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| author | Jens Axboe <jaxboe@fusionio.com> | 2011-03-02 11:08:00 -0500 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-03-10 08:45:54 +0100 |
| commit | 3cca6dc1c81e2407928dc4c6105252146fd3924f (patch) | |
| tree | b78b0d93e7c02abdc37e1d5a6204ab6b94d56fd4 /include/linux/blkdev.h | |
| parent | 53f22956effe1c9e7961b8c6e4362ecca5e460b7 (diff) | |
| download | linux-3cca6dc1c81e2407928dc4c6105252146fd3924f.tar.gz linux-3cca6dc1c81e2407928dc4c6105252146fd3924f.tar.bz2 linux-3cca6dc1c81e2407928dc4c6105252146fd3924f.zip | |
block: add API for delaying work/request_fn a little bit
Currently we use plugging for that, but as plugging is going away,
we need an alternative mechanism.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e3ee74fc5903..f55b2a8b6610 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -300,6 +300,11 @@ struct request_queue unsigned long unplug_delay; /* After this many jiffies */ struct work_struct unplug_work; + /* + * Delayed queue handling + */ + struct delayed_work delay_work; + struct backing_dev_info backing_dev_info; /* @@ -677,6 +682,7 @@ extern int blk_insert_cloned_request(struct request_queue *q, extern void blk_plug_device(struct request_queue *); extern void blk_plug_device_unlocked(struct request_queue *); extern int blk_remove_plug(struct request_queue *); +extern void blk_delay_queue(struct request_queue *, unsigned long); extern void blk_recount_segments(struct request_queue *, struct bio *); extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, unsigned int, void __user *); |