The patch 7ee06ddc4038f936b0d4459d37a7d4d844fb03db ("dm snapshot: fix a
crash when an origin has no snapshots") introduced a regression in
snapshot merging - the test lvcreate-cache-snapshot.sh got stuck in an
infinite loop.This patch reverts it. Signed-off-by: Mikulas Patocka <[email protected]> Index: linux-2.6/drivers/md/dm-snap.c =================================================================== --- linux-2.6.orig/drivers/md/dm-snap.c +++ linux-2.6/drivers/md/dm-snap.c @@ -855,11 +855,12 @@ static int dm_add_exception(void *contex static uint32_t __minimum_chunk_size(struct origin *o) { struct dm_snapshot *snap; - unsigned chunk_size = rounddown_pow_of_two(UINT_MAX); + unsigned chunk_size = 0; if (o) list_for_each_entry(snap, &o->snapshots, list) - chunk_size = min(chunk_size, snap->store->chunk_size); + chunk_size = min_not_zero(chunk_size, + snap->store->chunk_size); return (uint32_t) chunk_size; } -- dm-devel mailing list [email protected] https://listman.redhat.com/mailman/listinfo/dm-devel
