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From: David Howells <dhowells@redhat.com>
To: "Pekka Enberg" <penberg@cs.helsinki.fi>
Cc: "Phillip Hellewell" <phillip@hellewell.homeip.net>,
	"Andrew Morton" <akpm@osdl.org>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	viro@ftp.linux.org.uk, mike@halcrow.us, mhalcrow@us.ibm.com,
	mcthomps@us.ibm.com, toml@us.ibm.com, yoder1@us.ibm.com,
	"James Morris" <jmorris@namei.org>,
	"Stephen C. Tweedie" <sct@redhat.com>,
	"Erez Zadok" <ezk@cs.sunysb.edu>,
	"David Howells" <dhowells@redhat.com>
Subject: Re: [PATCH 10/13: eCryptfs] Mmap operations
Date: Thu, 04 May 2006 22:43:23 +0100	[thread overview]
Message-ID: <23514.1146779003@warthog.cambridge.redhat.com> (raw)
In-Reply-To: <84144f020605040813q29fcddcr1c846d27cf156432@mail.gmail.com>

Pekka Enberg <penberg@cs.helsinki.fi> wrote:

> > +               rc = mapping->a_ops->readpage(file, page);
> 
> What's the purpose of this second read?

When writing CacheFiles, I noticed that ext3 would occasionally unlock a page
that had neither PG_uptodate nor PG_error set, and so I had to force another
readpage() on it.

David

  reply	other threads:[~2006-05-04 21:43 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-04  3:17 [PATCH 0/12: eCryptfs] eCryptfs version 0.1.6 Phillip Hellewell
2006-05-04  3:27 ` [PATCH 1/13: eCryptfs] fs/Makefile and fs/Kconfig Phillip Hellewell
2006-05-04  3:35 ` [PATCH 2/13: eCryptfs] Documentation Phillip Hellewell
2006-05-04  7:32   ` Pavel Machek
2006-05-04 12:11     ` Michael Halcrow
2006-05-04  3:36 ` [PATCH 3/13: eCryptfs] Makefile Phillip Hellewell
2006-05-04  3:37 ` [PATCH 4/13: eCryptfs] Main module functions Phillip Hellewell
2006-05-04  3:37 ` [PATCH 5/13: eCryptfs] Header declarations Phillip Hellewell
2006-05-04 14:51   ` Pekka Enberg
2006-05-04 14:58     ` Artem B. Bityutskiy
2006-05-04 15:22       ` Pekka Enberg
2006-05-04 15:29         ` Artem B. Bityutskiy
2006-05-04 15:08     ` Michael Thompson
2006-05-04  3:38 ` [PATCH 6/13: eCryptfs] Superblock operations Phillip Hellewell
2006-05-04  9:55   ` Pavel Machek
2006-05-04 14:02     ` Michael Thompson
2006-05-04 14:26       ` Pekka Enberg
2006-05-04 14:37   ` Pekka Enberg
2006-05-04 15:00     ` Michael Thompson
2006-05-04 15:12       ` Pekka Enberg
2006-05-04 21:40     ` David Howells
2006-05-05 13:12       ` Dave Kleikamp
2006-05-05 14:03         ` David Howells
2006-05-05 14:34           ` Dave Kleikamp
2006-05-05 14:52             ` David Howells
2006-05-05 16:15   ` Timothy R. Chavez
2006-05-04  3:39 ` [PATCH 7/13: eCryptfs] Dentry operations Phillip Hellewell
2006-05-05 16:46   ` Timothy R. Chavez
2006-05-04  3:39 ` [PATCH 8/13: eCryptfs] File operations Phillip Hellewell
2006-05-04  4:06   ` Eric Dumazet
2006-05-05 18:55   ` Timothy R. Chavez
2006-05-04  3:40 ` [PATCH 9/13: eCryptfs] Inode operations Phillip Hellewell
2006-05-04  3:41 ` [PATCH 10/13: eCryptfs] Mmap operations Phillip Hellewell
2006-05-04 15:13   ` Pekka Enberg
2006-05-04 21:43     ` David Howells [this message]
2006-05-05 15:22       ` Dave Kleikamp
2006-05-05 15:38         ` Pekka Enberg
2006-05-06  2:21           ` Andrew Morton
2006-05-06 16:00             ` Michael Halcrow
2006-05-06 16:42               ` Andrew Morton
2006-05-06 16:57                 ` Linus Torvalds
2006-05-04  3:42 ` [PATCH 11/13: eCryptfs] Keystore Phillip Hellewell
2006-05-04  3:42 ` [PATCH 12/13: eCryptfs] Crypto functions Phillip Hellewell
2006-05-04  3:43 ` [PATCH 13/13: eCryptfs] Debug functions Phillip Hellewell
2006-05-04 20:30   ` Randy.Dunlap
2006-05-04  7:28 ` [PATCH 0/12: eCryptfs] eCryptfs version 0.1.6 Pavel Machek
2006-05-04 12:08   ` Michael Halcrow
2006-05-05  9:05 ` Alon Bar-Lev
2006-05-05 16:08   ` Michael Halcrow
  -- strict thread matches above, loose matches on Subject: below --
2006-05-13  3:37 [PATCH 0/13: eCryptfs] eCryptfs Patch Set Phillip Hellewell
2006-05-13  3:47 ` [PATCH 10/13: eCryptfs] Mmap operations Phillip Hellewell
2006-06-28 14:16   ` Pekka Enberg
2006-06-28 15:02     ` Michael Halcrow

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