lkml.org 
[lkml]   [2018]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/3] slab: use logical instead of bitwise operation in kmalloc_type()
Date
From: Johannes Berg <johannes.berg@intel.com>

The operation here really is more logical than bitwise, even if
due to the setup the bitwise operation works fine. However, this
causes a complaint from sparse that the operation doesn't really
make sense due to the not.

Use a logical and instead of bitwise.

In my (somewhat unscientific) test this caused no differences in
the generated code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/linux/slab.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 918f374e7156..d395c7366312 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -329,7 +329,7 @@ static __always_inline enum kmalloc_cache_type kmalloc_type(gfp_t flags)
* If an allocation is both __GFP_DMA and __GFP_RECLAIMABLE, return
* KMALLOC_DMA and effectively ignore __GFP_RECLAIMABLE
*/
- return type_dma + (is_reclaimable & !is_dma) * KMALLOC_RECLAIM;
+ return type_dma + (is_reclaimable && !is_dma) * KMALLOC_RECLAIM;
}

/*
--
2.17.2
\
 
 \ /
  Last update: 2018-11-09 10:35    [W:0.175 / U:0.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site