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 <cgxu...@gmx.com>
Reviewed-by: Nikolay Borisov <nbori...@suse.com>
---
v4:
- Split patch to series.
v3:
- Fix some toher bad practices.
- Add more information to commit log.
v2:
- Avoid errno overriding instead of print error message in error case.
- Chagne commit log for better understanding.
fs/btrfs/acl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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)
--
2.17.1
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