From: Chris Mason <chris.mason@oracle.com>
To: Jan Kara <jack@suse.cz>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
"Martin J. Bligh" <mbligh@mbligh.org>,
linux-ext4@vger.kernel.org, Ying Han <yinghan@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
guichaz@gmail.com, Alex Khesin <alexk@google.com>,
Mike Waychison <mikew@google.com>,
Rohit Seth <rohitseth@google.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: ftruncate-mmap: pages are lost after writing to mmaped file.
Date: Tue, 24 Mar 2009 10:01:45 -0400 [thread overview]
Message-ID: <1237903305.17910.4.camel@think.oraclecorp.com> (raw)
In-Reply-To: <20090324132637.GA14607@duck.suse.cz>
On Tue, 2009-03-24 at 14:26 +0100, Jan Kara wrote:
> On Tue 24-03-09 13:55:10, Jan Kara wrote:
> > And one more interesting thing I don't yet fully understand - I see pages
> > having PageError() set when they are removed from page cache (and they have
> > been faulted in before). It's probably some interaction with pagecache
> > readahead...
> Argh... So the problem seems to be that get_block() occasionally returns
> ENOSPC and we then discard the dirty data (hmm, we could give at least a
> warning for that). I'm not yet sure why getblock behaves like this because
> the filesystem seems to have enough space but anyway this seems to be some
> strange fs trouble as well.
>
Ouch. Perhaps the free space is waiting on a journal commit?
-chris
--
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>
next prev parent reply other threads:[~2009-03-24 13:51 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-18 19:44 ftruncate-mmap: pages are lost after writing to mmaped file Ying Han
2009-03-18 22:11 ` Andrew Morton
2009-03-18 22:40 ` Linus Torvalds
2009-03-18 23:18 ` Ying Han
2009-03-18 23:36 ` Linus Torvalds
2009-03-18 23:54 ` Ying Han
2009-03-19 15:48 ` Nick Piggin
2009-03-19 16:16 ` Peter Zijlstra
2009-03-19 16:36 ` Nick Piggin
2009-03-19 16:20 ` Linus Torvalds
2009-03-19 16:34 ` Nick Piggin
2009-03-19 16:51 ` Linus Torvalds
2009-03-19 17:03 ` Jan Kara
2009-03-19 17:06 ` Jan Kara
2009-03-19 20:05 ` Linus Torvalds
2009-03-19 20:21 ` Linus Torvalds
2009-03-19 21:17 ` Ying Han
2009-03-19 22:16 ` Jan Kara
2009-03-19 16:46 ` Jan Kara
2009-03-24 7:44 ` Nick Piggin
2009-03-24 10:27 ` Nick Piggin
2009-03-24 10:32 ` Andrew Morton
2009-03-24 15:35 ` Nick Piggin
2009-03-26 18:29 ` Jan Kara
2009-03-26 0:03 ` Ying Han
2009-03-24 12:39 ` Jan Kara
2009-03-24 12:55 ` Jan Kara
2009-03-24 13:26 ` Jan Kara
2009-03-24 14:01 ` Chris Mason [this message]
2009-03-24 14:07 ` Jan Kara
2009-03-26 8:18 ` Aneesh Kumar K.V
2009-03-24 14:30 ` Nick Piggin
2009-03-24 14:47 ` Jan Kara
2009-03-24 14:56 ` Peter Zijlstra
2009-03-24 15:29 ` Jan Kara
2009-03-24 20:14 ` OGAWA Hirofumi
2009-03-26 8:47 ` Aneesh Kumar K.V
2009-03-26 11:37 ` Jan Kara
2009-03-26 23:02 ` Linus Torvalds
2009-03-24 15:03 ` Nick Piggin
2009-03-24 15:48 ` Jan Kara
2009-03-24 17:35 ` Jan Kara
2009-04-01 22:36 ` Ying Han
2009-04-02 10:11 ` Jan Kara
2009-04-02 11:24 ` Nick Piggin
2009-04-02 11:34 ` Jan Kara
2009-04-02 15:51 ` Nick Piggin
2009-04-02 17:44 ` Ying Han
2009-04-02 22:52 ` Ying Han
2009-04-02 23:39 ` Jan Kara
2009-04-03 0:25 ` Ying Han
2009-04-03 1:29 ` Ying Han
2009-04-03 9:41 ` Jan Kara
2009-04-03 21:34 ` Ying Han
2009-04-03 0:13 ` Ying Han
2009-03-27 20:35 ` Ying Han
2009-03-20 0:34 ` Ying Han
2009-03-20 0:49 ` Linus Torvalds
2009-03-20 7:00 ` Ying Han
2009-03-25 23:15 ` Ying Han
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1237903305.17910.4.camel@think.oraclecorp.com \
--to=chris.mason@oracle.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=alexk@google.com \
--cc=guichaz@gmail.com \
--cc=jack@suse.cz \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mbligh@mbligh.org \
--cc=mikew@google.com \
--cc=nickpiggin@yahoo.com.au \
--cc=rohitseth@google.com \
--cc=torvalds@linux-foundation.org \
--cc=yinghan@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).