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percpu: update comments to reflect that percpu allocations are always zero-filled

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Signed-off-by: Tejun Heo <[email protected]>
Reported-by: Stephane Eranian <[email protected]>
This commit is contained in:
Tejun Heo 2010-09-10 11:01:56 +02:00
commit 9329ba9704
1 changed files with 6 additions and 5 deletions
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11
mm/percpu.c
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@ -826,8 +826,8 @@ fail_unlock_mutex:
* @size: size of area to allocate in bytes
* @align: alignment of area (max PAGE_SIZE)
*
* Allocate percpu area of @size bytes aligned at @align. Might
* sleep. Might trigger writeouts.
* Allocate zero-filled percpu area of @size bytes aligned at @align.
* Might sleep. Might trigger writeouts.
*
* CONTEXT:
* Does GFP_KERNEL allocation.
@ -846,9 +846,10 @@ EXPORT_SYMBOL_GPL(__alloc_percpu);
* @size: size of area to allocate in bytes
* @align: alignment of area (max PAGE_SIZE)
*
* Allocate percpu area of @size bytes aligned at @align from reserved
* percpu area if arch has set it up; otherwise, allocation is served
* from the same dynamic area. Might sleep. Might trigger writeouts.
* Allocate zero-filled percpu area of @size bytes aligned at @align
* from reserved percpu area if arch has set it up; otherwise,
* allocation is served from the same dynamic area. Might sleep.
* Might trigger writeouts.
*
* CONTEXT:
* Does GFP_KERNEL allocation.