[PATCH] md: set the unplug_fn and issue_flush_fn for md devices *after* committed...

We we set the too early, they may still be in place and possibly get called
even though the array didn't get set up properly.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 4e4bfde..2ae2d70 100644 (file)
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -462,10 +462,6 @@ static int multipath_run (mddev_t *mddev)
        }
        memset(conf->multipaths, 0, sizeof(struct multipath_info)*mddev->raid_disks);
 
-       mddev->queue->unplug_fn = multipath_unplug;
-
-       mddev->queue->issue_flush_fn = multipath_issue_flush;
-
        conf->working_disks = 0;
        ITERATE_RDEV(mddev,rdev,tmp) {
                disk_idx = rdev->raid_disk;
@@ -528,6 +524,10 @@ static int multipath_run (mddev_t *mddev)
         * Ok, everything is just fine now
         */
        mddev->array_size = mddev->size;
+
+       mddev->queue->unplug_fn = multipath_unplug;
+       mddev->queue->issue_flush_fn = multipath_issue_flush;
+
        return 0;
 
 out_free_conf:

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 83380b5..1db5de5 100644 (file)
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1197,10 +1197,6 @@ static int run(mddev_t *mddev)
        if (!conf->r1bio_pool)
                goto out_no_mem;
 
-       mddev->queue->unplug_fn = raid1_unplug;
-
-       mddev->queue->issue_flush_fn = raid1_issue_flush;
-
        ITERATE_RDEV(mddev, rdev, tmp) {
                disk_idx = rdev->raid_disk;
                if (disk_idx >= mddev->raid_disks
@@ -1282,6 +1278,9 @@ static int run(mddev_t *mddev)
         */
        mddev->array_size = mddev->size;
 
+       mddev->queue->unplug_fn = raid1_unplug;
+       mddev->queue->issue_flush_fn = raid1_issue_flush;
+
        return 0;
 
 out_no_mem:

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index e9dc287..3c37be6 100644 (file)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1639,9 +1639,6 @@ static int run(mddev_t *mddev)
                        mdname(mddev));
                goto out_free_conf;
        }
-       mddev->queue->unplug_fn = raid10_unplug;
-
-       mddev->queue->issue_flush_fn = raid10_issue_flush;
 
        ITERATE_RDEV(mddev, rdev, tmp) {
                disk_idx = rdev->raid_disk;
@@ -1713,6 +1710,9 @@ static int run(mddev_t *mddev)
        mddev->array_size = size/2;
        mddev->resync_max_sectors = size;
 
+       mddev->queue->unplug_fn = raid10_unplug;
+       mddev->queue->issue_flush_fn = raid10_issue_flush;
+
        /* Calculate max read-ahead size.
         * We need to readahead at least twice a whole stripe....
         * maybe...

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index e96e2a1..3cb11ac 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1620,9 +1620,6 @@ static int run (mddev_t *mddev)
        atomic_set(&conf->active_stripes, 0);
        atomic_set(&conf->preread_active_stripes, 0);
 
-       mddev->queue->unplug_fn = raid5_unplug_device;
-       mddev->queue->issue_flush_fn = raid5_issue_flush;
-
        PRINTK("raid5: run(%s) called.\n", mdname(mddev));
 
        ITERATE_RDEV(mddev,rdev,tmp) {
@@ -1728,6 +1725,10 @@ memory = conf->max_nr_stripes * (sizeof(struct stripe_head) +
        }
 
        /* Ok, everything is just fine now */
+
+       mddev->queue->unplug_fn = raid5_unplug_device;
+       mddev->queue->issue_flush_fn = raid5_issue_flush;
+
        mddev->array_size =  mddev->size * (mddev->raid_disks - 1);
        return 0;
 abort:

diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index 8a33f35..908edd7 100644 (file)
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -1779,9 +1779,6 @@ static int run (mddev_t *mddev)
        atomic_set(&conf->active_stripes, 0);
        atomic_set(&conf->preread_active_stripes, 0);
 
-       mddev->queue->unplug_fn = raid6_unplug_device;
-       mddev->queue->issue_flush_fn = raid6_issue_flush;
-
        PRINTK("raid6: run(%s) called.\n", mdname(mddev));
 
        ITERATE_RDEV(mddev,rdev,tmp) {
@@ -1895,6 +1892,9 @@ static int run (mddev_t *mddev)
 
        /* Ok, everything is just fine now */
        mddev->array_size =  mddev->size * (mddev->raid_disks - 2);
+
+       mddev->queue->unplug_fn = raid6_unplug_device;
+       mddev->queue->issue_flush_fn = raid6_issue_flush;
        return 0;
 abort:
        if (conf) {