[PATCH] ext4: Annotate struct ext4_xattr_inode_array with __counted_by()

[Thorsten Blum]

Add the __counted_by compiler attribute to the flexible array member
inodes to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

Remove the now obsolete comment on the count field.

Signed-off-by: Thorsten Blum <thorsten.b...@toblux.com>
---
 fs/ext4/xattr.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index bd97c4aa8177..e14fb19dc912 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -130,8 +130,8 @@ struct ext4_xattr_ibody_find {
 };
 
 struct ext4_xattr_inode_array {
-       unsigned int count;             /* # of used items in the array */
-       struct inode *inodes[];
+       unsigned int count;
+       struct inode *inodes[] __counted_by(count);
 };
 
 extern const struct xattr_handler ext4_xattr_user_handler;
-- 
2.45.2