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Commit 9ed38ff5 authored by Goldwyn Rodrigues's avatar Goldwyn Rodrigues
Browse files

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: default avatarGoldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: default avatarNeilBrown <neilb@suse.com>
parent da6fb7a9

drivers/md/md-cluster.c

+5 −2
Original line number Diff line number Diff line
@@ -374,9 +374,10 @@ static void remove_suspend_info(struct md_cluster_info *cinfo, int slot) 
}





static void process_suspend_info(struct md_cluster_info *cinfo,

static void process_suspend_info(struct mddev *mddev,

		int slot, sector_t lo, sector_t hi)

{

	struct md_cluster_info *cinfo = mddev->cluster_info;

	struct suspend_info *s;



	if (!hi) {
@@ -389,6 +390,8 @@ static void process_suspend_info(struct md_cluster_info *cinfo, 
	s->slot = slot;

	s->lo = lo;

	s->hi = hi;

	mddev->pers->quiesce(mddev, 1);

	mddev->pers->quiesce(mddev, 0);

	spin_lock_irq(&cinfo->suspend_lock);

	/* Remove existing entry (if exists) before adding */

	__remove_suspend_info(cinfo, slot);
@@ -457,7 +460,7 @@ static void process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg) 
	case RESYNCING:

		pr_info("%s: %d Received message: RESYNCING from %d\n",

			__func__, __LINE__, msg->slot);

		process_suspend_info(mddev->cluster_info, msg->slot,

		process_suspend_info(mddev, msg->slot,

				msg->low, msg->high);

		break;

	case NEWDISK: