* [PATCH] mm: do_mincore() cleanup
@ 2013-12-05 8:52 Jianguo Wu
2013-12-05 14:39 ` Naoya Horiguchi
0 siblings, 1 reply; 3+ messages in thread
From: Jianguo Wu @ 2013-12-05 8:52 UTC (permalink / raw)
To: Andrew Morton
Cc: Johannes Weiner, Minchan Kim, linux-mm, linux-kernel, qiuxishi
Two cleanups:
1. remove redundant codes for hugetlb pages.
2. end = pmd_addr_end(addr, end) restricts [addr, end) within PMD_SIZE,
this may increase do_mincore() calls, remove it.
Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
---
mm/mincore.c | 7 -------
1 files changed, 0 insertions(+), 7 deletions(-)
diff --git a/mm/mincore.c b/mm/mincore.c
index da2be56..1016233 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -225,13 +225,6 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v
end = min(vma->vm_end, addr + (pages << PAGE_SHIFT));
- if (is_vm_hugetlb_page(vma)) {
- mincore_hugetlb_page_range(vma, addr, end, vec);
- return (end - addr) >> PAGE_SHIFT;
- }
-
- end = pmd_addr_end(addr, end);
-
if (is_vm_hugetlb_page(vma))
mincore_hugetlb_page_range(vma, addr, end, vec);
else
--
1.7.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] mm: do_mincore() cleanup
2013-12-05 8:52 [PATCH] mm: do_mincore() cleanup Jianguo Wu
@ 2013-12-05 14:39 ` Naoya Horiguchi
2013-12-06 1:19 ` Jianguo Wu
0 siblings, 1 reply; 3+ messages in thread
From: Naoya Horiguchi @ 2013-12-05 14:39 UTC (permalink / raw)
To: Jianguo Wu
Cc: Andrew Morton, Johannes Weiner, Minchan Kim, linux-mm,
linux-kernel, qiuxishi
On Thu, Dec 05, 2013 at 04:52:52PM +0800, Jianguo Wu wrote:
> Two cleanups:
> 1. remove redundant codes for hugetlb pages.
> 2. end = pmd_addr_end(addr, end) restricts [addr, end) within PMD_SIZE,
> this may increase do_mincore() calls, remove it.
>
> Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Thanks!
Naoya
> ---
> mm/mincore.c | 7 -------
> 1 files changed, 0 insertions(+), 7 deletions(-)
>
> diff --git a/mm/mincore.c b/mm/mincore.c
> index da2be56..1016233 100644
> --- a/mm/mincore.c
> +++ b/mm/mincore.c
> @@ -225,13 +225,6 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v
>
> end = min(vma->vm_end, addr + (pages << PAGE_SHIFT));
>
> - if (is_vm_hugetlb_page(vma)) {
> - mincore_hugetlb_page_range(vma, addr, end, vec);
> - return (end - addr) >> PAGE_SHIFT;
> - }
> -
> - end = pmd_addr_end(addr, end);
> -
> if (is_vm_hugetlb_page(vma))
> mincore_hugetlb_page_range(vma, addr, end, vec);
> else
> --
> 1.7.1
>
>
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@kvack.org. For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] mm: do_mincore() cleanup
2013-12-05 14:39 ` Naoya Horiguchi
@ 2013-12-06 1:19 ` Jianguo Wu
0 siblings, 0 replies; 3+ messages in thread
From: Jianguo Wu @ 2013-12-06 1:19 UTC (permalink / raw)
To: Naoya Horiguchi
Cc: Andrew Morton, Johannes Weiner, Minchan Kim, linux-mm,
linux-kernel, qiuxishi
On 2013/12/5 22:39, Naoya Horiguchi wrote:
> On Thu, Dec 05, 2013 at 04:52:52PM +0800, Jianguo Wu wrote:
>> Two cleanups:
>> 1. remove redundant codes for hugetlb pages.
>> 2. end = pmd_addr_end(addr, end) restricts [addr, end) within PMD_SIZE,
>> this may increase do_mincore() calls, remove it.
>>
>> Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
>
> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Hi Naoya, thanks for your review!
Jianguo Wu
>
> Thanks!
>
> Naoya
>
>> ---
>> mm/mincore.c | 7 -------
>> 1 files changed, 0 insertions(+), 7 deletions(-)
>>
>> diff --git a/mm/mincore.c b/mm/mincore.c
>> index da2be56..1016233 100644
>> --- a/mm/mincore.c
>> +++ b/mm/mincore.c
>> @@ -225,13 +225,6 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v
>>
>> end = min(vma->vm_end, addr + (pages << PAGE_SHIFT));
>>
>> - if (is_vm_hugetlb_page(vma)) {
>> - mincore_hugetlb_page_range(vma, addr, end, vec);
>> - return (end - addr) >> PAGE_SHIFT;
>> - }
>> -
>> - end = pmd_addr_end(addr, end);
>> -
>> if (is_vm_hugetlb_page(vma))
>> mincore_hugetlb_page_range(vma, addr, end, vec);
>> else
>> --
>> 1.7.1
>>
>>
>> --
>> To unsubscribe, send a message with 'unsubscribe linux-mm' in
>> the body to majordomo@kvack.org. For more info on Linux MM,
>> see: http://www.linux-mm.org/ .
>> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
>>
>
> .
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-12-05 14:39 ` Naoya Horiguchi
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