unimore/kernel-hacking-2024-linux-steffo
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xen-blkfront: replace kmalloc and then memcpy with kmemdup

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The benefits are:
* code is cleaner
* kmemdup adds additional debugging info useful for tracking the real
place where memory was allocated (CONFIG_DEBUG_SLAB).

Signed-off-by: Mihnea Dobrescu-Balaur <mihneadb@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Mihnea Dobrescu-Balaur 2013-03-11 13:23:36 +02:00 committed by Konrad Rzeszutek Wilk
parent 0e5e098ac2
commit 29d0b218c8
1 changed files with 1 additions and 2 deletions
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3
drivers/block/xen-blkfront.c
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@ -1203,11 +1203,10 @@ static int blkif_recover(struct blkfront_info *info)
int j;
/* Stage 1: Make a safe copy of the shadow state. */
copy = kmalloc(sizeof(info->shadow),
copy = kmemdup(info->shadow, sizeof(info->shadow),
GFP_NOIO | __GFP_REPEAT | __GFP_HIGH);
if (!copy)
return -ENOMEM;
memcpy(copy, info->shadow, sizeof(info->shadow));
/* Stage 2: Set up free list. */
memset(&info->shadow, 0, sizeof(info->shadow));