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block: add a separate operation type for secure erase

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Instead of overloading the discard support with the REQ_SECURE flag.
Use the opportunity to rename the queue flag as well, and remove the
dead checks for this flag in the RAID 1 and RAID 10 drivers that don't
claim support for secure erase.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2016-06-09 16:00:36 +02:00
committed by Jens Axboe
parent 56332f02a5
commit 288dab8a35
12 changed files with 63 additions and 65 deletions
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6
block/blk-merge.c
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@@ -649,8 +649,7 @@ static int attempt_merge(struct request_queue *q, struct request *req,
if (!rq_mergeable(req) || !rq_mergeable(next))
return 0;
if (!blk_check_merge_flags(req->cmd_flags, req_op(req), next->cmd_flags,
req_op(next)))
if (req_op(req) != req_op(next))
return 0;
/*
@@ -752,8 +751,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
if (!rq_mergeable(rq) || !bio_mergeable(bio))
return false;
if (!blk_check_merge_flags(rq->cmd_flags, req_op(rq), bio->bi_rw,
bio_op(bio)))
if (req_op(rq) != bio_op(bio))
return false;
/* different data direction or already started, don't merge */