Re: [PATCH] arch: uapi: asm: mman.h: Let MADV_FREE have same value for all architectures

From: Chen Gang
Date: Wed Oct 28 2015 - 04:46:02 EST


On 2015年10月28日 15:18, Minchan Kim wrote:
> Hello Chen,
>
> n Fri, Dec 05, 2014 at 06:58:29AM +0800, Chen Gang wrote:
>> For uapi, need try to let all macros have same value, and MADV_FREE is
>> added into main branch recently, so need redefine MADV_FREE for it.
>>
>> At present, '8' can be shared with all architectures, so redefine it to
>> '8'.
>
> Recently, I cleaned MADV_FREE patchset up and will send uptodate version
> to Andrew to replace old implementation in mmotm tree which is not a
> linus's tree so this change shouldn't break anyting.
>
> When I look at status of this patch, it seems Andrew missed it
> so I want to include this patch when I respin if you don't mind.
>
> Is it okay for you?
>

For me, it is OK. And thank you for your work. :-)


> Thanks.
>
>>
>> Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
>> ---
>> arch/alpha/include/uapi/asm/mman.h | 2 +-
>> arch/mips/include/uapi/asm/mman.h | 2 +-
>> arch/parisc/include/uapi/asm/mman.h | 2 +-
>> arch/xtensa/include/uapi/asm/mman.h | 2 +-
>> include/uapi/asm-generic/mman-common.h | 2 +-
>> 5 files changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/arch/alpha/include/uapi/asm/mman.h b/arch/alpha/include/uapi/asm/mman.h
>> index 836fbd4..0b8a5de 100644
>> --- a/arch/alpha/include/uapi/asm/mman.h
>> +++ b/arch/alpha/include/uapi/asm/mman.h
>> @@ -44,9 +44,9 @@
>> #define MADV_WILLNEED 3 /* will need these pages */
>> #define MADV_SPACEAVAIL 5 /* ensure resources are available */
>> #define MADV_DONTNEED 6 /* don't need these pages */
>> -#define MADV_FREE 7 /* free pages only if memory pressure */
>>
>> /* common/generic parameters */
>> +#define MADV_FREE 8 /* free pages only if memory pressure */
>> #define MADV_REMOVE 9 /* remove these pages & resources */
>> #define MADV_DONTFORK 10 /* don't inherit across fork */
>> #define MADV_DOFORK 11 /* do inherit across fork */
>> diff --git a/arch/mips/include/uapi/asm/mman.h b/arch/mips/include/uapi/asm/mman.h
>> index 106e741..d247f54 100644
>> --- a/arch/mips/include/uapi/asm/mman.h
>> +++ b/arch/mips/include/uapi/asm/mman.h
>> @@ -67,9 +67,9 @@
>> #define MADV_SEQUENTIAL 2 /* expect sequential page references */
>> #define MADV_WILLNEED 3 /* will need these pages */
>> #define MADV_DONTNEED 4 /* don't need these pages */
>> -#define MADV_FREE 5 /* free pages only if memory pressure */
>>
>> /* common parameters: try to keep these consistent across architectures */
>> +#define MADV_FREE 8 /* free pages only if memory pressure */
>> #define MADV_REMOVE 9 /* remove these pages & resources */
>> #define MADV_DONTFORK 10 /* don't inherit across fork */
>> #define MADV_DOFORK 11 /* do inherit across fork */
>> diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/uapi/asm/mman.h
>> index 6cb8db7..700d83f 100644
>> --- a/arch/parisc/include/uapi/asm/mman.h
>> +++ b/arch/parisc/include/uapi/asm/mman.h
>> @@ -40,9 +40,9 @@
>> #define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
>> #define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */
>> #define MADV_VPS_INHERIT 7 /* Inherit parents page size */
>> -#define MADV_FREE 8 /* free pages only if memory pressure */
>>
>> /* common/generic parameters */
>> +#define MADV_FREE 8 /* free pages only if memory pressure */
>> #define MADV_REMOVE 9 /* remove these pages & resources */
>> #define MADV_DONTFORK 10 /* don't inherit across fork */
>> #define MADV_DOFORK 11 /* do inherit across fork */
>> diff --git a/arch/xtensa/include/uapi/asm/mman.h b/arch/xtensa/include/uapi/asm/mman.h
>> index 1b19f25..77eaca4 100644
>> --- a/arch/xtensa/include/uapi/asm/mman.h
>> +++ b/arch/xtensa/include/uapi/asm/mman.h
>> @@ -80,9 +80,9 @@
>> #define MADV_SEQUENTIAL 2 /* expect sequential page references */
>> #define MADV_WILLNEED 3 /* will need these pages */
>> #define MADV_DONTNEED 4 /* don't need these pages */
>> -#define MADV_FREE 5 /* free pages only if memory pressure */
>>
>> /* common parameters: try to keep these consistent across architectures */
>> +#define MADV_FREE 8 /* free pages only if memory pressure */
>> #define MADV_REMOVE 9 /* remove these pages & resources */
>> #define MADV_DONTFORK 10 /* don't inherit across fork */
>> #define MADV_DOFORK 11 /* do inherit across fork */
>> diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
>> index 7a94102..8695959 100644
>> --- a/include/uapi/asm-generic/mman-common.h
>> +++ b/include/uapi/asm-generic/mman-common.h
>> @@ -34,9 +34,9 @@
>> #define MADV_SEQUENTIAL 2 /* expect sequential page references */
>> #define MADV_WILLNEED 3 /* will need these pages */
>> #define MADV_DONTNEED 4 /* don't need these pages */
>> -#define MADV_FREE 5 /* free pages only if memory pressure */
>>
>> /* common parameters: try to keep these consistent across architectures */
>> +#define MADV_FREE 8 /* free pages only if memory pressure */
>> #define MADV_REMOVE 9 /* remove these pages & resources */
>> #define MADV_DONTFORK 10 /* don't inherit across fork */
>> #define MADV_DOFORK 11 /* do inherit across fork */
>> --
>> 1.9.3

--
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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