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path: root/drivers/md/dm-mpath.c
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Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 785806b..f9b7b32 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -329,13 +329,17 @@ 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 +681,7 @@ 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;
@@ -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)