block: make blkcg_punt_bio_submit optional
Guard all the code to punt bios to a per-cgroup submission helper by a
new CONFIG_BLK_CGROUP_PUNT_BIO symbol that is selected by btrfs.
This way non-btrfs kernel builds don't need to have this code.
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/block/Kconfig b/block/Kconfig
index 941b2dc..69ccf74 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -41,6 +41,9 @@
config BLK_CGROUP_RWSTAT
bool
+config BLK_CGROUP_PUNT_BIO
+ bool
+
config BLK_DEV_BSG_COMMON
tristate
