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Btrfs: do not ignore errors from btrfs_lookup_xattr in do_setxattr 

The return value from btrfs_lookup_xattr() can be a pointer encoding an
error, therefore deal with it. This fixes commit 5f5bc6b1e2
("Btrfs: make xattr replace operations atomic").

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Filipe Manana 2015-02-23 19:50:49 +00:00 committed by Chris Mason
parent 5dfe2be7ea
commit 5cdf83edb8
1 changed files with 6 additions and 2 deletions
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8
fs/btrfs/xattr.c
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@ -111,6 +111,8 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
name, name_len, -1);
if (!di && (flags & XATTR_REPLACE))
ret = -ENODATA;
else if (IS_ERR(di))
ret = PTR_ERR(di);
else if (di)
ret = btrfs_delete_one_dir_name(trans, root, path, di);
goto out;
@ -127,10 +129,12 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
ASSERT(mutex_is_locked(&inode->i_mutex));
di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode),
name, name_len, 0);
if (!di) {
if (!di)
ret = -ENODATA;
else if (IS_ERR(di))
ret = PTR_ERR(di);
if (ret)
goto out;
}
btrfs_release_path(path);
di = NULL;
}