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bcachefs: bch2_rename_trans() only runs rename-to-dir code if needed

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2025-05-19 09:17:39 -04:00
parent 011d644b76
commit 7c4f22af25
1 changed files with 27 additions and 25 deletions
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52
fs/bcachefs/namei.c
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@@ -496,33 +496,35 @@ int bch2_rename_trans(struct btree_trans *trans,
}
}
if (bch2_reinherit_attrs(src_inode_u, dst_dir_u) &&
S_ISDIR(src_inode_u->bi_mode)) {
ret = -EXDEV;
goto err;
if (!subvol_inum_eq(dst_dir, src_dir)) {
if (bch2_reinherit_attrs(src_inode_u, dst_dir_u) &&
S_ISDIR(src_inode_u->bi_mode)) {
ret = -EXDEV;
goto err;
}
if (mode == BCH_RENAME_EXCHANGE &&
bch2_reinherit_attrs(dst_inode_u, src_dir_u) &&
S_ISDIR(dst_inode_u->bi_mode)) {
ret = -EXDEV;
goto err;
}
if (is_subdir_for_nlink(src_inode_u)) {
src_dir_u->bi_nlink--;
dst_dir_u->bi_nlink++;
}
if (S_ISDIR(src_inode_u->bi_mode) &&
!src_inode_u->bi_subvol)
src_inode_u->bi_depth = dst_dir_u->bi_depth + 1;
if (mode == BCH_RENAME_EXCHANGE &&
S_ISDIR(dst_inode_u->bi_mode) &&
!dst_inode_u->bi_subvol)
dst_inode_u->bi_depth = src_dir_u->bi_depth + 1;
}
if (mode == BCH_RENAME_EXCHANGE &&
bch2_reinherit_attrs(dst_inode_u, src_dir_u) &&
S_ISDIR(dst_inode_u->bi_mode)) {
ret = -EXDEV;
goto err;
}
if (is_subdir_for_nlink(src_inode_u)) {
src_dir_u->bi_nlink--;
dst_dir_u->bi_nlink++;
}
if (S_ISDIR(src_inode_u->bi_mode) &&
!src_inode_u->bi_subvol)
src_inode_u->bi_depth = dst_dir_u->bi_depth + 1;
if (mode == BCH_RENAME_EXCHANGE &&
S_ISDIR(dst_inode_u->bi_mode) &&
!dst_inode_u->bi_subvol)
dst_inode_u->bi_depth = src_dir_u->bi_depth + 1;
if (dst_inum.inum && is_subdir_for_nlink(dst_inode_u)) {
dst_dir_u->bi_nlink--;
src_dir_u->bi_nlink += mode == BCH_RENAME_EXCHANGE;