From: Bob Peterson <rpeterso@redhat.com>
Date: Fri, 11 Jan 2008 19:44:50 +0000 (-0600)
Subject: [GFS2] gfs2_alloc_required performance
X-Git-Tag: v2.6.25-rc1~1241^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05220535196d413db434527a3edcba79b7187df8;p=pandora-kernel.git

[GFS2] gfs2_alloc_required performance

This is a small I/O performance enhancement to gfs2.  (Actually, it is a rework of
an earlier version I got wrong).  The idea here is to check if the write extends
past the last block in the file.  If so, the function can save itself a lot of
time and trouble because it knows an allocate will be required.  Benchmarks like
iozone should see better performance.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---

Reading git-diff-tree failed