null_blk: suppress invalid partition info
null_blk is partitionable, but it doesn't store any of the info. When
it is loaded, you would normally see:
[1226739.343608] nullb0: unknown partition table
[1226739.343746] nullb1: unknown partition table
which can confuse some people. Add the appropriate gendisk flag
to suppress this info.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index aa2224a..65cd61a 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -579,7 +579,7 @@
sector_div(size, bs);
set_capacity(disk, size);
- disk->flags |= GENHD_FL_EXT_DEVT;
+ disk->flags |= GENHD_FL_EXT_DEVT | GENHD_FL_SUPPRESS_PARTITION_INFO;
disk->major = null_major;
disk->first_minor = nullb->index;
disk->fops = &null_fops;