md/raid1: close some possible races on write errors during resync
commit 4367af55 md/raid1: clear bad-block record when write succeeds. Added a 'reschedule_retry' call possibility at the end of end_sync_write, but didn't add matching code at the end of sync_request_write. So if the writes complete very quickly, or scheduling makes it seem that way, then we can miss rescheduling the request and the resync could hang. Also commit 73d5c38a md: avoid races when stopping resync. Fix a race condition in this same code in end_sync_write but didn't make the change in sync_request_write. This patch updates sync_request_write to fix both of those. Patch is suitable for 3.1 and later kernels. Reported-by:Alexander Lyakas <alex.bolshoy@gmail.com> Original-version-by:
Alexander Lyakas <alex.bolshoy@gmail.com> Cc: stable@vger.kernel.org Signed-off-by:
NeilBrown <neilb@suse.de>
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a05b7ea0
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