Re: [LTP] [PATCH 2/2] mm/vma01: create a bighole

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 06/25/2012 03:33 PM, Caspar Zhang wrote:
> 
> There are two mmaps in vma01, sometimes first mmap succeeds while
> second mmap might fail due to a small hole (3*ps <= hole < 6*ps)
> produced by /etc/ld.so.cache and /etc/libc.so.6, I created a big hole
> and then munmap it to make sure both allocations can succeed.

Can you share how to produce the hole and make the previous case FAIL?

Thanks,
Wanlong Gao

> 
>     |-3*ps-|
> 	|------|------|------| hole
> 	t      p
> 	|======|------|        top-down alloc
> 	       |------|======| bottom-up alloc
> 
> Signed-off-by: Caspar Zhang <caspar@casparzhang.com>
> ---
>  testcases/kernel/mem/vma/vma01.c |   25 ++++++++++++++++++++++++-
>  1 files changed, 24 insertions(+), 1 deletions(-)
> 
> 
> 
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