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drbd: Hold a reference to ldev while doing meta-data IO 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner 2011-06-27 12:23:33 +02:00
parent 4a2fe568b5
commit b2057629ea
2 changed files with 7 additions and 0 deletions
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6
drivers/block/drbd/drbd_actlog.c
View File

@ -118,6 +118,12 @@ static int _drbd_md_sync_page_io(struct drbd_conf *mdev,
bio->bi_end_io = drbd_md_io_complete;
bio->bi_rw = rw;
if (!get_ldev_if_state(mdev, D_ATTACHING)) { /* Corresponding put_ldev in drbd_md_io_complete() */
dev_err(DEV, "ASSERT FAILED: get_ldev_if_state() == 1 in _drbd_md_sync_page_io()\n");
ok = 0;
goto out;
}
bio_get(bio); /* one bio_put() is in the completion handler */
atomic_inc(&mdev->md_io_in_use); /* drbd_md_put_buffer() is in the completion handler */
if (drbd_insert_fault(mdev, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))

1
drivers/block/drbd/drbd_worker.c
View File

@ -81,6 +81,7 @@ void drbd_md_io_complete(struct bio *bio, int error)
wake_up(&mdev->misc_wait);
bio_put(bio);
drbd_md_put_buffer(mdev);
put_ldev(mdev);
}
/* reads on behalf of the partner,