Merge tag 'bcachefs-2024-10-05' of git://evilpiepirate.org/bcachefs

Pull bcachefs fixes from Kent Overstreet:
 "A lot of little fixes, bigger ones include:

   - bcachefs's __wait_on_freeing_inode() was broken in rc1 due to vfs
     changes, now fixed along with another lost wakeup

   - fragmentation LRU fixes; fsck now repairs successfully (this is the
     data structure copygc uses); along with some nice simplification.

   - Rework logged op error handling, so that if logged op replay errors
     (due to another filesystem error) we delete the logged op instead
     of going into an infinite loop)

   - Various small filesystem connectivitity repair fixes"

* tag 'bcachefs-2024-10-05' of git://evilpiepirate.org/bcachefs:
  bcachefs: Rework logged op error handling
  bcachefs: Add warn param to subvol_get_snapshot, peek_inode
  bcachefs: Kill snapshot arg to fsck_write_inode()
  bcachefs: Check for unlinked, non-empty dirs in check_inode()
  bcachefs: Check for unlinked inodes with dirents
  bcachefs: Check for directories with no backpointers
  bcachefs: Kill alloc_v4.fragmentation_lru
  bcachefs: minor lru fsck fixes
  bcachefs: Mark more errors AUTOFIX
  bcachefs: Make sure we print error that causes fsck to bail out
  bcachefs: bkey errors are only AUTOFIX during read
  bcachefs: Create lost+found in correct snapshot
  bcachefs: Fix reattach_inode()
  bcachefs: Add missing wakeup to bch2_inode_hash_remove()
  bcachefs: Fix trans_commit disk accounting revert
  bcachefs: Fix bch2_inode_is_open() check
  bcachefs: Fix return type of dirent_points_to_inode_nowarn()
  bcachefs: Fix bad shift in bch2_read_flag_list()

1 files changed, 15 insertions, 29 deletions

diff --git a/fs/bcachefs/inode.c b/fs/bcachefs/inode.c
index f414c69acc44..3e5bc01961b8 100644
--- a/fs/bcachefs/inode.c
+++ b/fs/bcachefs/inode.c
@@ -327,22 +327,20 @@ int bch2_inode_unpack(struct bkey_s_c k,
 		: bch2_inode_unpack_slowpath(k, unpacked);
 }
 
-int bch2_inode_peek_nowarn(struct btree_trans *trans,
-		    struct btree_iter *iter,
-		    struct bch_inode_unpacked *inode,
-		    subvol_inum inum, unsigned flags)
+int __bch2_inode_peek(struct btree_trans *trans,
+		      struct btree_iter *iter,
+		      struct bch_inode_unpacked *inode,
+		      subvol_inum inum, unsigned flags,
+		      bool warn)
 {
-	struct bkey_s_c k;
 	u32 snapshot;
-	int ret;
-
-	ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot);
+	int ret = __bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot, warn);
 	if (ret)
 		return ret;
 
-	k = bch2_bkey_get_iter(trans, iter, BTREE_ID_inodes,
-			       SPOS(0, inum.inum, snapshot),
-			       flags|BTREE_ITER_cached);
+	struct bkey_s_c k = bch2_bkey_get_iter(trans, iter, BTREE_ID_inodes,
+					       SPOS(0, inum.inum, snapshot),
+					       flags|BTREE_ITER_cached);
 	ret = bkey_err(k);
 	if (ret)
 		return ret;
@@ -357,20 +355,12 @@ int bch2_inode_peek_nowarn(struct btree_trans *trans,
 
 	return 0;
 err:
+	if (warn)
+		bch_err_msg(trans->c, ret, "looking up inum %llu:%llu:", inum.subvol, inum.inum);
 	bch2_trans_iter_exit(trans, iter);
 	return ret;
 }
 
-int bch2_inode_peek(struct btree_trans *trans,
-		    struct btree_iter *iter,
-		    struct bch_inode_unpacked *inode,
-		    subvol_inum inum, unsigned flags)
-{
-	int ret = bch2_inode_peek_nowarn(trans, iter, inode, inum, flags);
-	bch_err_msg(trans->c, ret, "looking up inum %llu:%llu:", inum.subvol, inum.inum);
-	return ret;
-}
-
 int bch2_inode_write_flags(struct btree_trans *trans,
 		     struct btree_iter *iter,
 		     struct bch_inode_unpacked *inode,
@@ -387,9 +377,7 @@ int bch2_inode_write_flags(struct btree_trans *trans,
 	return bch2_trans_update(trans, iter, &inode_p->inode.k_i, flags);
 }
 
-int __bch2_fsck_write_inode(struct btree_trans *trans,
-			 struct bch_inode_unpacked *inode,
-			 u32 snapshot)
+int __bch2_fsck_write_inode(struct btree_trans *trans, struct bch_inode_unpacked *inode)
 {
 	struct bkey_inode_buf *inode_p =
 		bch2_trans_kmalloc(trans, sizeof(*inode_p));
@@ -398,19 +386,17 @@ int __bch2_fsck_write_inode(struct btree_trans *trans,
 		return PTR_ERR(inode_p);
 
 	bch2_inode_pack(inode_p, inode);
-	inode_p->inode.k.p.snapshot = snapshot;
+	inode_p->inode.k.p.snapshot = inode->bi_snapshot;
 
 	return bch2_btree_insert_nonextent(trans, BTREE_ID_inodes,
 				&inode_p->inode.k_i,
 				BTREE_UPDATE_internal_snapshot_node);
 }
 
-int bch2_fsck_write_inode(struct btree_trans *trans,
-			    struct bch_inode_unpacked *inode,
-			    u32 snapshot)
+int bch2_fsck_write_inode(struct btree_trans *trans, struct bch_inode_unpacked *inode)
 {
 	int ret = commit_do(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
-			    __bch2_fsck_write_inode(trans, inode, snapshot));
+			    __bch2_fsck_write_inode(trans, inode));
 	bch_err_fn(trans->c, ret);
 	return ret;
 }