linux-kernel - [PATCH] slab: fix 'dubious: x & !y' warning from Sparse

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Date:   Fri, 16 Nov 2018 14:40:29 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] slab: fix 'dubious: x & !y' warning from Sparse

Sparse reports:
./include/linux/slab.h:332:43: warning: dubious: x & !y

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.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 918f374..d395c73 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;
 }
 
 /*
-- 
2.7.4