From: "Toralf Förster" <toralf.foerster@gmx.de>
To: Jan Kara <jack@suse.cz>
Cc: UML devel <user-mode-linux-devel@lists.sourceforge.net>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: why does index in truncate_inode_pages_range() grows so much ?
Date: Fri, 13 Dec 2013 10:52:20 +0100 [thread overview]
Message-ID: <52AAD8D4.2060807@gmx.de> (raw)
In-Reply-To: <20131211202639.GE1163@quack.suse.cz>
-----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.
- --
MfG/Sincerely
Toralf Förster
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WARNING: multiple messages have this Message-ID (diff)
From: "Toralf Förster" <toralf.foerster@gmx.de>
To: Jan Kara <jack@suse.cz>
Cc: UML devel <user-mode-linux-devel@lists.sourceforge.net>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: why does index in truncate_inode_pages_range() grows so much ?
Date: Fri, 13 Dec 2013 10:52:20 +0100 [thread overview]
Message-ID: <52AAD8D4.2060807@gmx.de> (raw)
In-Reply-To: <20131211202639.GE1163@quack.suse.cz>
-----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.
- --
MfG/Sincerely
Toralf FA?rster
pgp finger print:1A37 6F99 4A9D 026F 13E2 4DCF C4EA CDDE 0076 E94E
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Version: GnuPG v2.0.22 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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WARNING: multiple messages have this Message-ID (diff)
From: "Toralf Förster" <toralf.foerster@gmx.de>
To: Jan Kara <jack@suse.cz>
Cc: UML devel <user-mode-linux-devel@lists.sourceforge.net>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: why does index in truncate_inode_pages_range() grows so much ?
Date: Fri, 13 Dec 2013 10:52:20 +0100 [thread overview]
Message-ID: <52AAD8D4.2060807@gmx.de> (raw)
In-Reply-To: <20131211202639.GE1163@quack.suse.cz>
-----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.
- --
MfG/Sincerely
Toralf Förster
pgp finger print:1A37 6F99 4A9D 026F 13E2 4DCF C4EA CDDE 0076 E94E
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Version: GnuPG v2.0.22 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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next prev parent reply other threads:[~2013-12-13 9:52 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 [this message]
2013-12-13 9:52 ` Toralf Förster
2013-12-13 9:52 ` Toralf Förster
2013-12-13 10:51 ` [uml-devel] " Richard Weinberger
2013-12-13 10:51 ` 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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