md-cluster: complete all write requests before adding suspend_info
process_suspend_info - which handles the RESYNCING request - must not reply until all writes which were initiated before the request arrived, have completed. As a by-product, all process_* functions now take mddev as their first arguement making it uniform. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Signed-off-by: NeilBrown <neilb@suse.com>
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@ -374,9 +374,10 @@ static void remove_suspend_info(struct md_cluster_info *cinfo, int slot)
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}
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static void process_suspend_info(struct md_cluster_info *cinfo,
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static void process_suspend_info(struct mddev *mddev,
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int slot, sector_t lo, sector_t hi)
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{
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struct md_cluster_info *cinfo = mddev->cluster_info;
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struct suspend_info *s;
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if (!hi) {
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@ -389,6 +390,8 @@ static void process_suspend_info(struct md_cluster_info *cinfo,
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s->slot = slot;
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s->lo = lo;
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s->hi = hi;
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mddev->pers->quiesce(mddev, 1);
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mddev->pers->quiesce(mddev, 0);
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spin_lock_irq(&cinfo->suspend_lock);
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/* Remove existing entry (if exists) before adding */
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__remove_suspend_info(cinfo, slot);
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@ -457,7 +460,7 @@ static void process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg)
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case RESYNCING:
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pr_info("%s: %d Received message: RESYNCING from %d\n",
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__func__, __LINE__, msg->slot);
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process_suspend_info(mddev->cluster_info, msg->slot,
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process_suspend_info(mddev, msg->slot,
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msg->low, msg->high);
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break;
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case NEWDISK:
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