fs: btrfs: inode: Allow next_length() to return value > BTRFS_NAME_LEN
All existing next_length() caller handles return value > BTRFS_NAME_LEN,
so there is no need to do BTRFS_NAME_LEN check in next_length().
But still, we want to exit early if we're beyond BTRFS_NAME_LEN, so this
patch makes next_length() exit as soon as we're beyond BTRFS_NAME_LEN.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 007cf32..da2a5e9 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -217,8 +217,12 @@
static inline int next_length(const char *path)
{
int res = 0;
- while (*path != '\0' && *path != '/' && res <= BTRFS_NAME_LEN)
- ++res, ++path;
+ while (*path != '\0' && *path != '/') {
+ ++res;
+ ++path;
+ if (res > BTRFS_NAME_LEN)
+ break;
+ }
return res;
}