From: Shaya Potter <spotter@cs.columbia.edu>
To: Matthew Wilcox <willy@debian.org>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: up/down semaphores in writepage()?
Date: Fri, 30 Apr 2004 09:36:13 -0400 [thread overview]
Message-ID: <1083332127.1924.41.camel@zaphod> (raw)
In-Reply-To: <20040430114242.GR22558@parcelfarce.linux.theplanet.co.uk>
On Fri, 2004-04-30 at 12:42 +0100, Matthew Wilcox wrote:
> On Thu, Apr 29, 2004 at 05:13:18PM -0400, Shaya Potter wrote:
> > Is that allowed? My guess is yes, but sort of gut without any firm
> > belief.
>
> see Documentation/filesystems/Locking ...
>
> locking rules:
> All except set_page_dirty may block
>
> BKL PageLocked(page)
> writepage: no yes, unlocks (see below)
thanks! needed that!
prev parent reply other threads:[~2004-04-30 13:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-29 21:13 up/down semaphores in writepage()? Shaya Potter
2004-04-30 11:42 ` Matthew Wilcox
2004-04-30 13:36 ` Shaya Potter [this message]
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