Fix the potential history overlap when using more than two history uuids.
Signed-off-by: Nick Wang <nw...@suse.com>
CC: Philipp Reisner <philipp.reis...@linbit.com>
CC: Lars Ellenberg <lars.ellenb...@linbit.com>
CC: drbd-...@lists.linbit.com
CC: linux-kernel@vger.kernel.org
---
drbd/drbd_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drbd/drbd_main.c b/drbd/drbd_main.c
index f41aa8a..2ffb569 100644
--- a/drbd/drbd_main.c
+++ b/drbd/drbd_main.c
@@ -3466,8 +3466,8 @@ void drbd_uuid_move_history(struct drbd_device *device)
__must_hold(local)
{
int i;
- for (i = UI_HISTORY_START; i < UI_HISTORY_END; i++)
- device->ldev->md.uuid[i+1] = device->ldev->md.uuid[i];
+ for (i = UI_HISTORY_END; i > UI_HISTORY_START; i--)
+ device->ldev->md.uuid[i] = device->ldev->md.uuid[i-1];
}
void __drbd_uuid_set(struct drbd_device *device, int idx, u64 val)
__must_hold(local)
--
1.8.4.5
--
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