block: move internal_tag to same cache line as tag



Since we removed cmd_type, we now have a hole in the struct. Move
the internal_tag member to the same cacheline as tag, since we
use them at the same time.

This doesn't fix the hole, just moves it elsewhere.

Signed-off-by: Jens Axboe <axboe@fb.com>

parent aebf526b

include/linux/blkdev.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -138,6 +138,9 @@ struct request {
		int cpu;
		unsigned int cmd_flags; /* op and common flags */
		req_flags_t rq_flags;

		int internal_tag;

		unsigned long atomic_flags;

		/* the following two fields are internal, NEVER access directly */
		@@ -209,8 +212,6 @@ struct request {

		unsigned short ioprio;

		int internal_tag;

		void special; / opaque pointer available for LLD use */

		int errors;