[LTP] ltp: vma03 fix the alginment of page size

[LTP] ltp: vma03 fix the alginment of page size

[cdong]

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Hi,
        There is a patch to fix vma03 test case,the below information is 
detail it:

        the offset the parameter of mmap2() doesn't align the page 
size,but,this parameter
        allow must be a multiple of the page size as returned by 
sysconf(_SC_PAGE_SIZE).
        meanwhile offset * 4096 must be a multiple of the system page 
size,so modify
        the input param of offset pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));

     Regards,
     Apollo

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From 6e60e9d4f27d36cdd369e7d7a046da49e3f17fd6 Mon Sep 17 00:00:00 2001
From: Chuang Dong <Chuang.Dong@windriver.com>
Date: Wed, 3 Jun 2015 13:27:53 +0800
Subject: [PATCH] ltp: vma03 fix the alginment of page size

the offset the param of mmap2() doesn't align the page size,but,
this param allow must be a multiple of the page size as returned
by sysconf(_SC_PAGE_SIZE).meanwhile offset * 4096 must be a
multiple of the system page size,so modify the input param of offset
pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));

Upstream-Status: Submitted

Signed-off-by: Chuang Dong <Chuang.Dong@windriver.com>
---
 testcases/kernel/mem/vma/vma03.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/mem/vma/vma03.c b/testcases/kernel/mem/vma/vma03.c
index ad8a7b4..a539233 100644
--- a/testcases/kernel/mem/vma/vma03.c
+++ b/testcases/kernel/mem/vma/vma03.c
@@ -85,7 +85,7 @@ int main(int argc, char *argv[])
 		if (fd == -1)
 			tst_brkm(TBROK | TERRNO, NULL, "open %s", TESTFILE);
 
-		pgoff = ULONG_MAX - 1;
+		pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));
 		map = mmap2(NULL, pgsz, PROT_READ | PROT_WRITE, MAP_PRIVATE,
 			    fd, pgoff);
 		if (map == MAP_FAILED)
-- 
1.8.5.2.233.g932f7e4


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Re: [LTP] ltp: vma03 fix the alginment of page size

[Wei, Jiangang]

Hi,
Maybe you had to fix your typo in commit message.
You can using 'set spell' to check it before pushing it. 

Regards,
Wei
On Wed, 2015-06-03 at 14:11 +0800, cdong wrote:
> Hi,
>         There is a patch to fix vma03 test case,the below information is 
> detail it:
> 
>         the offset the parameter of mmap2() doesn't align the page 
> size,but,this parameter
>         allow must be a multiple of the page size as returned by 
> sysconf(_SC_PAGE_SIZE).
>         meanwhile offset * 4096 must be a multiple of the system page 
> size,so modify
>         the input param of offset pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));
> 
>      Regards,
>      Apollo
> ------------------------------------------------------------------------------
> _______________________________________________
> Ltp-list mailing list
> Ltp-list@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/ltp-list

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