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authorPhilipp Reisner <philipp.reisner@linbit.com>2012-10-19 14:21:22 +0200
committerPhilipp Reisner <philipp.reisner@linbit.com>2012-11-09 14:11:42 +0100
commit518a4d53b2985451a08cb4e5b79deacfe151a38a (patch)
treea2bbe91f62459f474417c1485912b1da7beaed10 /drivers
parentfd0017c1243b2b9058525672b9ea13272fb51b30 (diff)
downloadvexpress-lsk-518a4d53b2985451a08cb4e5b79deacfe151a38a.tar.gz
drbd: don't try to clear bits once the disk has failed
If the disk has failed already, there is no point trying to change the bitmap. drbd_set_out_of_sync() already had this safeguard, time to add it to drbd_set_in_sync() as well. This also prevents some warning messages, like FIXME asender in bm_change_bits_to, bitmap locked for 'detach' by worker if our disk fails during resync, while there are some resync acks queued up. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/drbd/drbd_actlog.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index bc6284ef21d..92510f8ad01 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -695,11 +695,15 @@ void __drbd_set_in_sync(struct drbd_conf *mdev, sector_t sector, int size,
(unsigned long long)sector, size);
return;
}
+
+ if (!get_ldev(mdev))
+ return; /* no disk, no metadata, no bitmap to clear bits in */
+
nr_sectors = drbd_get_capacity(mdev->this_bdev);
esector = sector + (size >> 9) - 1;
if (!expect(sector < nr_sectors))
- return;
+ goto out;
if (!expect(esector < nr_sectors))
esector = nr_sectors - 1;
@@ -709,7 +713,7 @@ void __drbd_set_in_sync(struct drbd_conf *mdev, sector_t sector, int size,
* round up start sector, round down end sector. we make sure we only
* clear full, aligned, BM_BLOCK_SIZE (4K) blocks */
if (unlikely(esector < BM_SECT_PER_BIT-1))
- return;
+ goto out;
if (unlikely(esector == (nr_sectors-1)))
ebnr = lbnr;
else
@@ -717,14 +721,14 @@ void __drbd_set_in_sync(struct drbd_conf *mdev, sector_t sector, int size,
sbnr = BM_SECT_TO_BIT(sector + BM_SECT_PER_BIT-1);
if (sbnr > ebnr)
- return;
+ goto out;
/*
* ok, (capacity & 7) != 0 sometimes, but who cares...
* we count rs_{total,left} in bits, not sectors.
*/
count = drbd_bm_clear_bits(mdev, sbnr, ebnr);
- if (count && get_ldev(mdev)) {
+ if (count) {
drbd_advance_rs_marks(mdev, drbd_bm_total_weight(mdev));
spin_lock_irqsave(&mdev->al_lock, flags);
drbd_try_clear_on_disk_bm(mdev, sector, count, true);
@@ -733,8 +737,9 @@ void __drbd_set_in_sync(struct drbd_conf *mdev, sector_t sector, int size,
/* just wake_up unconditional now, various lc_chaged(),
* lc_put() in drbd_try_clear_on_disk_bm(). */
wake_up = 1;
- put_ldev(mdev);
}
+out:
+ put_ldev(mdev);
if (wake_up)
wake_up(&mdev->al_wait);
}