From: Andi Kleen <andi@firstfloor.org>
To: Sage Weil <sage@newdream.net>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 08/19] ceph: address space operations
Date: Thu, 23 Jul 2009 21:16:11 +0200 [thread overview]
Message-ID: <20090723191611.GE19207@basil.fritz.box> (raw)
In-Reply-To: <Pine.LNX.4.64.0907231115190.2930@cobra.newdream.net>
> There are two other memory allocations during writeout: a vector of pages
> to be written, and the message we're sending to the OSD. If I use a
> mempool for those to guarantee as least some writeout will occur, how do I
> safely defer when allocations do fail? Will pdflush (or it's replacement)
> eventually come back and try ->writepages() again?
mempool allocs should never fail, just block for a long time until
someone else frees. This means you need to ensure of course you
always make forward progress.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-07-23 19:16 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-22 19:51 [PATCH 00/19] ceph: Ceph distributed file system client v0.11 Sage Weil
2009-07-22 19:51 ` [PATCH 01/19] ceph: documentation Sage Weil
2009-07-22 19:51 ` [PATCH 02/19] ceph: on-wire types Sage Weil
2009-07-22 19:51 ` [PATCH 03/19] ceph: client types Sage Weil
2009-07-22 19:51 ` [PATCH 04/19] ceph: super.c Sage Weil
2009-07-22 19:51 ` [PATCH 05/19] ceph: inode operations Sage Weil
2009-07-22 19:51 ` [PATCH 06/19] ceph: directory operations Sage Weil
2009-07-22 19:51 ` [PATCH 07/19] ceph: file operations Sage Weil
2009-07-22 19:51 ` [PATCH 08/19] ceph: address space operations Sage Weil
2009-07-22 19:51 ` [PATCH 09/19] ceph: MDS client Sage Weil
2009-07-22 19:51 ` [PATCH 10/19] ceph: OSD client Sage Weil
2009-07-22 19:51 ` [PATCH 11/19] ceph: CRUSH mapping algorithm Sage Weil
2009-07-22 19:51 ` [PATCH 12/19] ceph: monitor client Sage Weil
2009-07-22 19:51 ` [PATCH 13/19] ceph: capability management Sage Weil
2009-07-22 19:51 ` [PATCH 14/19] ceph: snapshot management Sage Weil
2009-07-22 19:51 ` [PATCH 15/19] ceph: messenger library Sage Weil
2009-07-22 19:51 ` [PATCH 16/19] ceph: nfs re-export support Sage Weil
2009-07-22 19:51 ` [PATCH 17/19] ceph: ioctls Sage Weil
2009-07-22 19:51 ` [PATCH 18/19] ceph: debugfs Sage Weil
2009-07-22 19:51 ` [PATCH 19/19] ceph: Kconfig, Makefile Sage Weil
2009-07-25 5:31 ` [PATCH 18/19] ceph: debugfs Greg KH
2009-07-27 17:06 ` Sage Weil
2009-07-22 22:39 ` [PATCH 17/19] ceph: ioctls Andi Kleen
2009-07-22 23:52 ` Sage Weil
2009-07-23 6:24 ` Andi Kleen
2009-07-23 18:42 ` Sage Weil
2009-07-23 10:25 ` [PATCH 08/19] ceph: address space operations Andi Kleen
2009-07-23 18:22 ` Sage Weil
2009-07-23 19:16 ` Andi Kleen [this message]
2009-07-24 4:48 ` Sage Weil
2009-07-23 19:17 ` Andi Kleen
2009-07-23 18:26 ` Sage Weil
2009-07-23 18:47 ` Trond Myklebust
2009-07-24 4:44 ` Sage Weil
2009-07-24 6:56 ` Andi Kleen
2009-07-24 16:52 ` Sage Weil
2009-07-24 19:40 ` J. Bruce Fields
-- strict thread matches above, loose matches on Subject: below --
2009-08-05 22:30 [PATCH 00/19] ceph distributed file system client Sage Weil
2009-08-05 22:30 ` [PATCH 01/19] ceph: documentation Sage Weil
2009-08-05 22:30 ` [PATCH 02/19] ceph: on-wire types Sage Weil
2009-08-05 22:30 ` [PATCH 03/19] ceph: client types Sage Weil
2009-08-05 22:30 ` [PATCH 04/19] ceph: super.c Sage Weil
2009-08-05 22:30 ` [PATCH 05/19] ceph: inode operations Sage Weil
2009-08-05 22:30 ` [PATCH 06/19] ceph: directory operations Sage Weil
2009-08-05 22:30 ` [PATCH 07/19] ceph: file operations Sage Weil
2009-08-05 22:30 ` [PATCH 08/19] ceph: address space operations Sage Weil
2008-11-14 0:55 [PATCH 00/19] ceph: Ceph distributed file system client Sage Weil
2008-11-14 0:56 ` [PATCH 01/19] ceph: documentation Sage Weil
2008-11-14 0:56 ` [PATCH 02/19] ceph: on-wire types Sage Weil
2008-11-14 0:56 ` [PATCH 03/19] ceph: client types Sage Weil
2008-11-14 0:56 ` [PATCH 04/19] ceph: super.c Sage Weil
2008-11-14 0:56 ` [PATCH 05/19] ceph: inode operations Sage Weil
2008-11-14 0:56 ` [PATCH 06/19] ceph: directory operations Sage Weil
2008-11-14 0:56 ` [PATCH 07/19] ceph: file operations Sage Weil
2008-11-14 0:56 ` [PATCH 08/19] ceph: address space operations Sage Weil
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