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Commit 69daf03a authored Sep 06, 2017 by Tang Junhui Committed by Jens Axboe Sep 06, 2017

bcache: do not subtract sectors_to_gc for bypassed IO



Since bypassed IOs use no bucket, so do not subtract sectors_to_gc to
trigger gc thread.

Signed-off-by: tang.junhui <tang.junhui@zte.com.cn>
Acked-by: Coly Li <colyli@suse.de>
Reviewed-by: Eric Wheeler <bcache@linux.ewheeler.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent c81ffa32

drivers/md/bcache/request.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -196,12 +196,12 @@ static void bch_data_insert_start(struct closure *cl)
		struct data_insert_op *op = container_of(cl, struct data_insert_op, cl);
		struct bio bio = op->bio, n;

		if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0)
		wake_up_gc(op->c);

		if (op->bypass)
		return bch_data_invalidate(cl);

		if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0)
		wake_up_gc(op->c);

		/*
		* Journal writes are marked REQ_PREFLUSH; if the original write was a
		* flush, it'll wait on the journal write.