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Message-Id: <1408031441-31156-9-git-send-email-ming.lei@canonical.com> Date: Thu, 14 Aug 2014 23:50:39 +0800 From: Ming Lei <ming.lei@...onical.com> To: Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Dave Kleikamp <dave.kleikamp@...cle.com> Cc: Zach Brown <zab@...bo.net>, Benjamin LaHaise <bcrl@...ck.org>, Christoph Hellwig <hch@...radead.org>, Kent Overstreet <kmo@...erainc.com>, linux-aio@...ck.org, linux-fsdevel@...r.kernel.org, Dave Chinner <david@...morbit.com>, Ming Lei <ming.lei@...onical.com> Subject: [PATCH v1 8/9] block: loop: don't handle REQ_FUA explicitly block core handles REQ_FUA by its flush state machine, so won't do it in loop explicitly. Signed-off-by: Ming Lei <ming.lei@...onical.com> --- drivers/block/loop.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 3836dcc..0ce51ee 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -459,23 +459,15 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq) pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; if (rq->cmd_flags & REQ_WRITE) { - if (rq->cmd_flags & REQ_FLUSH) ret = lo_req_flush(lo, rq); - - if (rq->cmd_flags & REQ_DISCARD) { + else if (rq->cmd_flags & REQ_DISCARD) ret = lo_discard(lo, rq, pos); - goto out; - } - - ret = lo_send(lo, rq, pos); - - if ((rq->cmd_flags & REQ_FUA) && !ret) - ret = lo_req_flush(lo, rq); + else + ret = lo_send(lo, rq, pos); } else ret = lo_receive(lo, rq, lo->lo_blocksize, pos); -out: return ret; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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