kfifo: fix inaccurate comment

Martin Kelly · Jiri Kosina · commit 75a24b822d38 · 2018-03-27T11:15:42.000+02:00
The comment in __kfifo_alloc says we round down, but we actually round
up, so correct it.

Signed-off-by: Martin Kelly &lt;mkelly@xevo.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
diff --git a/lib/kfifo.c b/lib/kfifo.c
@@ -39,7 +39,7 @@ int __kfifo_alloc(struct __kfifo *fifo, unsigned int size,
 		size_t esize, gfp_t gfp_mask)
 {
 	/*
-	 * round down to the next power of 2, since our 'let the indices
+	 * round up to the next power of 2, since our 'let the indices
 	 * wrap' technique works only in this case.
 	 */
 	size = roundup_pow_of_two(size);

Original file line number	Diff line number	Diff line change
`@@ -39,7 +39,7 @@ int __kfifo_alloc(struct __kfifo *fifo, unsigned int size,`
`39`	`39`	`size_t esize, gfp_t gfp_mask)`
`40`	`40`	`{`
`41`	`41`	`/*`
`42`		`- * round down to the next power of 2, since our 'let the indices`
	`42`	`+ * round up to the next power of 2, since our 'let the indices`
`43`	`43`	`* wrap' technique works only in this case.`
`44`	`44`	`*/`
`45`	`45`	`size = roundup_pow_of_two(size);`