From: Miao Xie Date: Tue, 16 Oct 2012 11:33:38 +0000 (+0000) Subject: Btrfs: improve the noflush reservation X-Git-Tag: v3.8-rc1~71^2~112 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08e007d2e57744472a9424735a368ffe6d625597;p=pandora-kernel.git Btrfs: improve the noflush reservation In some places(such as: evicting inode), we just can not flush the reserved space of delalloc, flushing the delayed directory index and delayed inode is OK, but we don't try to flush those things and just go back when there is no enough space to be reserved. This patch fixes this problem. We defined 3 types of the flush operations: NO_FLUSH, FLUSH_LIMIT and FLUSH_ALL. If we can in the transaction, we should not flush anything, or the deadlock would happen, so use NO_FLUSH. If we flushing the reserved space of delalloc would cause deadlock, use FLUSH_LIMIT. In the other cases, FLUSH_ALL is used, and we will flush all things. Signed-off-by: Miao Xie Signed-off-by: Chris Mason --- Reading git-diff-tree failed