From a3e7689bfaae031177ebbb257d5a704b47236044 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 16 May 2022 08:36:54 +0200 Subject: block: cleanup the VM accounting in submit_bio submit_bio uses some extremely convoluted checks and confusing comments to only account REQ_OP_READ/REQ_OP_WRITE comments. Just switch to the plain obvious checks instead. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220516063654.2782792-1-hch@lst.de [axboe: fixup WRITE -> REQ_OP_WRITE] Signed-off-by: Jens Axboe --- block/blk-core.c | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-) (limited to 'block/blk-core.c') diff --git a/block/blk-core.c b/block/blk-core.c index c3f1e46ddd43..23312df7d25d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -892,19 +892,11 @@ void submit_bio(struct bio *bio) if (blkcg_punt_bio_submit(bio)) return; - /* - * If it's a regular read/write or a barrier with data attached, - * go through the normal accounting stuff before submission. - */ - if (bio_has_data(bio)) { - unsigned int count = bio_sectors(bio); - - if (op_is_write(bio_op(bio))) { - count_vm_events(PGPGOUT, count); - } else { - task_io_account_read(bio->bi_iter.bi_size); - count_vm_events(PGPGIN, count); - } + if (bio_op(bio) == REQ_OP_READ) { + task_io_account_read(bio->bi_iter.bi_size); + count_vm_events(PGPGIN, bio_sectors(bio)); + } else if (bio_op(bio) == REQ_OP_WRITE) { + count_vm_events(PGPGOUT, bio_sectors(bio)); } /* -- cgit v1.2.3