From: Dan Williams Date: Mon, 19 Oct 2009 21:05:12 +0000 (-0700) Subject: async_tx: fix asynchronous raid6 recovery for ddf layouts X-Git-Tag: v2.6.32-rc6~27^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da17bf4306fd3a52e938b121df82a7baa10eb282;p=pandora-kernel.git async_tx: fix asynchronous raid6 recovery for ddf layouts The raid6 recovery code currently requires special handling of the 4-disk and 5-disk recovery scenarios for the native layout. Quoting from commit 0a82a623: In these situations the default N-disk algorithm will present 0-source or 1-source operations to dma devices. To cover for dma devices where the minimum source count is 2 we implement 4-disk and 5-disk handling in the recovery code. The ddf layout presents disks=6 and disks=7 to the recovery code in these situations. Instead of looking at the number of disks count the number of non-zero sources in the list and call the special case code when the number of non-failed sources is 0 or 1. [neilb@suse.de: replace 'ddf' flag with counting good sources] Signed-off-by: Dan Williams --- Reading git-diff-tree failed