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drbd: drbd_md_sync before calling user space helpers

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Just in case we have some pending meta data changes to sync, do it
before we call our userland helper, as that may take some time,
or even cause a hard reboot.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg 2010-07-19 17:41:04 +02:00 committed by Philipp Reisner
parent ee15b03816
commit 1090c056c5
1 changed files with 4 additions and 0 deletions
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4
drivers/block/drbd/drbd_nl.c
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@ -172,6 +172,10 @@ int drbd_khelper(struct drbd_conf *mdev, char *cmd)
put_net_conf(mdev);
}
/* The helper may take some time.
* write out any unsynced meta data changes now */
drbd_md_sync(mdev);
dev_info(DEV, "helper command: %s %s %s\n", usermode_helper, cmd, mb);
drbd_bcast_ev_helper(mdev, cmd);