From: Joe Thornber When writing the dirty bitset to the metadata device on a clean shutdown, clear the dirty bits. Previously they were left indicating the cache was dirty. This led to confusion about whether there really was dirty data in the cache or not. (This was a harmless bug.) Reported-by: Darrick J. Wong Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-metadata.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux/drivers/md/dm-cache-metadata.c =================================================================== --- linux.orig/drivers/md/dm-cache-metadata.c +++ linux/drivers/md/dm-cache-metadata.c @@ -979,7 +979,7 @@ static int __dirty(struct dm_cache_metad /* nothing to be done */ return 0; - value = pack_value(oblock, flags | (dirty ? M_DIRTY : 0)); + value = pack_value(oblock, (flags & ~M_DIRTY) | (dirty ? M_DIRTY : 0)); __dm_bless_for_disk(&value); r = dm_array_set_value(&cmd->info, cmd->root, from_cblock(cblock),