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md-cluster: Suspend writes in RAID10 if within range
If there is a resync going on, all nodes must suspend writes to the range. This is recorded in suspend_info and suspend_list. If there is an I/O within the ranges of any of the suspend_info, area_resyncing will return 1. Signed-off-by: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
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@ -1294,6 +1294,22 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
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sector_t sectors;
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int max_sectors;
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if ((mddev_is_clustered(mddev) &&
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md_cluster_ops->area_resyncing(mddev, WRITE,
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bio->bi_iter.bi_sector,
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bio_end_sector(bio)))) {
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DEFINE_WAIT(w);
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for (;;) {
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prepare_to_wait(&conf->wait_barrier,
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&w, TASK_IDLE);
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if (!md_cluster_ops->area_resyncing(mddev, WRITE,
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bio->bi_iter.bi_sector, bio_end_sector(bio)))
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break;
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schedule();
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}
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finish_wait(&conf->wait_barrier, &w);
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}
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/*
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* Register the new request and wait if the reconstruction
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* thread has put up a bar for new requests.
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