From 27b29e86bf3d4b3cf6641a0efd78ed11a9b633b2 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sun, 10 Aug 2008 11:21:57 +0100 Subject: blktrace: support discard requests Signed-off-by: David Woodhouse Signed-off-by: Jens Axboe --- include/linux/blktrace_api.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index d084b8d227a..27da2cc682e 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); -- cgit v1.2.3