path: root/block/elevator.c
diff options
authorChristoph Hellwig <>2016-10-28 08:48:16 -0600
committerJens Axboe <>2016-10-28 08:48:16 -0600
commitef295ecf090d3e86e5b742fc6ab34f1122a43773 (patch)
treee52e8be789b5654dfc43f626c50261f80615c03f /block/elevator.c
parente806402130c9c494e22c73ae9ead4e79d2a5811c (diff)
block: better op and flags encoding
Now that we don't need the common flags to overflow outside the range of a 32-bit type we can encode them the same way for both the bio and request fields. This in addition allows us to place the operation first (and make some room for more ops while we're at it) and to stop having to shift around the operation values. In addition this allows passing around only one value in the block layer instead of two (and eventuall also in the file systems, but we can do that later) and thus clean up a lot of code. Last but not least this allows decreasing the size of the cmd_flags field in struct request to 32-bits. Various functions passing this value could also be updated, but I'd like to avoid the churn for now. Signed-off-by: Christoph Hellwig <> Signed-off-by: Jens Axboe <>
Diffstat (limited to 'block/elevator.c')
1 files changed, 2 insertions, 2 deletions
diff --git a/block/elevator.c b/block/elevator.c
index ac80f89..a18a5db 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -714,12 +714,12 @@ void elv_put_request(struct request_queue *q, struct request *rq)
-int elv_may_queue(struct request_queue *q, int op, int op_flags)
+int elv_may_queue(struct request_queue *q, unsigned int op)
struct elevator_queue *e = q->elevator;
if (e->type->ops.elevator_may_queue_fn)
- return e->type->ops.elevator_may_queue_fn(q, op, op_flags);
+ return e->type->ops.elevator_may_queue_fn(q, op);