options not supported");
 			break;
 #endif
 		case Opt_active_logs:
@@ -838,7 +830,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			set_opt(sbi, READ_EXTENT_CACHE);
 			break;
 		case Opt_noextent_cache:
-			if (F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_DEVICE_ALIAS)) {
+			if (f2fs_sb_has_device_alias(sbi)) {
 				f2fs_err(sbi, "device aliasing requires extent cache");
 				return -EINVAL;
 			}
@@ -919,18 +911,15 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			break;
 #else
 		case Opt_fault_injection:
-			f2fs_info(sbi, "fault_injection options not supported");
-			break;
-
 		case Opt_fault_type:
-			f2fs_info(sbi, "fault_type options not supported");
+			f2fs_info(sbi, "fault injection options not supported");
 			break;
 #endif
 		case Opt_lazytime:
-			sb->s_flags |= SB_LAZYTIME;
+			set_opt(sbi, LAZYTIME);
 			break;
 		case Opt_nolazytime:
-			sb->s_flags &= ~SB_LAZYTIME;
+			clear_opt(sbi, LAZYTIME);
 			break;
 #ifdef CONFIG_QUOTA
 		case Opt_quota:
@@ -944,32 +933,32 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			set_opt(sbi, PRJQUOTA);
 			break;
 		case Opt_usrjquota:
-			ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
+			ret = f2fs_set_qf_name(sbi, USRQUOTA, &args[0]);
 			if (ret)
 				return ret;
 			break;
 		case Opt_grpjquota:
-			ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
+			ret = f2fs_set_qf_name(sbi, GRPQUOTA, &args[0]);
 			if (ret)
 				return ret;
 			break;
 		case Opt_prjjquota:
-			ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
+			ret = f2fs_set_qf_name(sbi, PRJQUOTA, &args[0]);
 			if (ret)
 				return ret;
 			break;
 		case Opt_offusrjquota:
-			ret = f2fs_clear_qf_name(sb, USRQUOTA);
+			ret = f2fs_clear_qf_name(sbi, USRQUOTA);
 			if (ret)
 				return ret;
 			break;
 		case Opt_offgrpjquota:
-			ret = f2fs_clear_qf_name(sb, GRPQUOTA);
+			ret = f2fs_clear_qf_name(sbi, GRPQUOTA);
 			if (ret)
 				return ret;
 			break;
 		case Opt_offprjjquota:
-			ret = f2fs_clear_qf_name(sb, PRJQUOTA);
+			ret = f2fs_clear_qf_name(sbi, PRJQUOTA);
 			if (ret)
 				return ret;
 			break;
@@ -1039,14 +1028,14 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			kfree(name);
 			break;
 		case Opt_test_dummy_encryption:
-			ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
+			ret = f2fs_set_test_dummy_encryption(sbi, p, &args[0],
 							     is_remount);
 			if (ret)
 				return ret;
 			break;
 		case Opt_inlinecrypt:
 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
-			sb->s_flags |= SB_INLINECRYPT;
+			set_opt(sbi, INLINECRYPT);
 #else
 			f2fs_info(sbi, "inline encryption not supported");
 #endif
@@ -1322,13 +1311,20 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 			}
 			kfree(name);
 			break;
+		case Opt_nat_bits:
+			set_opt(sbi, NAT_BITS);
+			break;
 		default:
 			f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
 				 p);
 			return -EINVAL;
 		}
 	}
-default_check:
+	return 0;
+}
+
+static int f2fs_default_check(struct f2fs_sb_info *sbi)
+{
 #ifdef CONFIG_QUOTA
 	if (f2fs_check_quota_options(sbi))
 		return -EINVAL;
@@ -1418,6 +1414,12 @@ default_check:
 		f2fs_err(sbi, "Allow to mount readonly mode only");
 		return -EROFS;
 	}
+
+	if (test_opt(sbi, NORECOVERY) && !f2fs_readonly(sbi->sb)) {
+		f2fs_err(sbi, "norecovery requires readonly mount");
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
@@ -1441,6 +1443,7 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
 	spin_lock_init(&fi->i_size_lock);
 	INIT_LIST_HEAD(&fi->dirty_list);
 	INIT_LIST_HEAD(&fi->gdirty_list);
+	INIT_LIST_HEAD(&fi->gdonate_list);
 	init_f2fs_rwsem(&fi->i_gc_rwsem[READ]);
 	init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]);
 	init_f2fs_rwsem(&fi->i_xattr_sem);
@@ -1527,6 +1530,10 @@ int f2fs_inode_dirtied(struct inode *inode, bool sync)
 		inc_page_count(sbi, F2FS_DIRTY_IMETA);
 	}
 	spin_unlock(&sbi->inode_lock[DIRTY_META]);
+
+	if (!ret && f2fs_is_atomic_file(inode))
+		set_inode_flag(inode, FI_ATOMIC_DIRTIED);
+
 	return ret;
 }
 
@@ -1737,22 +1744,28 @@ int f2fs_sync_fs(struct super_block *sb, int sync)
 
 static int f2fs_freeze(struct super_block *sb)
 {
+	struct f2fs_sb_info *sbi = F2FS_SB(sb);
+
 	if (f2fs_readonly(sb))
 		return 0;
 
 	/* IO error happened before */
-	if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
+	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
 
 	/* must be clean, since sync_filesystem() was already called */
-	if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
+	if (is_sbi_flag_set(sbi, SBI_IS_DIRTY))
 		return -EINVAL;
 
+	sbi->umount_lock_holder = current;
+
 	/* Let's flush checkpoints and stop the thread. */
-	f2fs_flush_ckpt_thread(F2FS_SB(sb));
+	f2fs_flush_ckpt_thread(sbi);
+
+	sbi->umount_lock_holder = NULL;
 
 	/* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */
-	set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
+	set_sbi_flag(sbi, SBI_IS_FREEZING);
 	return 0;
 }
 
@@ -1836,7 +1849,8 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	buf->f_blocks = total_count - start_count;
 
 	spin_lock(&sbi->stat_lock);
-
+	if (sbi->carve_out)
+		buf->f_blocks -= sbi->current_reserved_blocks;
 	user_block_count = sbi->user_block_count;
 	total_valid_node_count = valid_node_count(sbi);
 	avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
@@ -2128,6 +2142,9 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 	else if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_PANIC)
 		seq_printf(seq, ",errors=%s", "panic");
 
+	if (test_opt(sbi, NAT_BITS))
+		seq_puts(seq, ",nat_bits");
+
 	return 0;
 }
 
@@ -2175,8 +2192,8 @@ static void default_options(struct f2fs_sb_info *sbi, bool remount)
 	set_opt(sbi, INLINE_DATA);
 	set_opt(sbi, INLINE_DENTRY);
 	set_opt(sbi, MERGE_CHECKPOINT);
+	set_opt(sbi, LAZYTIME);
 	F2FS_OPTION(sbi).unusable_cap = 0;
-	sbi->sb->s_flags |= SB_LAZYTIME;
 	if (!f2fs_is_readonly(sbi))
 		set_opt(sbi, FLUSH_MERGE);
 	if (f2fs_sb_has_blkzoned(sbi))
@@ -2318,6 +2335,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	bool no_discard = !test_opt(sbi, DISCARD);
 	bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
 	bool block_unit_discard = f2fs_block_unit_discard(sbi);
+	bool no_nat_bits = !test_opt(sbi, NAT_BITS);
 #ifdef CONFIG_QUOTA
 	int i, j;
 #endif
@@ -2329,6 +2347,8 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	org_mount_opt = sbi->mount_opt;
 	old_sb_flags = sb->s_flags;
 
+	sbi->umount_lock_holder = current;
+
 #ifdef CONFIG_QUOTA
 	org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
 	for (i = 0; i < MAXQUOTAS; i++) {
@@ -2359,7 +2379,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	default_options(sbi, true);
 
 	/* parse mount options */
-	err = parse_options(sb, data, true);
+	err = parse_options(sbi, data, true);
 	if (err)
 		goto restore_opts;
 
@@ -2374,6 +2394,10 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	}
 #endif
 
+	err = f2fs_default_check(sbi);
+	if (err)
+		goto restore_opts;
+
 	/* flush outstanding errors before changing fs state */
 	flush_work(&sbi->s_error_work);
 
@@ -2444,6 +2468,12 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 		goto restore_opts;
 	}
 
+	if (no_nat_bits == !!test_opt(sbi, NAT_BITS)) {
+		err = -EINVAL;
+		f2fs_warn(sbi, "switch nat_bits option is not allowed");
+		goto restore_opts;
+	}
+
 	if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
 		err = -EINVAL;
 		f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
@@ -2552,6 +2582,8 @@ skip:
 
 	limit_reserve_root(sbi);
 	*flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
+
+	sbi->umount_lock_holder = NULL;
 	return 0;
 restore_checkpoint:
 	if (need_enable_checkpoint) {
@@ -2592,6 +2624,8 @@ restore_opts:
 #endif
 	sbi->mount_opt = org_mount_opt;
 	sb->s_flags = old_sb_flags;
+
+	sbi->umount_lock_holder = NULL;
 	return err;
 }
 
@@ -2908,7 +2942,7 @@ out:
 	return ret;
 }
 
-int f2fs_quota_sync(struct super_block *sb, int type)
+int f2fs_do_quota_sync(struct super_block *sb, int type)
 {
 	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	struct quota_info *dqopt = sb_dqopt(sb);
@@ -2956,11 +2990,21 @@ int f2fs_quota_sync(struct super_block *sb, int type)
 	return ret;
 }
 
+static int f2fs_quota_sync(struct super_block *sb, int type)
+{
+	int ret;
+
+	F2FS_SB(sb)->umount_lock_holder = current;
+	ret = f2fs_do_quota_sync(sb, type);
+	F2FS_SB(sb)->umount_lock_holder = NULL;
+	return ret;
+}
+
 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
 							const struct path *path)
 {
 	struct inode *inode;
-	int err;
+	int err = 0;
 
 	/* if quota sysfile exists, deny enabling quota with specific file */
 	if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
@@ -2971,31 +3015,34 @@ static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
 	if (path->dentry->d_sb != sb)
 		return -EXDEV;
 
-	err = f2fs_quota_sync(sb, type);
+	F2FS_SB(sb)->umount_lock_holder = current;
+
+	err = f2fs_do_quota_sync(sb, type);
 	if (err)
-		return err;
+		goto out;
 
 	inode = d_inode(path->dentry);
 
 	err = filemap_fdatawrite(inode->i_mapping);
 	if (err)
-		return err;
+		goto out;
 
 	err = filemap_fdatawait(inode->i_mapping);
 	if (err)
-		return err;
+		goto out;
 
 	err = dquot_quota_on(sb, type, format_id, path);
 	if (err)
-		return err;
+		goto out;
 
 	inode_lock(inode);
 	F2FS_I(inode)->i_flags |= F2FS_QUOTA_DEFAULT_FL;
 	f2fs_set_inode_flags(inode);
 	inode_unlock(inode);
 	f2fs_mark_inode_dirty_sync(inode, false);
-
-	return 0;
+out:
+	F2FS_SB(sb)->umount_lock_holder = NULL;
+	return err;
 }
 
 static int __f2fs_quota_off(struct super_block *sb, int type)
@@ -3006,7 +3053,7 @@ static int __f2fs_quota_off(struct super_block *sb, int type)
 	if (!inode || !igrab(inode))
 		return dquot_quota_off(sb, type);
 
-	err = f2fs_quota_sync(sb, type);
+	err = f2fs_do_quota_sync(sb, type);
 	if (err)
 		goto out_put;
 
@@ -3029,6 +3076,8 @@ static int f2fs_quota_off(struct super_block *sb, int type)
 	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	int err;
 
+	F2FS_SB(sb)->umount_lock_holder = current;
+
 	err = __f2fs_quota_off(sb, type);
 
 	/*
@@ -3038,6 +3087,9 @@ static int f2fs_quota_off(struct super_block *sb, int type)
 	 */
 	if (is_journalled_quota(sbi))
 		set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+
+	F2FS_SB(sb)->umount_lock_holder = NULL;
+
 	return err;
 }
 
@@ -3170,7 +3222,7 @@ int f2fs_dquot_initialize(struct inode *inode)
 	return 0;
 }
 
-int f2fs_quota_sync(struct super_block *sb, int type)
+int f2fs_do_quota_sync(struct super_block *sb, int type)
 {
 	return 0;
 }
@@ -4220,6 +4272,8 @@ void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason)
 
 	if (shutdown)
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
+	else
+		dump_stack();
 
 	/*
 	 * Continue filesystem operators if errors=continue. Should not set
@@ -4495,7 +4549,11 @@ try_onemore:
 		goto free_sb_buf;
 	}
 
-	err = parse_options(sb, options, false);
+	err = parse_options(sbi, options, false);
+	if (err)
+		goto free_options;
+
+	err = f2fs_default_check(sbi);
 	if (err)
 		goto free_options;
 
@@ -4533,6 +4591,14 @@ try_onemore:
 	sb->s_time_gran = 1;
 	sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
 		(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
+	if (test_opt(sbi, INLINECRYPT))
+		sb->s_flags |= SB_INLINECRYPT;
+
+	if (test_opt(sbi, LAZYTIME))
+		sb->s_flags |= SB_LAZYTIME;
+	else
+		sb->s_flags &= ~SB_LAZYTIME;
+
 	super_set_uuid(sb, (void *) raw_super->uuid, sizeof(raw_super->uuid));
 	super_set_sysfs_name_bdev(sb);
 	sb->s_iflags |= SB_I_CGROUPWB;
@@ -4703,6 +4769,7 @@ try_onemore:
 	if (err)
 		goto free_compress_inode;
 
+	sbi->umount_lock_holder = current;
 #ifdef CONFIG_QUOTA
 	/* Enable quota usage during mount */
 	if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
@@ -4718,8 +4785,10 @@ try_onemore:
 	if (err)
 		goto free_meta;
 
-	if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
+	if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) {
+		skip_recovery = true;
 		goto reset_checkpoint;
+	}
 
 	/* recover fsynced data */
 	if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
@@ -4769,10 +4838,10 @@ try_onemore:
 		}
 	}
 
+reset_checkpoint:
 #ifdef CONFIG_QUOTA
 	f2fs_recover_quota_end(sbi, quota_enabled);
 #endif
-reset_checkpoint:
 	/*
 	 * If the f2fs is not readonly and fsync data recovery succeeds,
 	 * write pointer consistency of cursegs and other zones are already
@@ -4829,6 +4898,8 @@ reset_checkpoint:
 	f2fs_update_time(sbi, CP_TIME);
 	f2fs_update_time(sbi, REQ_TIME);
 	clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
+
+	sbi->umount_lock_holder = NULL;
 	return 0;
 
 sync_free_meta:
@@ -4931,6 +5002,8 @@ static void kill_f2fs_super(struct super_block *sb)
 	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 
 	if (sb->s_root) {
+		sbi->umount_lock_holder = current;
+
 		set_sbi_flag(sbi, SBI_IS_CLOSE);
 		f2fs_stop_gc_thread(sbi);
 		f2fs_stop_discard_thread(sbi);
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index d15c68b28952..c69161366467 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -61,6 +61,12 @@ struct f2fs_attr {
 	int id;
 };
 
+struct f2fs_base_attr {
+	struct attribute attr;
+	ssize_t (*show)(struct f2fs_base_attr *a, char *buf);
+	ssize_t (*store)(struct f2fs_base_attr *a, const char *buf, size_t len);
+};
+
 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
 			     struct f2fs_sb_info *sbi, char *buf);
 
@@ -862,6 +868,25 @@ static void f2fs_sb_release(struct kobject *kobj)
 	complete(&sbi->s_kobj_unregister);
 }
 
+static ssize_t f2fs_base_attr_show(struct kobject *kobj,
+				struct attribute *attr, char *buf)
+{
+	struct f2fs_base_attr *a = container_of(attr,
+				struct f2fs_base_attr, attr);
+
+	return a->show ? a->show(a, buf) : 0;
+}
+
+static ssize_t f2fs_base_attr_store(struct kobject *kobj,
+				struct attribute *attr,
+				const char *buf, size_t len)
+{
+	struct f2fs_base_attr *a = container_of(attr,
+				struct f2fs_base_attr, attr);
+
+	return a->store ? a->store(a, buf, len) : 0;
+}
+
 /*
  * Note that there are three feature list entries:
  * 1) /sys/fs/f2fs/features
@@ -880,18 +905,50 @@ static void f2fs_sb_release(struct kobject *kobj)
  *     please add new on-disk feature in this list only.
  *     - ref. F2FS_SB_FEATURE_RO_ATTR()
  */
-static ssize_t f2fs_feature_show(struct f2fs_attr *a,
-		struct f2fs_sb_info *sbi, char *buf)
+static ssize_t f2fs_feature_show(struct f2fs_base_attr *a, char *buf)
 {
 	return sysfs_emit(buf, "supported\n");
 }
 
 #define F2FS_FEATURE_RO_ATTR(_name)				\
-static struct f2fs_attr f2fs_attr_##_name = {			\
+static struct f2fs_base_attr f2fs_base_attr_##_name = {		\
 	.attr = {.name = __stringify(_name), .mode = 0444 },	\
 	.show	= f2fs_feature_show,				\
 }
 
+static ssize_t f2fs_tune_show(struct f2fs_base_attr *a, char *buf)
+{
+	unsigned int res = 0;
+
+	if (!strcmp(a->attr.name, "reclaim_caches_kb"))
+		res = f2fs_donate_files();
+
+	return sysfs_emit(buf, "%u\n", res);
+}
+
+static ssize_t f2fs_tune_store(struct f2fs_base_attr *a,
+			const char *buf, size_t count)
+{
+	unsigned long t;
+	int ret;
+
+	ret = kstrtoul(skip_spaces(buf), 0, &t);
+	if (ret)
+		return ret;
+
+	if (!strcmp(a->attr.name, "reclaim_caches_kb"))
+		f2fs_reclaim_caches(t);
+
+	return count;
+}
+
+#define F2FS_TUNE_RW_ATTR(_name)				\
+static struct f2fs_base_attr f2fs_base_attr_##_name = {		\
+	.attr = {.name = __stringify(_name), .mode = 0644 },	\
+	.show	= f2fs_tune_show,				\
+	.store	= f2fs_tune_store,				\
+}
+
 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
 		struct f2fs_sb_info *sbi, char *buf)
 {
@@ -1065,6 +1122,7 @@ F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count);
 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
 F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
 #endif
+F2FS_SBI_GENERAL_RW_ATTR(carve_out);
 
 /* STAT_INFO ATTR */
 #ifdef CONFIG_F2FS_STAT_FS
@@ -1252,41 +1310,43 @@ static struct attribute *f2fs_attrs[] = {
 	ATTR_LIST(warm_data_age_threshold),
 	ATTR_LIST(last_age_weight),
 	ATTR_LIST(max_read_extent_count),
+	ATTR_LIST(carve_out),
 	NULL,
 };
 ATTRIBUTE_GROUPS(f2fs);
 
+#define BASE_ATTR_LIST(name) (&f2fs_base_attr_##name.attr)
 static struct attribute *f2fs_feat_attrs[] = {
 #ifdef CONFIG_FS_ENCRYPTION
-	ATTR_LIST(encryption),
-	ATTR_LIST(test_dummy_encryption_v2),
+	BASE_ATTR_LIST(encryption),
+	BASE_ATTR_LIST(test_dummy_encryption_v2),
 #if IS_ENABLED(CONFIG_UNICODE)
-	ATTR_LIST(encrypted_casefold),
+	BASE_ATTR_LIST(encrypted_casefold),
 #endif
 #endif /* CONFIG_FS_ENCRYPTION */
 #ifdef CONFIG_BLK_DEV_ZONED
-	ATTR_LIST(block_zoned),
+	BASE_ATTR_LIST(block_zoned),
 #endif
-	ATTR_LIST(atomic_write),
-	ATTR_LIST(extra_attr),
-	ATTR_LIST(project_quota),
-	ATTR_LIST(inode_checksum),
-	ATTR_LIST(flexible_inline_xattr),
-	ATTR_LIST(quota_ino),
-	ATTR_LIST(inode_crtime),
-	ATTR_LIST(lost_found),
+	BASE_ATTR_LIST(atomic_write),
+	BASE_ATTR_LIST(extra_attr),
+	BASE_ATTR_LIST(project_quota),
+	BASE_ATTR_LIST(inode_checksum),
+	BASE_ATTR_LIST(flexible_inline_xattr),
+	BASE_ATTR_LIST(quota_ino),
+	BASE_ATTR_LIST(inode_crtime),
+	BASE_ATTR_LIST(lost_found),
 #ifdef CONFIG_FS_VERITY
-	ATTR_LIST(verity),
+	BASE_ATTR_LIST(verity),
 #endif
-	ATTR_LIST(sb_checksum),
+	BASE_ATTR_LIST(sb_checksum),
 #if IS_ENABLED(CONFIG_UNICODE)
-	ATTR_LIST(casefold),
+	BASE_ATTR_LIST(casefold),
 #endif
-	ATTR_LIST(readonly),
+	BASE_ATTR_LIST(readonly),
 #ifdef CONFIG_F2FS_FS_COMPRESSION
-	ATTR_LIST(compression),
+	BASE_ATTR_LIST(compression),
 #endif
-	ATTR_LIST(pin_file),
+	BASE_ATTR_LIST(pin_file),
 	NULL,
 };
 ATTRIBUTE_GROUPS(f2fs_feat);
@@ -1343,6 +1403,14 @@ static struct attribute *f2fs_sb_feat_attrs[] = {
 };
 ATTRIBUTE_GROUPS(f2fs_sb_feat);
 
+F2FS_TUNE_RW_ATTR(reclaim_caches_kb);
+
+static struct attribute *f2fs_tune_attrs[] = {
+	BASE_ATTR_LIST(reclaim_caches_kb),
+	NULL,
+};
+ATTRIBUTE_GROUPS(f2fs_tune);
+
 static const struct sysfs_ops f2fs_attr_ops = {
 	.show	= f2fs_attr_show,
 	.store	= f2fs_attr_store,
@@ -1362,15 +1430,34 @@ static struct kset f2fs_kset = {
 	.kobj	= {.ktype = &f2fs_ktype},
 };
 
+static const struct sysfs_ops f2fs_feat_attr_ops = {
+	.show	= f2fs_base_attr_show,
+	.store	= f2fs_base_attr_store,
+};
+
 static const struct kobj_type f2fs_feat_ktype = {
 	.default_groups = f2fs_feat_groups,
-	.sysfs_ops	= &f2fs_attr_ops,
+	.sysfs_ops	= &f2fs_feat_attr_ops,
 };
 
 static struct kobject f2fs_feat = {
 	.kset	= &f2fs_kset,
 };
 
+static const struct sysfs_ops f2fs_tune_attr_ops = {
+	.show	= f2fs_base_attr_show,
+	.store	= f2fs_base_attr_store,
+};
+
+static const struct kobj_type f2fs_tune_ktype = {
+	.default_groups = f2fs_tune_groups,
+	.sysfs_ops	= &f2fs_tune_attr_ops,
+};
+
+static struct kobject f2fs_tune = {
+	.kset	= &f2fs_kset,
+};
+
 static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
 				struct attribute *attr, char *buf)
 {
@@ -1607,6 +1694,11 @@ int __init f2fs_init_sysfs(void)
 	if (ret)
 		goto put_kobject;
 
+	ret = kobject_init_and_add(&f2fs_tune, &f2fs_tune_ktype,
+				   NULL, "tuning");
+	if (ret)
+		goto put_kobject;
+
 	f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
 	if (!f2fs_proc_root) {
 		ret = -ENOMEM;
@@ -1614,7 +1706,9 @@ int __init f2fs_init_sysfs(void)
 	}
 
 	return 0;
+
 put_kobject:
+	kobject_put(&f2fs_tune);
 	kobject_put(&f2fs_feat);
 	kset_unregister(&f2fs_kset);
 	return ret;
@@ -1622,6 +1716,7 @@ put_kobject:
 
 void f2fs_exit_sysfs(void)
 {
+	kobject_put(&f2fs_tune);
 	kobject_put(&f2fs_feat);
 	kset_unregister(&f2fs_kset);
 	remove_proc_entry("fs/f2fs", NULL);
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 3f3874943679..c691b35618ad 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -282,7 +282,7 @@ static int read_inline_xattr(struct inode *inode, struct page *ipage,
 	if (ipage) {
 		inline_addr = inline_xattr_addr(inode, ipage);
 	} else {
-		page = f2fs_get_node_page(sbi, inode->i_ino);
+		page = f2fs_get_inode_page(sbi, inode->i_ino);
 		if (IS_ERR(page))
 			return PTR_ERR(page);
 
@@ -303,7 +303,7 @@ static int read_xattr_block(struct inode *inode, void *txattr_addr)
 	void *xattr_addr;
 
 	/* The inode already has an extended attribute block. */
-	xpage = f2fs_get_node_page(sbi, xnid);
+	xpage = f2fs_get_xnode_page(sbi, xnid);
 	if (IS_ERR(xpage))
 		return PTR_ERR(xpage);
 
@@ -449,7 +449,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
 		if (ipage) {
 			inline_addr = inline_xattr_addr(inode, ipage);
 		} else {
-			in_page = f2fs_get_node_page(sbi, inode->i_ino);
+			in_page = f2fs_get_inode_page(sbi, inode->i_ino);
 			if (IS_ERR(in_page)) {
 				f2fs_alloc_nid_failed(sbi, new_nid);
 				return PTR_ERR(in_page);
@@ -475,7 +475,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
 
 	/* write to xattr node block */
 	if (F2FS_I(inode)->i_xattr_nid) {
-		xpage = f2fs_get_node_page(sbi, F2FS_I(inode)->i_xattr_nid);
+		xpage = f2fs_get_xnode_page(sbi, F2FS_I(inode)->i_xattr_nid);
 		if (IS_ERR(xpage)) {
 			err = PTR_ERR(xpage);
 			f2fs_alloc_nid_failed(sbi, new_nid);