io_uring: reshuffle io_submit_state bits

struct io_submit_state's ->free_list and ->link are hotter and smaller
than ->plug, place them first.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/6ad3c15849f50b27ad012c042c73e6e069d22df7.1633532552.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 90bef81..04d6e35 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -308,19 +308,15 @@ struct io_submit_link {
 };
 
 struct io_submit_state {
-       struct blk_plug         plug;
+       /* inline/task_work completion list, under ->uring_lock */
+       struct io_wq_work_node  free_list;
+       /* batch completion logic */
+       struct io_wq_work_list  compl_reqs;
        struct io_submit_link   link;
 
        bool                    plug_started;
        bool                    need_plug;
-
-       /*
-        * Batch completion logic
-        */
-       struct io_wq_work_list  compl_reqs;
-
-       /* inline/task_work completion list, under ->uring_lock */
-       struct io_wq_work_node  free_list;
+       struct blk_plug         plug;
 };
 
 struct io_ring_ctx {