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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 785806bdb248..f9b7b32d5d5c 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,
329/* 329/*
330 * If we run out of usable paths, should we queue I/O or error it? 330 * If we run out of usable paths, should we queue I/O or error it?
331 */ 331 */
332static int queue_if_no_path(struct multipath *m, unsigned queue_if_no_path) 332static int queue_if_no_path(struct multipath *m, unsigned queue_if_no_path,
333 unsigned save_old_value)
333{ 334{
334 unsigned long flags; 335 unsigned long flags;
335 336
336 spin_lock_irqsave(&m->lock, flags); 337 spin_lock_irqsave(&m->lock, flags);
337 338
338 m->saved_queue_if_no_path = m->queue_if_no_path; 339 if (save_old_value)
340 m->saved_queue_if_no_path = m->queue_if_no_path;
341 else
342 m->saved_queue_if_no_path = queue_if_no_path;
339 m->queue_if_no_path = queue_if_no_path; 343 m->queue_if_no_path = queue_if_no_path;
340 if (!m->queue_if_no_path && m->queue_size) 344 if (!m->queue_if_no_path && m->queue_size)
341 queue_work(kmultipathd, &m->process_queued_ios); 345 queue_work(kmultipathd, &m->process_queued_ios);
@@ -677,7 +681,7 @@ static int parse_features(struct arg_set *as, struct multipath *m,
677 return 0; 681 return 0;
678 682
679 if (!strnicmp(shift(as), MESG_STR("queue_if_no_path"))) 683 if (!strnicmp(shift(as), MESG_STR("queue_if_no_path")))
680 return queue_if_no_path(m, 1); 684 return queue_if_no_path(m, 1, 0);
681 else { 685 else {
682 ti->error = "Unrecognised multipath feature request"; 686 ti->error = "Unrecognised multipath feature request";
683 return -EINVAL; 687 return -EINVAL;
@@ -1077,7 +1081,7 @@ static void multipath_presuspend(struct dm_target *ti)
1077{ 1081{
1078 struct multipath *m = (struct multipath *) ti->private; 1082 struct multipath *m = (struct multipath *) ti->private;
1079 1083
1080 queue_if_no_path(m, 0); 1084 queue_if_no_path(m, 0, 1);
1081} 1085}
1082 1086
1083/* 1087/*
@@ -1222,9 +1226,9 @@ static int multipath_message(struct dm_target *ti, unsigned argc, char **argv)
1222 1226
1223 if (argc == 1) { 1227 if (argc == 1) {
1224 if (!strnicmp(argv[0], MESG_STR("queue_if_no_path"))) 1228 if (!strnicmp(argv[0], MESG_STR("queue_if_no_path")))
1225 return queue_if_no_path(m, 1); 1229 return queue_if_no_path(m, 1, 0);
1226 else if (!strnicmp(argv[0], MESG_STR("fail_if_no_path"))) 1230 else if (!strnicmp(argv[0], MESG_STR("fail_if_no_path")))
1227 return queue_if_no_path(m, 0); 1231 return queue_if_no_path(m, 0, 0);
1228 } 1232 }
1229 1233
1230 if (argc != 2) 1234 if (argc != 2)