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authorChristoph Hellwig <hch@lst.de>2016-12-09 14:19:06 +0100
committerJens Axboe <axboe@fb.com>2016-12-09 08:29:35 -0700
commitbe07e14f96e3121483339a64d917fddb3b86ba98 (patch)
tree12059820b1fd1db5a5de2365bbc35b8ee4d0732e
parenta897b6664e9565c980f76af1c123cb0597d79822 (diff)
blk-wbt: don't throttle discard or write zeroes
Both of these are metadata only commands that are not issued by the writeback code and not directly relevant to the writeback bandwith. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--block/blk-wbt.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index d500e43da5d9..6e82769f4042 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -575,10 +575,9 @@ static inline bool wbt_should_throttle(struct rq_wb *rwb, struct bio *bio)
const int op = bio_op(bio);
/*
- * If not a WRITE (or a discard or write zeroes), do nothing
+ * If not a WRITE, do nothing
*/
- if (!(op == REQ_OP_WRITE || op == REQ_OP_DISCARD ||
- op == REQ_OP_WRITE_ZEROES))
+ if (op != REQ_OP_WRITE)
return false;
/*