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

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From: Domenico Andreoli <cavokz@gmail.com>
To: Lin Feng <linfeng@cn.fujitsu.com>
Cc: akpm@linux-foundation.org, 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
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined
Date: Fri, 30 Nov 2012 16:24:21 +0100	[thread overview]
Message-ID: <20121130152421.GA19849@glitch> (raw)
In-Reply-To: <1354172098-5691-1-git-send-email-linfeng@cn.fujitsu.com>

On Thu, Nov 29, 2012 at 02:54:58PM +0800, Lin Feng wrote:
> Hi all,

Hi Lin,

> We encounter a "Resource temporarily unavailable" fail while trying
> to offline a memory section in a movable zone. We found that there are 
> some pages can't be migrated. The offline operation fails in function 
> migrate_page_move_mapping() returning -EAGAIN till timeout because 
> the if assertion 'page_count(page) != 1' fails.

is this something that worked before? if yes (then it's a regression)
do you know with which kernel?

Thanks,
Domenico

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

From: Domenico Andreoli <cavokz@gmail.com>
To: Lin Feng <linfeng@cn.fujitsu.com>
Cc: akpm@linux-foundation.org, 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
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined
Date: Fri, 30 Nov 2012 16:24:21 +0100	[thread overview]
Message-ID: <20121130152421.GA19849@glitch> (raw)
In-Reply-To: <1354172098-5691-1-git-send-email-linfeng@cn.fujitsu.com>

On Thu, Nov 29, 2012 at 02:54:58PM +0800, Lin Feng wrote:
> Hi all,

Hi Lin,

> We encounter a "Resource temporarily unavailable" fail while trying
> to offline a memory section in a movable zone. We found that there are 
> some pages can't be migrated. The offline operation fails in function 
> migrate_page_move_mapping() returning -EAGAIN till timeout because 
> the if assertion 'page_count(page) != 1' fails.

is this something that worked before? if yes (then it's a regression)
do you know with which kernel?

Thanks,
Domenico

--
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: Domenico Andreoli <cavokz@gmail.com>
To: Lin Feng <linfeng@cn.fujitsu.com>
Cc: akpm@linux-foundation.org, 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
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined
Date: Fri, 30 Nov 2012 16:24:21 +0100	[thread overview]
Message-ID: <20121130152421.GA19849@glitch> (raw)
In-Reply-To: <1354172098-5691-1-git-send-email-linfeng@cn.fujitsu.com>

On Thu, Nov 29, 2012 at 02:54:58PM +0800, Lin Feng wrote:
> Hi all,

Hi Lin,

> We encounter a "Resource temporarily unavailable" fail while trying
> to offline a memory section in a movable zone. We found that there are 
> some pages can't be migrated. The offline operation fails in function 
> migrate_page_move_mapping() returning -EAGAIN till timeout because 
> the if assertion 'page_count(page) != 1' fails.

is this something that worked before? if yes (then it's a regression)
do you know with which kernel?

Thanks,
Domenico

next prev parent reply	other threads:[~2012-11-30 15:24 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
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 [this message]
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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