Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined

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From: Lin Feng <linfeng@cn.fujitsu.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: viro@zeniv.linux.org.uk, bcrl@kvack.org,
	kamezawa.hiroyu@jp.fujitsu.com, mhocko@suse.cz, hughd@google.com,
	cl@linux.com, mgorman@suse.de, minchan@kernel.org,
	isimatu.yasuaki@jp.fujitsu.com, laijs@cn.fujitsu.com,
	wency@cn.fujitsu.com, tangchen@cn.fujitsu.com,
	linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Lin Feng <linfeng@cn.fujitsu.com>
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined
Date: Mon, 03 Dec 2012 11:00:49 +0800	[thread overview]
Message-ID: <50BC15E1.8060806@cn.fujitsu.com> (raw)
In-Reply-To: <20121130024755.b5dae17e.akpm@linux-foundation.org>



On 11/30/2012 06:47 PM, Andrew Morton wrote:
> On Fri, 30 Nov 2012 18:29:30 +0800 Lin Feng <linfeng@cn.fujitsu.com> wrote:
> 
>>> add a new library function which callers can use before (or after?)
>>> calling get_user_pages[_fast]().
>> Sorry, I'm not quite understand what "library function" function means..
>> Does it means a function aids get_user_pages() or totally wraps/replaces 
>> get_user_pages(), or none of above?
> 
> "library function" is terminology for a general facility which
> the core kernel makes available to other parts of the kernel. 
> get_user_pages() is a library function, as are the functions in lib/,
> etc.  "grep EXPORT_SYMBOL ./*/*.c"
hi Andrew,

Thanks for your explanation and sorry for my ignorant question :)
As Mel said Still I can't find a way to make every guy happy..

Thanks,
linfeng

> 
> 
> 

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WARNING: multiple messages have this Message-ID (diff)

From: Lin Feng <linfeng@cn.fujitsu.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: viro@zeniv.linux.org.uk, bcrl@kvack.org,
	kamezawa.hiroyu@jp.fujitsu.com, mhocko@suse.cz, hughd@google.com,
	cl@linux.com, mgorman@suse.de, minchan@kernel.org,
	isimatu.yasuaki@jp.fujitsu.com, laijs@cn.fujitsu.com,
	wency@cn.fujitsu.com, tangchen@cn.fujitsu.com,
	linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Lin Feng <linfeng@cn.fujitsu.com>
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined
Date: Mon, 03 Dec 2012 11:00:49 +0800	[thread overview]
Message-ID: <50BC15E1.8060806@cn.fujitsu.com> (raw)
In-Reply-To: <20121130024755.b5dae17e.akpm@linux-foundation.org>



On 11/30/2012 06:47 PM, Andrew Morton wrote:
> On Fri, 30 Nov 2012 18:29:30 +0800 Lin Feng <linfeng@cn.fujitsu.com> wrote:
> 
>>> add a new library function which callers can use before (or after?)
>>> calling get_user_pages[_fast]().
>> Sorry, I'm not quite understand what "library function" function means..
>> Does it means a function aids get_user_pages() or totally wraps/replaces 
>> get_user_pages(), or none of above?
> 
> "library function" is terminology for a general facility which
> the core kernel makes available to other parts of the kernel. 
> get_user_pages() is a library function, as are the functions in lib/,
> etc.  "grep EXPORT_SYMBOL ./*/*.c"
hi Andrew,

Thanks for your explanation and sorry for my ignorant question :)
As Mel said Still I can't find a way to make every guy happy..

Thanks,
linfeng

> 
> 
> 

--
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>

WARNING: multiple messages have this Message-ID (diff)

From: Lin Feng <linfeng@cn.fujitsu.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: viro@zeniv.linux.org.uk, bcrl@kvack.org,
	kamezawa.hiroyu@jp.fujitsu.com, mhocko@suse.cz, hughd@google.com,
	cl@linux.com, mgorman@suse.de, minchan@kernel.org,
	isimatu.yasuaki@jp.fujitsu.com, laijs@cn.fujitsu.com,
	wency@cn.fujitsu.com, tangchen@cn.fujitsu.com,
	linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Lin Feng <linfeng@cn.fujitsu.com>
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined
Date: Mon, 03 Dec 2012 11:00:49 +0800	[thread overview]
Message-ID: <50BC15E1.8060806@cn.fujitsu.com> (raw)
In-Reply-To: <20121130024755.b5dae17e.akpm@linux-foundation.org>



On 11/30/2012 06:47 PM, Andrew Morton wrote:
> On Fri, 30 Nov 2012 18:29:30 +0800 Lin Feng <linfeng@cn.fujitsu.com> wrote:
> 
>>> add a new library function which callers can use before (or after?)
>>> calling get_user_pages[_fast]().
>> Sorry, I'm not quite understand what "library function" function means..
>> Does it means a function aids get_user_pages() or totally wraps/replaces 
>> get_user_pages(), or none of above?
> 
> "library function" is terminology for a general facility which
> the core kernel makes available to other parts of the kernel. 
> get_user_pages() is a library function, as are the functions in lib/,
> etc.  "grep EXPORT_SYMBOL ./*/*.c"
hi Andrew,

Thanks for your explanation and sorry for my ignorant question :)
As Mel said Still I can't find a way to make every guy happy..

Thanks,
linfeng

> 
> 
>

next prev parent reply	other threads:[~2012-12-03  3:00 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-29  6:54 [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined Lin Feng
2012-11-29  6:54 ` Lin Feng
2012-11-29  6:54 ` Lin Feng
2012-11-29 23:39 ` Andrew Morton
2012-11-29 23:39   ` Andrew Morton
2012-11-29 23:39   ` Andrew Morton
2012-11-30  0:04   ` Zach Brown
2012-11-30  0:04     ` Zach Brown
2012-11-30  0:04     ` Zach Brown
2012-11-30  3:39     ` Lin Feng
2012-11-30  3:39       ` Lin Feng
2012-11-30  3:39       ` Lin Feng
2012-11-30  3:42   ` Lin Feng
2012-11-30  3:42     ` Lin Feng
2012-11-30  5:57     ` Andrew Morton
2012-11-30  5:57       ` Andrew Morton
2012-11-30  7:01       ` Lin Feng
2012-11-30  7:01         ` Lin Feng
2012-11-30  7:55         ` Andrew Morton
2012-11-30  7:55           ` Andrew Morton
2012-11-30 10:29           ` Lin Feng
2012-11-30 10:29             ` Lin Feng
2012-11-30 10:47             ` Andrew Morton
2012-11-30 10:47               ` Andrew Morton
2012-11-30 10:47               ` Andrew Morton
2012-12-03  3:00               ` Lin Feng [this message]
2012-12-03  3:00                 ` Lin Feng
2012-12-03  3:00                 ` Lin Feng
2012-11-30 11:00           ` Mel Gorman
2012-11-30 11:00             ` Mel Gorman
2012-12-03  2:52             ` Lin Feng
2012-12-03  2:52               ` Lin Feng
2012-12-03 11:37               ` Mel Gorman
2012-12-03 11:37                 ` Mel Gorman
2012-12-03 11:37                 ` Mel Gorman
2012-11-30  7:13       ` Kamezawa Hiroyuki
2012-11-30  7:13         ` Kamezawa Hiroyuki
2012-11-30  8:00         ` Andrew Morton
2012-11-30  8:00           ` Andrew Morton
2012-11-30  8:00           ` Andrew Morton
2012-11-30 10:57   ` Mel Gorman
2012-11-30 10:57     ` Mel Gorman
2012-11-30 10:57     ` Mel Gorman
2012-11-30 15:24 ` Domenico Andreoli
2012-11-30 15:24   ` Domenico Andreoli
2012-11-30 15:24   ` Domenico Andreoli
2012-12-03  2:05   ` Lin Feng
2012-12-03  2:05     ` Lin Feng

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