[PATCH] md: move bitmap_create to after md array has been initialised
This is important because bitmap_create uses
mddev->resync_max_sectors
and that doesn't have a valid value until after the array
has been initialised (with pers->run()).
[It doesn't make a difference for current personalities that
support bitmaps, but will make a difference for raid10]
This has the added advantage of meaning with can move the thread->timeout
manipulation inside the bitmap.c code instead of sprinkling identical code
throughout all personalities.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 252d55d..b65c36d 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1530,6 +1530,8 @@
return;
mddev->bitmap = NULL; /* disconnect from the md device */
+ if (mddev->thread)
+ mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT;
bitmap_free(bitmap);
}
@@ -1636,6 +1638,8 @@
if (IS_ERR(bitmap->writeback_daemon))
return PTR_ERR(bitmap->writeback_daemon);
+ mddev->thread->timeout = bitmap->daemon_sleep * HZ;
+
return bitmap_update_sb(bitmap);
error:
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b4fb724..ee199d4 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2054,13 +2054,15 @@
if (start_readonly)
mddev->ro = 2; /* read-only, but switch on first write */
- /* before we start the array running, initialise the bitmap */
- err = bitmap_create(mddev);
- if (err)
- printk(KERN_ERR "%s: failed to create bitmap (%d)\n",
- mdname(mddev), err);
- else
- err = mddev->pers->run(mddev);
+ err = mddev->pers->run(mddev);
+ if (!err && mddev->pers->sync_request) {
+ err = bitmap_create(mddev);
+ if (err) {
+ printk(KERN_ERR "%s: failed to create bitmap (%d)\n",
+ mdname(mddev), err);
+ mddev->pers->stop(mddev);
+ }
+ }
if (err) {
printk(KERN_ERR "md: pers->run() failed ...\n");
module_put(mddev->pers->owner);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index f520414..c618015 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1611,7 +1611,6 @@
mdname(mddev));
goto out_free_conf;
}
- if (mddev->bitmap) mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
printk(KERN_INFO
"raid1: raid set %s active with %d out of %d mirrors\n",
@@ -1783,13 +1782,6 @@
lower_barrier(conf);
break;
}
- if (mddev->thread) {
- if (mddev->bitmap)
- mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
- else
- mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT;
- md_wakeup_thread(mddev->thread);
- }
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 53a0f2c..0d016a8 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1964,9 +1964,6 @@
/* Ok, everything is just fine now */
sysfs_create_group(&mddev->kobj, &raid5_attrs_group);
- if (mddev->bitmap)
- mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
-
mddev->queue->unplug_fn = raid5_unplug_device;
mddev->queue->issue_flush_fn = raid5_issue_flush;
@@ -2200,14 +2197,8 @@
spin_unlock_irq(&conf->device_lock);
break;
}
- if (mddev->thread) {
- if (mddev->bitmap)
- mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
- else
- mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT;
- md_wakeup_thread(mddev->thread);
- }
}
+
static mdk_personality_t raid5_personality=
{
.name = "raid5",
diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index 9ac6dcd..304455d 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -1990,9 +1990,6 @@
/* Ok, everything is just fine now */
mddev->array_size = mddev->size * (mddev->raid_disks - 2);
- if (mddev->bitmap)
- mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
-
mddev->queue->unplug_fn = raid6_unplug_device;
mddev->queue->issue_flush_fn = raid6_issue_flush;
return 0;
@@ -2228,14 +2225,8 @@
spin_unlock_irq(&conf->device_lock);
break;
}
- if (mddev->thread) {
- if (mddev->bitmap)
- mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ;
- else
- mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT;
- md_wakeup_thread(mddev->thread);
- }
}
+
static mdk_personality_t raid6_personality=
{
.name = "raid6",
