From: Tvrtko Ursulin <tursulin@ursulin.net>
To: linux-kernel@vger.kernel.org
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>,
Bart Van Assche <bart.vanassche@wdc.com>,
Hannes Reinecke <hare@suse.com>,
Johannes Thumshirn <jthumshirn@suse.de>,
Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 2/6] lib/scatterlist: Skip requesting zeroed allocations in sgl_alloc_order
Date: Wed, 7 Mar 2018 12:47:08 +0000 [thread overview]
Message-ID: <20180307124712.14963-3-tvrtko.ursulin@linux.intel.com> (raw)
In-Reply-To: <20180307124712.14963-1-tvrtko.ursulin@linux.intel.com>
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
sg_init_table will clear the allocated block so requesting zeroed memory
from the allocator is redundant.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Jens Axboe <axboe@kernel.dk>
---
lib/scatterlist.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index d61c025e38b4..9884be50a2c0 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -511,8 +511,7 @@ struct scatterlist *sgl_alloc_order(unsigned long length, unsigned int order,
nent++;
}
- sgl = kmalloc_array(nent, sizeof(struct scatterlist),
- (gfp & ~GFP_DMA) | __GFP_ZERO);
+ sgl = kmalloc_array(nent, sizeof(struct scatterlist), (gfp & ~GFP_DMA));
if (!sgl)
return NULL;
--
2.14.1
next prev parent reply other threads:[~2018-03-07 12:47 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-07 12:47 [PATCH 0/6] lib/scatterlist: Small SGL tidy Tvrtko Ursulin
2018-03-07 12:47 ` [PATCH 1/6] lib/scatterlist: Tidy types and fix overflow checking in sgl_alloc_order Tvrtko Ursulin
2018-03-07 16:10 ` Bart Van Assche
2018-03-07 17:06 ` Tvrtko Ursulin
2018-03-09 14:04 ` Tvrtko Ursulin
2018-03-07 12:47 ` Tvrtko Ursulin [this message]
2018-03-07 15:35 ` [PATCH 2/6] lib/scatterlist: Skip requesting zeroed allocations " Andy Shevchenko
2018-03-07 17:31 ` Tvrtko Ursulin
2018-03-07 12:47 ` [PATCH 3/6] lib/scatterlist: Do not leak pages when high-order allocation fails Tvrtko Ursulin
2018-03-07 16:16 ` Bart Van Assche
2018-03-07 17:06 ` Tvrtko Ursulin
2018-03-07 12:47 ` [PATCH 4/6] lib/scatterlist: Unexport some trivial wrappers Tvrtko Ursulin
2018-03-07 16:19 ` Bart Van Assche
2018-03-07 17:10 ` Tvrtko Ursulin
2018-03-07 12:47 ` [PATCH 5/6] lib/scatterlist: Drop unused sgl_free_order Tvrtko Ursulin
2018-03-07 12:47 ` [PATCH 6/6] lib/scatterlist: Drop order argument from sgl_free_n_order Tvrtko Ursulin
2018-03-07 16:23 ` Bart Van Assche
2018-03-07 17:23 ` Tvrtko Ursulin
2018-03-07 17:33 ` Bart Van Assche
2018-03-07 18:30 ` James Bottomley
2018-03-08 7:59 ` Tvrtko Ursulin
2018-03-08 15:56 ` Bart Van Assche
2018-03-08 17:06 ` Tvrtko Ursulin
2018-03-07 18:38 ` [PATCH 0/6] lib/scatterlist: Small SGL tidy Bart Van Assche
2018-03-08 8:04 ` Tvrtko Ursulin
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