From: Chris Mason Date: Wed, 24 Sep 2008 00:19:49 +0000 (-0400) Subject: Btrfs: Fix race against disk_i_size updates X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~56^2~30^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34353029534a08e41cfb8be647d734b9ce9ebff8;p=pandora-kernel.git Btrfs: Fix race against disk_i_size updates The code to update the on disk i_size happens before the ordered_extent record is removed. So, it is possible for multiple ordered_extent completion routines to run at the same time, and to find each other in the ordered tree. The end result is they both decide not to update disk_i_size, leaving it too small. This temporary fix just puts the updates inside the extent_mutex. A real solution would be stronger ordering of disk_i_size updates against removing the ordered extent from the tree. Signed-off-by: Chris Mason --- Reading git-diff-tree failed