From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Ryan Finnie" <ryan@finnie.org>
Cc: "Erez Zadok" <ezk@cs.sunysb.edu>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
"Colin Watson" <cjwatson@ubuntu.com>
Subject: Re: msync(2) bug(?), returns AOP_WRITEPAGE_ACTIVATE to userland
Date: Mon, 8 Oct 2007 14:18:39 +0300 [thread overview]
Message-ID: <84144f020710080418r37639efcx495bdb199f7540c2@mail.gmail.com> (raw)
In-Reply-To: <cfa94dc20710071858l71ba6115p716d24f1bbcce1c@mail.gmail.com>
Hi Ryan,
On 10/8/07, Ryan Finnie <ryan@finnie.org> wrote:
> Doesn't appear to be enough. I can't figure out why (since it appears
> write_cache_pages bubbles up directly to sys_msync), but with that
> patch applied, in my test case[1], msync returns -1 EIO. However,
> with the exact same kernel without that patch applied, msync returns
> 524288 (AOP_WRITEPAGE_ACTIVATE). But as your patch specifically flips
> 524288 to 0, I can't figure out how it eventually returns -1 EIO.
>
> [1] "apt-get check" on a unionfs2 mount backed by tmpfs over cdrom,
> standard livecd setup
You have swap device disabled, right? If so, I can't see any reason
why msync(2) on tmpfs would return -EIO. Can you please send a strace
log for your test case?
Pekka
next prev parent reply other threads:[~2007-10-08 11:18 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-07 19:58 msync(2) bug(?), returns AOP_WRITEPAGE_ACTIVATE to userland Pekka J Enberg
2007-10-08 1:58 ` Ryan Finnie
2007-10-08 11:18 ` Pekka Enberg [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-10-07 19:20 Erez Zadok
2007-10-11 21:47 ` Andrew Morton
2007-10-11 22:12 ` Ryan Finnie
2007-10-12 0:38 ` Hugh Dickins
2007-10-12 21:45 ` Pekka Enberg
2007-10-14 8:44 ` Hugh Dickins
2007-10-14 17:09 ` Pekka Enberg
2007-10-14 17:23 ` Erez Zadok
2007-10-14 17:50 ` Pekka J Enberg
2007-10-14 22:32 ` Erez Zadok
2007-10-15 11:47 ` Pekka Enberg
2007-10-16 18:02 ` Erez Zadok
2007-10-22 20:16 ` Hugh Dickins
2007-10-22 20:48 ` Pekka Enberg
2007-10-25 15:36 ` Hugh Dickins
2007-10-25 16:44 ` Erez Zadok
2007-10-25 18:23 ` Hugh Dickins
2007-10-26 2:00 ` Neil Brown
2007-10-26 8:09 ` Pekka Enberg
2007-10-26 11:26 ` Hugh Dickins
2007-10-26 8:05 ` Pekka Enberg
2007-10-22 21:04 ` Erez Zadok
2007-10-25 16:40 ` Hugh Dickins
2007-10-22 20:01 ` Hugh Dickins
2007-10-22 20:40 ` Pekka Enberg
2007-10-22 19:42 ` Hugh Dickins
2007-10-22 21:38 ` Erez Zadok
2007-10-25 18:03 ` Hugh Dickins
2007-10-27 20:47 ` Erez Zadok
2007-10-28 20:23 ` Erez Zadok
2007-10-29 20:33 ` Hugh Dickins
2007-10-31 23:53 ` Erez Zadok
2007-11-05 15:40 ` Hugh Dickins
2007-11-05 16:38 ` Dave Hansen
2007-11-05 18:57 ` Hugh Dickins
2007-11-09 2:47 ` Erez Zadok
2007-11-09 6:05 ` Erez Zadok
2007-11-12 5:41 ` Hugh Dickins
2007-11-12 17:01 ` Hugh Dickins
2007-11-13 10:18 ` Erez Zadok
2007-11-17 21:24 ` Hugh Dickins
2007-11-20 1:30 ` Erez Zadok
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