[2/2] block: add task priority to init bio iopriority

Commit Message

Chaitanya Kulkarni April 15, 2019, 5:57 a.m. UTC

This uses the current process's ioprioty and initializes the bios
issued in the discard, write-zeroes and write-same operations.

Signed-off-by: Chaitanya Kulkarni <[e-mail]>
---
 block/blk-lib.c | 6 ++++++
 1 file changed, 6 insertions(+)

Patch

diff --git a/block/blk-lib.c b/block/blk-lib.c
index 5f2c429d4378..12c340e7637c 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -7,6 +7,7 @@ 
 #include <linux/bio.h>
 #include <linux/blkdev.h>
 #include <linux/scatterlist.h>
+#include <linux/ioprio.h>
 
 #include "blk.h"
 
@@ -64,6 +65,7 @@  int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
 		bio->bi_iter.bi_sector = sector;
 		bio_set_dev(bio, bdev);
 		bio_set_op_attrs(bio, op, 0);
+		bio_set_prio(bio, get_task_ioprio(current));
 
 		bio->bi_iter.bi_size = req_sects << 9;
 		sector += req_sects;
@@ -162,6 +164,7 @@  static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
 		bio->bi_io_vec->bv_offset = 0;
 		bio->bi_io_vec->bv_len = bdev_logical_block_size(bdev);
 		bio_set_op_attrs(bio, REQ_OP_WRITE_SAME, 0);
+		bio_set_prio(bio, get_task_ioprio(current));
 
 		if (nr_sects > max_write_same_sectors) {
 			bio->bi_iter.bi_size = max_write_same_sectors << 9;
@@ -234,6 +237,8 @@  static int __blkdev_issue_write_zeroes(struct block_device *bdev,
 		bio->bi_iter.bi_sector = sector;
 		bio_set_dev(bio, bdev);
 		bio->bi_opf = REQ_OP_WRITE_ZEROES;
+		bio_set_prio(bio, get_task_ioprio(current));
+
 		if (flags & BLKDEV_ZERO_NOUNMAP)
 			bio->bi_opf |= REQ_NOUNMAP;
 
@@ -286,6 +291,7 @@  static int __blkdev_issue_zero_pages(struct block_device *bdev,
 		bio->bi_iter.bi_sector = sector;
 		bio_set_dev(bio, bdev);
 		bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
+		bio_set_prio(bio, get_task_ioprio(current));
 
 		while (nr_sects != 0) {
 			sz = min((sector_t) PAGE_SIZE, nr_sects << 9);