From: majianpeng Date: Tue, 3 Jul 2012 02:11:54 +0000 (+1000) Subject: md/raid5: In ops_run_io, inc nr_pending before calling md_wait_for_blocked_rdev X-Git-Tag: v3.5-rc6~24^2~9 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1850753d2e6d9ca7856581ca5d3cf09521e6a5d7;p=pandora-kernel.git md/raid5: In ops_run_io, inc nr_pending before calling md_wait_for_blocked_rdev In ops_run_io(), the call to md_wait_for_blocked_rdev will decrement nr_pending so we lose the reference we hold on the rdev. So atomic_inc it first to maintain the reference. This bug was introduced by commit 73e92e51b7969ef5477d md/raid5. Don't write to known bad block on doubtful devices. which appeared in 3.0, so patch is suitable for stable kernels since then. Cc: stable@vger.kernel.org Signed-off-by: majianpeng Signed-off-by: NeilBrown --- Reading git-diff-tree failed