From: NeilBrown <neilb@cse.unsw.edu.au>
Date: Tue, 17 May 2005 04:53:16 +0000 (-0700)
Subject: [PATCH] md: set the unplug_fn and issue_flush_fn for md devices *after* committed... 
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7a5febe9ffeecd1e78c5b505260ccc1ef18021b4;p=openwrt%2Fstaging%2Fblogic.git

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

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 4e4bfde3db5d..2ae2d709cb15 100644
--- 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 83380b5d6593..1db5de52d376 100644
--- 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 e9dc2876a626..3c37be6423d7 100644
--- 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 e96e2a10a9c9..3cb11ac232fa 100644
--- 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 8a33f351e092..908edd78a792 100644
--- 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) {