dm mpath: make pg_init_delay_msecs settable

"pg_init_delay_msecs X" can be passed as a feature in the multipath
table and is used to set m->pg_init_delay_msecs in parse_features().
However, alloc_multipath_stage2(), which is called after
parse_features(), resets m->pg_init_delay_msecs to its default value.
Instead, set m->pg_init_delay_msecs in alloc_multipath(), which is
called before parse_features(), to avoid overwriting a value passed in
by the table.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 6f9d86f4b912c40a3e92403b2dc7851a23afb10d..de03f9b065842633e6738d148e65293632bb5b8b 100644 (file)
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -225,6 +225,7 @@ static struct multipath *alloc_multipath(struct dm_target *ti)
                mutex_init(&m->work_mutex);
 
                m->queue_mode = DM_TYPE_NONE;
+               m->pg_init_delay_msecs = DM_PG_INIT_DELAY_DEFAULT;
 
                m->ti = ti;
                ti->private = m;
@@ -251,7 +252,6 @@ static int alloc_multipath_stage2(struct dm_target *ti, struct multipath *m)
        set_bit(MPATHF_QUEUE_IO, &m->flags);
        atomic_set(&m->pg_init_in_progress, 0);
        atomic_set(&m->pg_init_count, 0);
-       m->pg_init_delay_msecs = DM_PG_INIT_DELAY_DEFAULT;
        init_waitqueue_head(&m->pg_init_wait);
        init_waitqueue_head(&m->probe_wait);