hash_string: Fix zero-length case for !DCACHE_WORD_ACCESS

The self-test was updated to cover zero-length strings; the function needs to be updated, too. Reported-by: Geert Uytterhoeven <[email protected]> Signed-off-by: George Spelvin <[email protected]> Fixes: fcfd2fb ("fs/namei.c: Add hashlen_string() function") Signed-off-by: Linus Torvalds <[email protected]>
akeromi · May 29, 2016 · e0ab7af · e0ab7af
1 parent f2a031b
commit e0ab7af
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/fs/namei.c b/fs/namei.c
@@ -1968,11 +1968,11 @@ u64 hashlen_string(const char *name)
 	unsigned long len = 0, c;
 
 	c = (unsigned char)*name;
-	do {
+	while (c) {
 		len++;
 		hash = partial_name_hash(c, hash);
 		c = (unsigned char)name[len];
-	} while (c);
+	}
 	return hashlen_create(end_name_hash(hash), len);
 }
 EXPORT_SYMBOL(hashlen_string);