From: NeilBrown Date: Thu, 13 Aug 2009 00:41:50 +0000 (+1000) Subject: md: allow upper limit for resync/reshape to be set when array is read-only X-Git-Tag: v2.6.31-rc6~6^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d484a4a7a5126410eed5f8dd329a33f6eeed068;p=pandora-kernel.git md: allow upper limit for resync/reshape to be set when array is read-only Normally we only allow the upper limit for a reshape to be decreased when the array not performing a sync/recovery/reshape, otherwise there could be races. But if an array is part-way through a reshape when it is assembled the reshape is started immediately leaving no window to set an upper bound. If the array is started read-only, the reshape will be suspended until the array becomes writable, so that provides a window during which it is perfectly safe to reduce the upper limit of a reshape. So: allow the upper limit (sync_max) to be reduced even if the reshape thread is running, as long as the array is still read-only. Signed-off-by: NeilBrown --- Reading git-diff-tree failed