From 675f10bde6cc3874632a8f684df2a8a2a8ace76e Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 22 Feb 2016 18:29:18 +0800 Subject: f2fs: fix to convert inline directory correctly With below serials, we will lose parts of dirents: 1) mount f2fs with inline_dentry option 2) echo 1 > /sys/fs/f2fs/sdX/dir_level 3) mkdir dir 4) touch 180 files named [1-180] in dir 5) touch 181 in dir 6) echo 3 > /proc/sys/vm/drop_caches 7) ll dir ls: cannot access 2: No such file or directory ls: cannot access 4: No such file or directory ls: cannot access 5: No such file or directory ls: cannot access 6: No such file or directory ls: cannot access 8: No such file or directory ls: cannot access 9: No such file or directory ... total 360 drwxr-xr-x 2 root root 4096 Feb 19 15:12 ./ drwxr-xr-x 3 root root 4096 Feb 19 15:11 ../ -rw-r--r-- 1 root root 0 Feb 19 15:12 1 -rw-r--r-- 1 root root 0 Feb 19 15:12 10 -rw-r--r-- 1 root root 0 Feb 19 15:12 100 -????????? ? ? ? ? ? 101 -????????? ? ? ? ? ? 102 -????????? ? ? ? ? ? 103 ... The reason is: when doing the inline dir conversion, we didn't consider that directory has hierarchical hash structure which can be configured through sysfs interface 'dir_level'. By default, dir_level of directory inode is 0, it means we have one bucket in hash table located in first level, all dirents will be hashed in this bucket, so it has no problem for us to do the duplication simply between inline dentry page and converted normal dentry page. However, if we configured dir_level with the value N (greater than 0), it will expand the bucket number of first level hash table by 2^N - 1, it hashs dirents into different buckets according their hash value, if we still move all dirents to first bucket, it makes incorrent locating for inline dirents, the result is, although we can iterate all dirents through ->readdir, we can't stat some of them in ->lookup which based on hash table searching. This patch fixes this issue by rehashing dirents into correct position when converting inline directory. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 87 +++++++++++++++++++++++++++++++---------------------------- 1 file changed, 46 insertions(+), 41 deletions(-) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index af819571bce7..e90380d82214 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -48,7 +48,6 @@ unsigned char f2fs_filetype_table[F2FS_FT_MAX] = { [F2FS_FT_SYMLINK] = DT_LNK, }; -#define S_SHIFT 12 static unsigned char f2fs_type_by_mode[S_IFMT >> S_SHIFT] = { [S_IFREG >> S_SHIFT] = F2FS_FT_REG_FILE, [S_IFDIR >> S_SHIFT] = F2FS_FT_DIR, @@ -64,6 +63,13 @@ void set_de_type(struct f2fs_dir_entry *de, umode_t mode) de->file_type = f2fs_type_by_mode[(mode & S_IFMT) >> S_SHIFT]; } +unsigned char get_de_type(struct f2fs_dir_entry *de) +{ + if (de->file_type < F2FS_FT_MAX) + return f2fs_filetype_table[de->file_type]; + return DT_UNKNOWN; +} + static unsigned long dir_block_index(unsigned int level, int dir_level, unsigned int idx) { @@ -509,11 +515,7 @@ void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d, } } -/* - * Caller should grab and release a rwsem by calling f2fs_lock_op() and - * f2fs_unlock_op(). - */ -int __f2fs_add_link(struct inode *dir, const struct qstr *name, +int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name, struct inode *inode, nid_t ino, umode_t mode) { unsigned int bit_pos; @@ -526,28 +528,11 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name, struct f2fs_dentry_block *dentry_blk = NULL; struct f2fs_dentry_ptr d; struct page *page = NULL; - struct fscrypt_name fname; - struct qstr new_name; - int slots, err; - - err = fscrypt_setup_filename(dir, name, 0, &fname); - if (err) - return err; - - new_name.name = fname_name(&fname); - new_name.len = fname_len(&fname); - - if (f2fs_has_inline_dentry(dir)) { - err = f2fs_add_inline_entry(dir, &new_name, inode, ino, mode); - if (!err || err != -EAGAIN) - goto out; - else - err = 0; - } + int slots, err = 0; level = 0; - slots = GET_DENTRY_SLOTS(new_name.len); - dentry_hash = f2fs_dentry_hash(&new_name); + slots = GET_DENTRY_SLOTS(new_name->len); + dentry_hash = f2fs_dentry_hash(new_name); current_depth = F2FS_I(dir)->i_current_depth; if (F2FS_I(dir)->chash == dentry_hash) { @@ -556,10 +541,8 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name, } start: - if (unlikely(current_depth == MAX_DIR_HASH_DEPTH)) { - err = -ENOSPC; - goto out; - } + if (unlikely(current_depth == MAX_DIR_HASH_DEPTH)) + return -ENOSPC; /* Increase the depth, if required */ if (level == current_depth) @@ -573,10 +556,8 @@ start: for (block = bidx; block <= (bidx + nblock - 1); block++) { dentry_page = get_new_data_page(dir, NULL, block, true); - if (IS_ERR(dentry_page)) { - err = PTR_ERR(dentry_page); - goto out; - } + if (IS_ERR(dentry_page)) + return PTR_ERR(dentry_page); dentry_blk = kmap(dentry_page); bit_pos = room_for_filename(&dentry_blk->dentry_bitmap, @@ -596,7 +577,7 @@ add_dentry: if (inode) { down_write(&F2FS_I(inode)->i_sem); - page = init_inode_metadata(inode, dir, &new_name, NULL); + page = init_inode_metadata(inode, dir, new_name, NULL); if (IS_ERR(page)) { err = PTR_ERR(page); goto fail; @@ -606,7 +587,7 @@ add_dentry: } make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1); - f2fs_update_dentry(ino, mode, &d, &new_name, dentry_hash, bit_pos); + f2fs_update_dentry(ino, mode, &d, new_name, dentry_hash, bit_pos); set_page_dirty(dentry_page); @@ -628,7 +609,34 @@ fail: } kunmap(dentry_page); f2fs_put_page(dentry_page, 1); -out: + + return err; +} + +/* + * Caller should grab and release a rwsem by calling f2fs_lock_op() and + * f2fs_unlock_op(). + */ +int __f2fs_add_link(struct inode *dir, const struct qstr *name, + struct inode *inode, nid_t ino, umode_t mode) +{ + struct fscrypt_name fname; + struct qstr new_name; + int err; + + err = fscrypt_setup_filename(dir, name, 0, &fname); + if (err) + return err; + + new_name.name = fname_name(&fname); + new_name.len = fname_len(&fname); + + err = -EAGAIN; + if (f2fs_has_inline_dentry(dir)) + err = f2fs_add_inline_entry(dir, &new_name, inode, ino, mode); + if (err == -EAGAIN) + err = f2fs_add_regular_entry(dir, &new_name, inode, ino, mode); + fscrypt_free_filename(&fname); f2fs_update_time(F2FS_I_SB(dir), REQ_TIME); return err; @@ -792,10 +800,7 @@ bool f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, continue; } - if (de->file_type < F2FS_FT_MAX) - d_type = f2fs_filetype_table[de->file_type]; - else - d_type = DT_UNKNOWN; + d_type = get_de_type(de); de_name.name = d->filename[bit_pos]; de_name.len = le16_to_cpu(de->name_len); -- cgit v1.2.3 From a4a13f582c6d36b78b1c0459ee0b28f17bb2fb06 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Wed, 27 Apr 2016 22:22:20 +0800 Subject: f2fs: be aware of invalid filename length The filename length in dirent of may become zero-sized after random junk data injection, once encounter such dirent, find_target_dentry or f2fs_add_inline_entries will run into an infinite loop. So let f2fs being aware of that to avoid deadloop. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 14 +++++--------- fs/f2fs/inline.c | 14 ++++++-------- 2 files changed, 11 insertions(+), 17 deletions(-) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index e90380d82214..3b1c14e4eeea 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -101,11 +101,6 @@ static struct f2fs_dir_entry *find_in_block(struct page *dentry_page, else kunmap(dentry_page); - /* - * For the most part, it should be a bug when name_len is zero. - * We stop here for figuring out where the bugs has occurred. - */ - f2fs_bug_on(F2FS_P_SB(dentry_page), d.max < 0); return de; } @@ -130,6 +125,11 @@ struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname, de = &d->dentry[bit_pos]; + if (unlikely(!de->name_len)) { + bit_pos++; + continue; + } + /* encrypted case */ de_name.name = d->filename[bit_pos]; de_name.len = le16_to_cpu(de->name_len); @@ -147,10 +147,6 @@ struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname, *max_slots = max_len; max_len = 0; - /* remain bug on condition */ - if (unlikely(!de->name_len)) - d->max = -1; - bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); } diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 772056587eb9..e61084cac5f1 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -303,11 +303,6 @@ struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, else f2fs_put_page(ipage, 0); - /* - * For the most part, it should be a bug when name_len is zero. - * We stop here for figuring out where the bugs has occurred. - */ - f2fs_bug_on(sbi, d.max < 0); return de; } @@ -437,6 +432,12 @@ static int f2fs_add_inline_entries(struct inode *dir, } de = &d.dentry[bit_pos]; + + if (unlikely(!de->name_len)) { + bit_pos++; + continue; + } + new_name.name = d.filename[bit_pos]; new_name.len = de->name_len; @@ -448,9 +449,6 @@ static int f2fs_add_inline_entries(struct inode *dir, if (err) goto punch_dentry_pages; - if (unlikely(!de->name_len)) - d.max = -1; - bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); } return 0; -- cgit v1.2.3 From fe216c7a0ff993cdac885109d8544ba02e6f9127 Mon Sep 17 00:00:00 2001 From: Yunlong Song Date: Wed, 27 Apr 2016 20:32:37 +0800 Subject: f2fs: fix to return 0 if err == -ENOENT in f2fs_readdir Commit 57b62d29ad5b384775974973087d47755a8c6fcc ("f2fs: fix to report error in f2fs_readdir") causes f2fs_readdir to return -ENOENT when get_lock_data_page returns -ENOENT. However, the original logic is to continue when get_lock_data_page returns -ENOENT, but it forgets to reset err to 0. This will cause getdents64 incorretly return -ENOENT when lastdirent is NULL in getdents64. This will lead to a wrong return value for syscall caller. Signed-off-by: Yunlong Song Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 3b1c14e4eeea..dbfc1d1375a0 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -888,6 +888,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) kunmap(dentry_page); f2fs_put_page(dentry_page, 1); } + err = 0; out: fscrypt_fname_free_buffer(&fstr); return err; -- cgit v1.2.3 From 0414b004a894746921bbc05f05dced1e7907b092 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 29 Apr 2016 15:16:42 -0700 Subject: f2fs: introduce f2fs_kmalloc to wrap kmalloc This patch adds f2fs_kmalloc. Signed-off-by: Jaegeuk Kim --- fs/f2fs/acl.c | 4 ++-- fs/f2fs/dir.c | 2 +- fs/f2fs/f2fs.h | 5 +++++ fs/f2fs/gc.c | 2 +- fs/f2fs/inline.c | 2 +- 5 files changed, 10 insertions(+), 5 deletions(-) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index c8f25f7241f0..d757d79a4d71 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -115,7 +115,7 @@ static void *f2fs_acl_to_disk(const struct posix_acl *acl, size_t *size) struct f2fs_acl_entry *entry; int i; - f2fs_acl = kmalloc(sizeof(struct f2fs_acl_header) + acl->a_count * + f2fs_acl = f2fs_kmalloc(sizeof(struct f2fs_acl_header) + acl->a_count * sizeof(struct f2fs_acl_entry), GFP_NOFS); if (!f2fs_acl) return ERR_PTR(-ENOMEM); @@ -175,7 +175,7 @@ static struct posix_acl *__f2fs_get_acl(struct inode *inode, int type, retval = f2fs_getxattr(inode, name_index, "", NULL, 0, dpage); if (retval > 0) { - value = kmalloc(retval, GFP_F2FS_ZERO); + value = f2fs_kmalloc(retval, GFP_F2FS_ZERO); if (!value) return ERR_PTR(-ENOMEM); retval = f2fs_getxattr(inode, name_index, "", value, diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index dbfc1d1375a0..6bd059591405 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -805,7 +805,7 @@ bool f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, int save_len = fstr->len; int ret; - de_name.name = kmalloc(de_name.len, GFP_NOFS); + de_name.name = f2fs_kmalloc(de_name.len, GFP_NOFS); if (!de_name.name) return false; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6a482411e6d4..879e4d77a1bc 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1644,6 +1644,11 @@ static inline bool f2fs_may_extent_tree(struct inode *inode) return S_ISREG(inode->i_mode); } +static inline void *f2fs_kmalloc(size_t size, gfp_t flags) +{ + return kmalloc(size, flags); +} + static inline void *f2fs_kvmalloc(size_t size, gfp_t flags) { void *ret; diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 19e9fafc5c70..38d56f678912 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -96,7 +96,7 @@ int start_gc_thread(struct f2fs_sb_info *sbi) dev_t dev = sbi->sb->s_bdev->bd_dev; int err = 0; - gc_th = kmalloc(sizeof(struct f2fs_gc_kthread), GFP_KERNEL); + gc_th = f2fs_kmalloc(sizeof(struct f2fs_gc_kthread), GFP_KERNEL); if (!gc_th) { err = -ENOMEM; goto out; diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index e61084cac5f1..33830b251426 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -465,7 +465,7 @@ static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, struct f2fs_inline_dentry *backup_dentry; int err; - backup_dentry = kmalloc(sizeof(struct f2fs_inline_dentry), + backup_dentry = f2fs_kmalloc(sizeof(struct f2fs_inline_dentry), GFP_F2FS_ZERO); if (!backup_dentry) return -ENOMEM; -- cgit v1.2.3 From cb78942b821380913e6810375c9ce72858e64c4f Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 29 Apr 2016 16:29:22 -0700 Subject: f2fs: inject ENOSPC failures This patch injects ENOSPC failures. Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 7 +++++++ fs/f2fs/dir.c | 4 ++++ fs/f2fs/f2fs.h | 10 ++++++++++ fs/f2fs/node.c | 4 ++++ fs/f2fs/super.c | 4 ++++ 5 files changed, 29 insertions(+) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 9596d61ca6a8..79da86d6cf5c 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -474,6 +474,13 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi) int err = 0; spin_lock(&im->ino_lock); + +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_ORPHAN)) { + spin_unlock(&im->ino_lock); + return -ENOSPC; + } +#endif if (unlikely(im->ino_num >= sbi->max_orphans)) err = -ENOSPC; else diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 6bd059591405..50f42be4ff1a 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -537,6 +537,10 @@ int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name, } start: +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_DIR_DEPTH)) + return -ENOSPC; +#endif if (unlikely(current_depth == MAX_DIR_HASH_DEPTH)) return -ENOSPC; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index d550a95d30f1..8ba2f923d95a 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -41,6 +41,10 @@ enum { FAULT_KMALLOC, FAULT_PAGE_ALLOC, + FAULT_ALLOC_NID, + FAULT_ORPHAN, + FAULT_BLOCK, + FAULT_DIR_DEPTH, FAULT_MAX, }; @@ -1087,6 +1091,12 @@ static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, block_t valid_block_count; spin_lock(&sbi->stat_lock); +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_BLOCK)) { + spin_unlock(&sbi->stat_lock); + return false; + } +#endif valid_block_count = sbi->total_valid_block_count + (block_t)count; if (unlikely(valid_block_count > sbi->user_block_count)) { diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index af010f5c4ee1..78b98db48805 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1838,6 +1838,10 @@ bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) struct f2fs_nm_info *nm_i = NM_I(sbi); struct free_nid *i = NULL; retry: +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_ALLOC_NID)) + return false; +#endif if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids)) return false; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 986d0da84e01..87654f48c55d 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -46,6 +46,10 @@ atomic_t f2fs_ops; char *fault_name[FAULT_MAX] = { [FAULT_KMALLOC] = "kmalloc", [FAULT_PAGE_ALLOC] = "page alloc", + [FAULT_ALLOC_NID] = "alloc nid", + [FAULT_ORPHAN] = "orphan", + [FAULT_BLOCK] = "no more block", + [FAULT_DIR_DEPTH] = "too big dir depth", }; #endif -- cgit v1.2.3 From 221149c00e64c202e6e172a9c4efad142a6b610d Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Mon, 2 May 2016 12:34:48 -0700 Subject: f2fs: revisit error handling flows This patch fixes a couple of bugs regarding to orphan inodes when handling errors. This tries to - call alloc_nid_done with add_orphan_inode in handle_failed_inode - let truncate blocks in f2fs_evict_inode - not make a bad inode due to i_mode change Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 20 ++++++++++++-------- fs/f2fs/inode.c | 40 ++++++++++++++++------------------------ 2 files changed, 28 insertions(+), 32 deletions(-) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 50f42be4ff1a..5373f333a7d7 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -391,9 +391,14 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir, return page; if (S_ISDIR(inode->i_mode)) { + /* in order to handle error case */ + get_page(page); err = make_empty_dir(inode, dir, page); - if (err) - goto error; + if (err) { + lock_page(page); + goto put_error; + } + put_page(page); } err = f2fs_init_acl(inode, dir, page, dpage); @@ -437,13 +442,12 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir, return page; put_error: - f2fs_put_page(page, 1); -error: - /* once the failed inode becomes a bad inode, i_mode is S_IFREG */ + /* truncate empty dir pages */ truncate_inode_pages(&inode->i_data, 0); - truncate_blocks(inode, 0, false); - remove_dirty_inode(inode); - remove_inode_page(inode); + + clear_nlink(inode); + update_inode(inode, page); + f2fs_put_page(page, 1); return ERR_PTR(err); } diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index cb269c46ac25..f4ac8512b7ba 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -368,10 +368,7 @@ no_delete: if (is_inode_flag_set(fi, FI_UPDATE_WRITE)) add_ino_entry(sbi, inode->i_ino, UPDATE_INO); if (is_inode_flag_set(fi, FI_FREE_NID)) { - if (err && err != -ENOENT) - alloc_nid_done(sbi, inode->i_ino); - else - alloc_nid_failed(sbi, inode->i_ino); + alloc_nid_failed(sbi, inode->i_ino); clear_inode_flag(fi, FI_FREE_NID); } @@ -397,37 +394,32 @@ out_clear: void handle_failed_inode(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - int err = 0; + struct node_info ni; - clear_nlink(inode); - make_bad_inode(inode); + /* don't make bad inode, since it becomes a regular file. */ unlock_new_inode(inode); - i_size_write(inode, 0); - if (F2FS_HAS_BLOCKS(inode)) - err = f2fs_truncate(inode, false); - - if (!err) - err = remove_inode_page(inode); - /* - * if we skip truncate_node in remove_inode_page bacause we failed - * before, it's better to find another way to release resource of - * this inode (e.g. valid block count, node block or nid). Here we - * choose to add this inode to orphan list, so that we can call iput - * for releasing in orphan recovery flow. - * * Note: we should add inode to orphan list before f2fs_unlock_op() * so we can prevent losing this orphan when encoutering checkpoint * and following suddenly power-off. */ - if (err && err != -ENOENT) { - err = acquire_orphan_inode(sbi); - if (!err) + get_node_info(sbi, inode->i_ino, &ni); + + if (ni.blk_addr != NULL_ADDR) { + int err = acquire_orphan_inode(sbi); + if (err) { + set_sbi_flag(sbi, SBI_NEED_FSCK); + f2fs_msg(sbi->sb, KERN_WARNING, + "Too many orphan inodes, run fsck to fix."); + } else { add_orphan_inode(sbi, inode->i_ino); + } + alloc_nid_done(sbi, inode->i_ino); + } else { + set_inode_flag(F2FS_I(inode), FI_FREE_NID); } - set_inode_flag(F2FS_I(inode), FI_FREE_NID); f2fs_unlock_op(sbi); /* iput will drop the inode object */ -- cgit v1.2.3