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Commit 0a6dbf2b authored by Philipp Reisner's avatar Philipp Reisner
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drbd: Fix for a race between IO and a detach operation [Bugz 262] 



In D_DISKLESS we do not hand out any new references to ldev (local_cnt)
therefore waiting until all previously handed out refereces got returned
is sufficient before actually freeing mdev->ldev.

Signed-off-by: default avatarPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: default avatarLars Ellenberg <lars.ellenberg@linbit.com>
parent 0798219f

drivers/block/drbd/drbd_main.c

+1 −0
Original line number Diff line number Diff line
@@ -1298,6 +1298,7 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os, 
				dev_err(DEV, "Sending state in drbd_io_error() failed\n");

		}



		wait_event(mdev->misc_wait, !atomic_read(&mdev->local_cnt));

		lc_destroy(mdev->resync);

		mdev->resync = NULL;

		lc_destroy(mdev->act_log);