From: Richard Weinberger <richard.weinberger@gmail.com>
To: "Toralf Förster" <toralf.foerster@gmx.de>
Cc: Jan Kara <jack@suse.cz>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
UML devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] why does index in truncate_inode_pages_range() grows so much ?
Date: Fri, 13 Dec 2013 11:51:02 +0100 [thread overview]
Message-ID: <CAFLxGvy16wv0m4D+ydmqbksUu9CaEaDtGdtnk1YHa56jAU+SEA@mail.gmail.com> (raw)
In-Reply-To: <52AAD8D4.2060807@gmx.de>
On Fri, Dec 13, 2013 at 10:52 AM, Toralf Förster <toralf.foerster@gmx.de> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> On 12/11/2013 09:26 PM, Jan Kara wrote:
>> Thanks! So this works more or less as expected - trinity issued a
>> read at absurdly high offset so we created pagecache page a that
>> offset and tried to read data into it. That failed. We left the
>> page in the pagecache where it was for reclaim to reclaim it when
>> free pages are needed. Everything works as designed except we could
>> possibly argue that it's not the most efficient way to use
>> pages...
>>
>> Patch 'vfs: fix a bug when we do some dio reads with append dio
>> writes' (http://www.spinics.net/lists/linux-fsdevel/msg70899.html)
>> should actually change the situation and we won't unnecessarily
>> cache these pages.
>>
> confirmed - applied to latest git tree of Linus I helps.
Good to know! :-)
--
Thanks,
//richard
WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard.weinberger@gmail.com>
To: "Toralf Förster" <toralf.foerster@gmx.de>
Cc: Jan Kara <jack@suse.cz>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
UML devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] why does index in truncate_inode_pages_range() grows so much ?
Date: Fri, 13 Dec 2013 11:51:02 +0100 [thread overview]
Message-ID: <CAFLxGvy16wv0m4D+ydmqbksUu9CaEaDtGdtnk1YHa56jAU+SEA@mail.gmail.com> (raw)
In-Reply-To: <52AAD8D4.2060807@gmx.de>
On Fri, Dec 13, 2013 at 10:52 AM, Toralf Förster <toralf.foerster@gmx.de> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> On 12/11/2013 09:26 PM, Jan Kara wrote:
>> Thanks! So this works more or less as expected - trinity issued a
>> read at absurdly high offset so we created pagecache page a that
>> offset and tried to read data into it. That failed. We left the
>> page in the pagecache where it was for reclaim to reclaim it when
>> free pages are needed. Everything works as designed except we could
>> possibly argue that it's not the most efficient way to use
>> pages...
>>
>> Patch 'vfs: fix a bug when we do some dio reads with append dio
>> writes' (http://www.spinics.net/lists/linux-fsdevel/msg70899.html)
>> should actually change the situation and we won't unnecessarily
>> cache these pages.
>>
> confirmed - applied to latest git tree of Linus I helps.
Good to know! :-)
--
Thanks,
//richard
--
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WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard.weinberger@gmail.com>
To: "Toralf Förster" <toralf.foerster@gmx.de>
Cc: Jan Kara <jack@suse.cz>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
UML devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] why does index in truncate_inode_pages_range() grows so much ?
Date: Fri, 13 Dec 2013 11:51:02 +0100 [thread overview]
Message-ID: <CAFLxGvy16wv0m4D+ydmqbksUu9CaEaDtGdtnk1YHa56jAU+SEA@mail.gmail.com> (raw)
In-Reply-To: <52AAD8D4.2060807@gmx.de>
On Fri, Dec 13, 2013 at 10:52 AM, Toralf Förster <toralf.foerster@gmx.de> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> On 12/11/2013 09:26 PM, Jan Kara wrote:
>> Thanks! So this works more or less as expected - trinity issued a
>> read at absurdly high offset so we created pagecache page a that
>> offset and tried to read data into it. That failed. We left the
>> page in the pagecache where it was for reclaim to reclaim it when
>> free pages are needed. Everything works as designed except we could
>> possibly argue that it's not the most efficient way to use
>> pages...
>>
>> Patch 'vfs: fix a bug when we do some dio reads with append dio
>> writes' (http://www.spinics.net/lists/linux-fsdevel/msg70899.html)
>> should actually change the situation and we won't unnecessarily
>> cache these pages.
>>
> confirmed - applied to latest git tree of Linus I helps.
Good to know! :-)
--
Thanks,
//richard
--
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next prev parent reply other threads:[~2013-12-13 10:51 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-24 15:14 why does index in truncate_inode_pages_range() grows so much ? Toralf Förster
2013-11-24 15:14 ` [uml-devel] " Toralf Förster
2013-11-25 13:55 ` stian
2013-12-03 14:02 ` Jan Kara
2013-12-03 14:02 ` Jan Kara
2013-12-03 19:43 ` Toralf Förster
2013-12-03 19:43 ` Toralf Förster
2013-12-03 23:00 ` Jan Kara
2013-12-03 23:00 ` Jan Kara
2013-12-03 23:00 ` Jan Kara
2013-12-04 13:06 ` Jan Kara
2013-12-04 13:06 ` [uml-devel] " Jan Kara
2013-12-04 13:06 ` Jan Kara
2013-12-07 18:06 ` Toralf Förster
2013-12-07 18:06 ` Toralf Förster
2013-12-07 18:06 ` Toralf Förster
2013-12-11 20:26 ` Jan Kara
2013-12-11 20:26 ` [uml-devel] " Jan Kara
2013-12-11 20:26 ` Jan Kara
2013-12-13 9:52 ` Toralf Förster
2013-12-13 9:52 ` Toralf Förster
2013-12-13 9:52 ` Toralf Förster
2013-12-13 10:51 ` Richard Weinberger [this message]
2013-12-13 10:51 ` [uml-devel] " Richard Weinberger
2013-12-13 10:51 ` Richard Weinberger
2013-12-13 13:01 ` Toralf Förster
2013-12-13 13:01 ` Toralf Förster
2013-12-13 13:01 ` Toralf Förster
2013-12-13 19:10 ` Jan Kara
2013-12-13 19:10 ` Jan Kara
2013-12-13 19:10 ` Jan Kara
2013-12-05 23:23 ` Toralf Förster
2013-12-05 23:23 ` Toralf Förster
2013-12-05 23:23 ` Toralf Förster
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