md: write bitmap information to devices that are undergoing recovery.
When we add some spares to an array and start recovery, and we have a bitmap which is stored 'internally' on all devices, we call bitmap_write_all to make sure the bitmap is correct on the new device(s). However that doesn't work as write_sb_page only writes to 'In_sync' devices, and devices undergoing recovery are not 'In_sync' until recovery finishes. So extend write_sb_page (actually next_active_rdev) to include devices that are under recovery. Signed-off-by: NeilBrown <neilb@suse.de>
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@ -266,7 +266,6 @@ static mdk_rdev_t *next_active_rdev(mdk_rdev_t *rdev, mddev_t *mddev)
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list_for_each_continue_rcu(pos, &mddev->disks) {
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rdev = list_entry(pos, mdk_rdev_t, same_set);
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if (rdev->raid_disk >= 0 &&
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test_bit(In_sync, &rdev->flags) &&
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!test_bit(Faulty, &rdev->flags)) {
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/* this is a usable devices */
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atomic_inc(&rdev->nr_pending);
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