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authorJan Kara <jack@suse.cz>2014-02-24 19:39:52 +0400
committerJens Axboe <axboe@fb.com>2014-02-25 02:46:32 +0400
commit8b4922d3173d2eee7b43be8e5caec3ab7d30feff (patch)
tree171fd625657933067d47b0ef0a29f10443a21c81 /include/linux/elevator.h
parentbf36f9cfa6d3d129387b9d62f495d978ed4ade7c (diff)
downloadlinux-8b4922d3173d2eee7b43be8e5caec3ab7d30feff.tar.xz
block: Stop abusing csd.list for fifo_time
Block layer currently abuses rq->csd.list.next for storing fifo_time. That is a terrible hack and completely unnecessary as well. Union achieves the same space saving in a cleaner way. Signed-off-by: Jan Kara <jack@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jens Axboe <axboe@fb.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/elevator.h')
-rw-r--r--include/linux/elevator.h6
1 files changed, 0 insertions, 6 deletions
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 306dd8cd0b6f..0bdfd46f4735 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -202,12 +202,6 @@ enum {
#define rq_end_sector(rq) (blk_rq_pos(rq) + blk_rq_sectors(rq))
#define rb_entry_rq(node) rb_entry((node), struct request, rb_node)
-/*
- * Hack to reuse the csd.list list_head as the fifo time holder while
- * the request is in the io scheduler. Saves an unsigned long in rq.
- */
-#define rq_fifo_time(rq) ((unsigned long) (rq)->csd.list.next)
-#define rq_set_fifo_time(rq,exp) ((rq)->csd.list.next = (void *) (exp))
#define rq_entry_fifo(ptr) list_entry((ptr), struct request, queuelist)
#define rq_fifo_clear(rq) do { \
list_del_init(&(rq)->queuelist); \