From: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
This patch fixes hard-coded value for the size of a chunk that includes
disk header for persistent snapshot. It should be changed to existing
macro NUM_SNAPSHOT_HDR_CHUNKS instead of using hard-coded value 1.
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---
drivers/md/dm-snap-persistent.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Index: linux-2.6.35/drivers/md/dm-snap-persistent.c
===================================================================
--- linux-2.6.35.orig/drivers/md/dm-snap-persistent.c
+++ linux-2.6.35/drivers/md/dm-snap-persistent.c
@@ -266,7 +266,7 @@ static int chunk_io(struct pstore *ps, v
*/
static chunk_t area_location(struct pstore *ps, chunk_t area)
{
- return 1 + ((ps->exceptions_per_area + 1) * area);
+ return NUM_SNAPSHOT_HDR_CHUNKS + ((ps->exceptions_per_area + 1) * area);
}
/*
@@ -780,8 +780,8 @@ static int persistent_commit_merge(struc
* ps->current_area does not get reduced by prepare_merge() until
* after commit_merge() has removed the nr_merged previous exceptions.
*/
- ps->next_free = (area_location(ps, ps->current_area) - 1) +
- (ps->current_committed + 1) + NUM_SNAPSHOT_HDR_CHUNKS;
+ ps->next_free = area_location(ps, ps->current_area) +
+ ps->current_committed + 1;
return 0;
}