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authorJens Axboe2021-10-06 12:01:07 -0600
committerJens Axboe2021-10-18 06:17:03 -0600
commitba0ffdd8ce48ad7f7e85191cd29f9674caca3745 (patch)
treec02947a9000f9542ae517a061eb6c8e4425c6b36 /include
parent0006707723233cb2a9a23ca19fc3d0864835704c (diff)
block: bump max plugged deferred size from 16 to 32
Particularly for NVMe with efficient deferred submission for many requests, there are nice benefits to be seen by bumping the default max plug count from 16 to 32. This is especially true for virtualized setups, where the submit part is more expensive. But can be noticed even on native hardware. Reduce the multiple queue factor from 4 to 2, since we're changing the default size. While changing it, move the defines into the block layer private header. These aren't values that anyone outside of the block layer uses, or should use. Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/blkdev.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b19172db7eef..472b4ab007c6 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -727,8 +727,6 @@ struct blk_plug {
bool multiple_queues;
bool nowait;
};
-#define BLK_MAX_REQUEST_COUNT 16
-#define BLK_PLUG_FLUSH_SIZE (128 * 1024)
struct blk_plug_cb;
typedef void (*blk_plug_cb_fn)(struct blk_plug_cb *, bool);