From: Josef Bacik Date: Mon, 1 Aug 2011 16:08:18 +0000 (-0400) Subject: Btrfs: skip looking for delalloc if we don't have ->fill_delalloc X-Git-Tag: v3.2-rc1~21^2~24^2~49 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e4871070b5f070cacf26525389d56e0345ba156;p=pandora-kernel.git Btrfs: skip looking for delalloc if we don't have ->fill_delalloc We always look for delalloc bytes in our io_tree so we can fill in delalloc. This is fine in most cases, but if we're writing out the btree_inode this is just a superfluous tree search on the io_tree, and if we have a lot of metadata dirty this could be an expensive check. So instead check to see if our io_tree has a ->fill_delalloc op, and if not don't even bother doing the lookup. Thanks, Signed-off-by: Josef Bacik --- Reading git-diff-tree failed