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Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r--fs/btrfs/inode.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 26d6ed170a19..fc66872b4c74 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4710,7 +4710,6 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info;
int ret = 0;
struct btrfs_trans_handle *trans;
- u64 last_unlink_trans;
struct fscrypt_name fname;
if (inode->i_size > BTRFS_EMPTY_DIR_SIZE)
@@ -4736,6 +4735,23 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
goto out_notrans;
}
+ /*
+ * Propagate the last_unlink_trans value of the deleted dir to its
+ * parent directory. This is to prevent an unrecoverable log tree in the
+ * case we do something like this:
+ * 1) create dir foo
+ * 2) create snapshot under dir foo
+ * 3) delete the snapshot
+ * 4) rmdir foo
+ * 5) mkdir foo
+ * 6) fsync foo or some file inside foo
+ *
+ * This is because we can't unlink other roots when replaying the dir
+ * deletes for directory foo.
+ */
+ if (BTRFS_I(inode)->last_unlink_trans >= trans->transid)
+ btrfs_record_snapshot_destroy(trans, BTRFS_I(dir));
+
if (unlikely(btrfs_ino(BTRFS_I(inode)) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
ret = btrfs_unlink_subvol(trans, BTRFS_I(dir), dentry);
goto out;
@@ -4745,27 +4761,11 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
if (ret)
goto out;
- last_unlink_trans = BTRFS_I(inode)->last_unlink_trans;
-
/* now the directory is empty */
ret = btrfs_unlink_inode(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
&fname.disk_name);
- if (!ret) {
+ if (!ret)
btrfs_i_size_write(BTRFS_I(inode), 0);
- /*
- * Propagate the last_unlink_trans value of the deleted dir to
- * its parent directory. This is to prevent an unrecoverable
- * log tree in the case we do something like this:
- * 1) create dir foo
- * 2) create snapshot under dir foo
- * 3) delete the snapshot
- * 4) rmdir foo
- * 5) mkdir foo
- * 6) fsync foo or some file inside foo
- */
- if (last_unlink_trans >= trans->transid)
- BTRFS_I(dir)->last_unlink_trans = last_unlink_trans;
- }
out:
btrfs_end_transaction(trans);
out_notrans: