From: Steven Whitehouse Date: Fri, 26 Sep 2008 09:23:22 +0000 (+0100) Subject: GFS2: Support for I/O barriers X-Git-Tag: v2.6.28-rc1~731^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=254db57f9b12daba841a4d91ddb9a8161e9c74ba;p=pandora-kernel.git GFS2: Support for I/O barriers This patch adds barrier support to GFS2. There is not a lot of change really... we just add the barrier flag when we write journal header blocks. If the underlying device refuses to support them, we fall back to the previous way of doing things (wait for the I/O and hope) since there is nothing else we can do. There is no user configuration, barriers will always be on unless the device refuses to support them. This seems a reasonable solution to me since this is a correctness issue. Signed-off-by: Steven Whitehouse --- Reading git-diff-tree failed