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authorChengguang Xu <cgxu519@gmx.com>2018-06-27 12:16:35 +0800
committerDavid Sterba <dsterba@suse.com>2018-08-06 13:12:40 +0200
commit7e35eab958e30d15743b1f9928d15b559a6e432d (patch)
tree30c1696236fb3b1707a026bcdae8213633f90bed /fs/btrfs/acl.c
parentab3629ed86ec43e7d95cf087d0b5a9d403fcd822 (diff)
downloadlinux-7e35eab958e30d15743b1f9928d15b559a6e432d.tar.bz2
btrfs: replace empty string with NULL when getting attribute length in btrfs_get_acl
In btrfs_get_acl() the first call of btr_getxattr() is for getting the length of attribute, the value buffer is never used in this case. So it's better to replace empty string with NULL. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/acl.c')
-rw-r--r--fs/btrfs/acl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 60f83a3bd77c..83fdd80c51c6 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -33,7 +33,7 @@ struct posix_acl *btrfs_get_acl(struct inode *inode, int type)
return ERR_PTR(-EINVAL);
}
- size = btrfs_getxattr(inode, name, "", 0);
+ size = btrfs_getxattr(inode, name, NULL, 0);
if (size > 0) {
value = kzalloc(size, GFP_KERNEL);
if (!value)