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authorLars Ellenberg <lars.ellenberg@linbit.com>2010-07-19 17:41:04 +0200
committerPhilipp Reisner <philipp.reisner@linbit.com>2010-10-14 18:38:31 +0200
commit1090c056c5eb6d5335cceb381683e77ac24c71ab (patch)
tree66c38894d55a57797a27569ec77dd5090a9b08f3 /drivers/block/drbd
parentee15b038164fcf19b798021762dee3cf5cbc6433 (diff)
downloadlinux-1090c056c5eb6d5335cceb381683e77ac24c71ab.tar.bz2
drbd: drbd_md_sync before calling user space helpers
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>
Diffstat (limited to 'drivers/block/drbd')
-rw-r--r--drivers/block/drbd/drbd_nl.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index e0061a906ba8..5b30f90cab3e 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -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);