[PATCH 04/32] block: prepare blkdev_issue_discard for bi_rw split

From: mchristi
Date: Wed Nov 04 2015 - 11:36:26 EST

From: Mike Christie <mchristi@xxxxxxxxxx>

The next patches will prepare the submit_bio users
for the split. There were a lot more users than
there were for submit_bio_wait, so if the conversion
was not a one liner, I broke it out into its own

This patch prepares blkdev_issue_discard.

There is some compat code left which will be dropped
in later patches in the series.
1. REQ_WRITE is still being set. This is because a lot
of code assumes it will be set for discard, flushes and
write sames.
2. submit_bio is still taking a bitmap. This is to make
the series git bisectable.

Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx>
block/blk-lib.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/block/blk-lib.c b/block/blk-lib.c
index 9ebf653..0861c7a 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -42,7 +42,8 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
struct request_queue *q = bdev_get_queue(bdev);
- int type = REQ_WRITE | REQ_DISCARD;
+ int op = REQ_OP_DISCARD;
+ int op_flags = REQ_WRITE;
unsigned int granularity;
int alignment;
struct bio_batch bb;
@@ -63,7 +64,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
if (!blk_queue_secdiscard(q))
- type |= REQ_SECURE;
+ op_flags |= REQ_SECURE;

atomic_set(&bb.done, 1);
@@ -108,7 +109,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector = end_sect;

- submit_bio(type, bio);
+ submit_bio(op | op_flags, bio);

* We can loop for a long time in here, if someone does

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