X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fmd%2Fdm-mpath.c;h=1816f30678ed1aaa1a0fddc3d4cb043b77c1a4da;hb=c42d9df932ce3732044dc1394114380140ccffe0;hp=785806bdb2485d8c5d5d8b0249b9b63bb8b5a750;hpb=e0d7ff168a71299919f01500b3d507aae0c67513;p=powerpc.git

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 785806bdb2..1816f30678 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -179,8 +179,7 @@ static struct multipath *alloc_multipath(void)
 		m->queue_io = 1;
 		INIT_WORK(&m->process_queued_ios, process_queued_ios, m);
 		INIT_WORK(&m->trigger_event, trigger_event, m);
-		m->mpio_pool = mempool_create(MIN_IOS, mempool_alloc_slab,
-					      mempool_free_slab, _mpio_cache);
+		m->mpio_pool = mempool_create_slab_pool(MIN_IOS, _mpio_cache);
 		if (!m->mpio_pool) {
 			kfree(m);
 			return NULL;
@@ -329,13 +328,17 @@ static int map_io(struct multipath *m, struct bio *bio, struct mpath_io *mpio,
 /*
  * If we run out of usable paths, should we queue I/O or error it?
  */
-static int queue_if_no_path(struct multipath *m, unsigned queue_if_no_path)
+static int queue_if_no_path(struct multipath *m, unsigned queue_if_no_path,
+			    unsigned save_old_value)
 {
 	unsigned long flags;
 
 	spin_lock_irqsave(&m->lock, flags);
 
-	m->saved_queue_if_no_path = m->queue_if_no_path;
+	if (save_old_value)
+		m->saved_queue_if_no_path = m->queue_if_no_path;
+	else
+		m->saved_queue_if_no_path = queue_if_no_path;
 	m->queue_if_no_path = queue_if_no_path;
 	if (!m->queue_if_no_path && m->queue_size)
 		queue_work(kmultipathd, &m->process_queued_ios);
@@ -677,7 +680,7 @@ static int parse_features(struct arg_set *as, struct multipath *m,
 		return 0;
 
 	if (!strnicmp(shift(as), MESG_STR("queue_if_no_path")))
-		return queue_if_no_path(m, 1);
+		return queue_if_no_path(m, 1, 0);
 	else {
 		ti->error = "Unrecognised multipath feature request";
 		return -EINVAL;
@@ -996,6 +999,7 @@ static int do_end_io(struct multipath *m, struct bio *bio,
 {
 	struct hw_handler *hwh = &m->hw_handler;
 	unsigned err_flags = MP_FAIL_PATH;	/* Default behavior */
+	unsigned long flags;
 
 	if (!error)
 		return 0;	/* I/O complete */
@@ -1006,17 +1010,17 @@ static int do_end_io(struct multipath *m, struct bio *bio,
 	if (error == -EOPNOTSUPP)
 		return error;
 
-	spin_lock(&m->lock);
+	spin_lock_irqsave(&m->lock, flags);
 	if (!m->nr_valid_paths) {
 		if (!m->queue_if_no_path) {
-			spin_unlock(&m->lock);
+			spin_unlock_irqrestore(&m->lock, flags);
 			return -EIO;
 		} else {
-			spin_unlock(&m->lock);
+			spin_unlock_irqrestore(&m->lock, flags);
 			goto requeue;
 		}
 	}
-	spin_unlock(&m->lock);
+	spin_unlock_irqrestore(&m->lock, flags);
 
 	if (hwh->type && hwh->type->error)
 		err_flags = hwh->type->error(hwh, bio);
@@ -1036,12 +1040,12 @@ static int do_end_io(struct multipath *m, struct bio *bio,
 	dm_bio_restore(&mpio->details, bio);
 
 	/* queue for the daemon to resubmit or fail */
-	spin_lock(&m->lock);
+	spin_lock_irqsave(&m->lock, flags);
 	bio_list_add(&m->queued_ios, bio);
 	m->queue_size++;
 	if (!m->queue_io)
 		queue_work(kmultipathd, &m->process_queued_ios);
-	spin_unlock(&m->lock);
+	spin_unlock_irqrestore(&m->lock, flags);
 
 	return 1;	/* io not complete */
 }
@@ -1077,7 +1081,7 @@ static void multipath_presuspend(struct dm_target *ti)
 {
 	struct multipath *m = (struct multipath *) ti->private;
 
-	queue_if_no_path(m, 0);
+	queue_if_no_path(m, 0, 1);
 }
 
 /*
@@ -1222,9 +1226,9 @@ static int multipath_message(struct dm_target *ti, unsigned argc, char **argv)
 
 	if (argc == 1) {
 		if (!strnicmp(argv[0], MESG_STR("queue_if_no_path")))
-			return queue_if_no_path(m, 1);
+			return queue_if_no_path(m, 1, 0);
 		else if (!strnicmp(argv[0], MESG_STR("fail_if_no_path")))
-			return queue_if_no_path(m, 0);
+			return queue_if_no_path(m, 0, 0);
 	}
 
 	if (argc != 2)