From: David Chinner <dgc@sgi.com>
Date: Thu, 10 Apr 2008 02:18:39 +0000 (+1000)
Subject: [XFS] Per iclog callback chain lock
X-Git-Tag: v2.6.26-rc1~1147^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=114d23aae51233b2bc62d8e2a632bcb55de1953d;p=pandora-kernel.git

[XFS] Per iclog callback chain lock

Rather than use the icloglock for protecting the iclog completion callback
chain, use a new per-iclog lock so that walking the callback chain doesn't
require holding a global lock.

This reduces contention on the icloglock during transaction commit and log
I/O completion by reducing the number of times we need to hold the global
icloglock during these operations.

SGI-PV: 978729
SGI-Modid: xfs-linux-melb:xfs-kern:30770a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
---

Reading git-diff-tree failed