tree ae819ad9bda782b06bfa86281cc432afef3134ff
parent c9d65032282943d11b2773ed6f0279ba4820fed1
author Guoqing Jiang <gqjiang@suse.com> 1462204212 -0400
committer Shaohua Li <shli@fb.com> 1462390775 -0700

md-cluster: sync bitmap when node received RESYNCING msg

If the node received RESYNCING message which means
another node will perform resync with the area, then
we don't want to do it again in another node.

Let's set RESYNC_MASK and clear NEEDED_MASK for the
region from old-low to new-low which has finished
syncing, and the region from old-hi to new-hi is about
to syncing, bitmap_sync_with_cluste is introduced for
the purpose.

Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>