Commit e59721cc authored by Goldwyn Rodrigues's avatar Goldwyn Rodrigues
Browse files

Resync start/Finish actions 



When a RESYNC_START message arrives, the node removes the entry
with the current slot number and adds the range to the
suspend_list.

Simlarly, when a RESYNC_FINISHED message is received, node clears
entry with respect to the bitmap number.

Signed-off-by: default avatarGoldwyn Rodrigues <rgoldwyn@suse.com>
parent 965400eb

drivers/md/md-cluster.c

+46 −0
Original line number Diff line number Diff line
@@ -314,6 +314,50 @@ static void ack_bast(void *arg, int mode) 
		md_wakeup_thread(cinfo->recv_thread);

}



static void __remove_suspend_info(struct md_cluster_info *cinfo, int slot)

{

	struct suspend_info *s, *tmp;



	list_for_each_entry_safe(s, tmp, &cinfo->suspend_list, list)

		if (slot == s->slot) {

			pr_info("%s:%d Deleting suspend_info: %d\n",

					__func__, __LINE__, slot);

			list_del(&s->list);

			kfree(s);

			break;

		}

}



static void remove_suspend_info(struct md_cluster_info *cinfo, int slot)

{

	spin_lock_irq(&cinfo->suspend_lock);

	__remove_suspend_info(cinfo, slot);

	spin_unlock_irq(&cinfo->suspend_lock);

}





static void process_suspend_info(struct md_cluster_info *cinfo,

		int slot, sector_t lo, sector_t hi)

{

	struct suspend_info *s;



	if (!hi) {

		remove_suspend_info(cinfo, slot);

		return;

	}

	s = kzalloc(sizeof(struct suspend_info), GFP_KERNEL);

	if (!s)

		return;

	s->slot = slot;

	s->lo = lo;

	s->hi = hi;

	spin_lock_irq(&cinfo->suspend_lock);

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

	__remove_suspend_info(cinfo, slot);

	list_add(&s->list, &cinfo->suspend_list);

	spin_unlock_irq(&cinfo->suspend_lock);

}



static void process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg)

{

	switch (msg->type) {
@@ -325,6 +369,8 @@ 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,

				msg->low, msg->high);

		break;

	};

}

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