Re: [LTP] [PATCH v6 1/2] mem/lib: add vm tunable file read/write/check func

[Caspar Zhang <caspar@casparzhang.com>]

On 11/15/2011 09:14 PM, Zhouping Liu wrote:
> hi, Cyril & Garrett
> v5 -> v6: updated the sscanf() function in read_meminfo() in order to avoid buffer overflow.
> 
> please feel free to comment the patch.
> BTW: you would miss the patch.
> 
> There are several vm tunable files under /proc/sys/vm, I will compose
> some cases for testing the basic functions of them. This patch is adding
> the read/write/check functions to mem lib so that I can include them in
> my testcases.
> 
> set_sys_tune():   set a long long integer value to a vm tunable file.
> get_sys_tune():   get a long long integer value from a vm tunable file.
> check_sys_tune(): check to confirm the value in tunable file meets our
>                   expectation.
> read_meminfo():   read the special value from /proc/meminfo.
> 
> Since most of the values in vm tunable files contain only single
> integer, the functions I added only read/write long long values for now.
> For those files not storing single interger (e.g. lowmem_reserve_ratio),
> these functions will not be used in the case.
> 
> Signed-off-by: Zhouping Liu <zliu@redhat.com>

Reviewed-by: Caspar Zhang <caspar@casparzhang.com>

> ---
>  runtest/mm                         |    7 +++
>  testcases/kernel/mem/include/mem.h |    7 +++
>  testcases/kernel/mem/lib/mem.c     |   84 +++++++++++++++++++++++++++++++++++-
>  3 files changed, 97 insertions(+), 1 deletions(-)

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