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| author | David Woodhouse <David.Woodhouse@intel.com> | 2008-08-09 16:22:17 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:01 +0200 |
| commit | d628eaef310533767ce68664873869c2d7f78f09 (patch) | |
| tree | 12d6a9e6db000d89deb7ab01d55d2e7b9e6f42c5 /block | |
| parent | 36144077bce9f89763ce994bc631cbd1c9db7785 (diff) | |
| download | linux-stable-d628eaef310533767ce68664873869c2d7f78f09.tar.gz linux-stable-d628eaef310533767ce68664873869c2d7f78f09.tar.bz2 linux-stable-d628eaef310533767ce68664873869c2d7f78f09.zip | |
Fix up comments about matching flags between bio and rq
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index b5776c1fd52a..a496727df7ef 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -624,10 +624,6 @@ blk_alloc_request(struct request_queue *q, int rw, int priv, gfp_t gfp_mask) blk_rq_init(q, rq); - /* - * first three bits are identical in rq->cmd_flags and bio->bi_rw, - * see bio.h and blkdev.h - */ rq->cmd_flags = rw | REQ_ALLOCED; if (priv) { @@ -2012,7 +2008,8 @@ EXPORT_SYMBOL_GPL(blk_end_request_callback); void blk_rq_bio_prep(struct request_queue *q, struct request *rq, struct bio *bio) { - /* first two bits are identical in rq->cmd_flags and bio->bi_rw */ + /* Bit 0 (R/W) is identical in rq->cmd_flags and bio->bi_rw, and + we want BIO_RW_AHEAD (bit 1) to imply REQ_FAILFAST (bit 1). */ rq->cmd_flags |= (bio->bi_rw & 3); rq->nr_phys_segments = bio_phys_segments(q, bio); |