tomoyo: replace tomoyo_round2() with kmalloc_size_roundup()

It seems tomoyo has had its own implementation of what
kmalloc_size_roundup() does today. Remove the function tomoyo_round2()
and replace it with kmalloc_size_roundup(). It provides more accurate
results and doesn't contain a while loop.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

1 files changed, 0 insertions, 44 deletions

diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index ca285f362705..a539b2cbb5c4 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -1276,50 +1276,6 @@ static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
 	return tomoyo_domain()->ns;
 }
 
-#if defined(CONFIG_SLOB)
-
-/**
- * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
- *
- * @size: Size to be rounded up.
- *
- * Returns @size.
- *
- * Since SLOB does not round up, this function simply returns @size.
- */
-static inline int tomoyo_round2(size_t size)
-{
-	return size;
-}
-
-#else
-
-/**
- * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
- *
- * @size: Size to be rounded up.
- *
- * Returns rounded size.
- *
- * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
- * (e.g.) 128 bytes.
- */
-static inline int tomoyo_round2(size_t size)
-{
-#if PAGE_SIZE == 4096
-	size_t bsize = 32;
-#else
-	size_t bsize = 64;
-#endif
-	if (!size)
-		return 0;
-	while (size > bsize)
-		bsize <<= 1;
-	return bsize;
-}
-
-#endif
-
 /**
  * list_for_each_cookie - iterate over a list with cookie.
  * @pos:        the &struct list_head to use as a loop cursor.