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| author | David Woodhouse <David.Woodhouse@intel.com> | 2008-08-10 11:21:57 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:01 +0200 |
| commit | 27b29e86bf3d4b3cf6641a0efd78ed11a9b633b2 (patch) | |
| tree | 0cfa20e8f07ee9d57e43a5371b4d97eeb8202081 /include/linux/blktrace_api.h | |
| parent | fdc53971bce56d299cb5f1f06ecbff30b34cbaf2 (diff) | |
| download | lwn-27b29e86bf3d4b3cf6641a0efd78ed11a9b633b2.tar.gz lwn-27b29e86bf3d4b3cf6641a0efd78ed11a9b633b2.zip | |
blktrace: support discard requests
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/blktrace_api.h')
| -rw-r--r-- | include/linux/blktrace_api.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index d084b8d227a5..27da2cc682ee 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -21,6 +21,7 @@ enum blktrace_cat { BLK_TC_NOTIFY = 1 << 10, /* special message */ BLK_TC_AHEAD = 1 << 11, /* readahead */ BLK_TC_META = 1 << 12, /* metadata */ + BLK_TC_DISCARD = 1 << 13, /* discard requests */ BLK_TC_END = 1 << 15, /* only 16-bits, reminder */ }; @@ -195,6 +196,9 @@ static inline void blk_add_trace_rq(struct request_queue *q, struct request *rq, if (likely(!bt)) return; + if (blk_discard_rq(rq)) + rw |= (1 << BIO_RW_DISCARD); + if (blk_pc_request(rq)) { what |= BLK_TC_ACT(BLK_TC_PC); __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors, sizeof(rq->cmd), rq->cmd); |