From: David Chinner Date: Tue, 5 Jun 2007 06:24:36 +0000 (+1000) Subject: [XFS] Block on unwritten extent conversion during synchronous direct I/O. X-Git-Tag: v2.6.23-rc1~1056^2~24 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e927af90aaa7d75543edbbd9c2810e6963d0443f;p=pandora-kernel.git [XFS] Block on unwritten extent conversion during synchronous direct I/O. Currently we do not wait on extent conversion to occur, and hence we can return to userspace from a synchronous direct I/O write without having completed all the actions in the write. Hence a read after the write may see zeroes (unwritten extent) rather than the data that was written. Block the I/O completion by triggering a synchronous workqueue flush to ensure that the conversion has occurred before we return to userspace. SGI-PV: 964092 SGI-Modid: xfs-linux-melb:xfs-kern:28775a Signed-off-by: David Chinner Signed-off-by: Tim Shimmin --- Reading git-diff-tree failed