From: Christoph Hellwig <hch@lst.de>
To: Shaohua Li <shli@fb.com>, neilb@suse.de
Cc: dan.j.williams@intel.com, Kernel-team@fb.com, linux-raid@vger.kernel.org
Subject: [PATCH 07/11] raid5-cache: take rdev->data_offset into account early on
Date: Mon, 5 Oct 2015 09:31:12 +0200 [thread overview]
Message-ID: <1444030276-30850-8-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1444030276-30850-1-git-send-email-hch@lst.de>
Set up bi_sector properly when we allocate an bio instead of updating it
at submission time.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/md/raid5-cache.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 4d4dc4d..f3958e5 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -271,11 +271,8 @@ static void r5l_submit_current_io(struct r5l_log *log)
__r5l_set_io_unit_state(io, IO_UNIT_IO_START);
spin_unlock_irqrestore(&log->io_list_lock, flags);
- while ((bio = bio_list_pop(&io->bios))) {
- /* all IO must start from rdev->data_offset */
- bio->bi_iter.bi_sector += log->rdev->data_offset;
+ while ((bio = bio_list_pop(&io->bios)))
submit_bio(WRITE, bio);
- }
}
static struct bio *r5l_bio_alloc(struct r5l_log *log, struct r5l_io_unit *io)
@@ -284,7 +281,7 @@ static struct bio *r5l_bio_alloc(struct r5l_log *log, struct r5l_io_unit *io)
bio->bi_rw = WRITE;
bio->bi_bdev = log->rdev->bdev;
- bio->bi_iter.bi_sector = log->log_start;
+ bio->bi_iter.bi_sector = log->rdev->data_offset + log->log_start;
bio->bi_end_io = r5l_log_endio;
bio->bi_private = io;
--
1.9.1
next prev parent reply other threads:[~2015-10-05 7:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-05 7:31 raid5-cache I/O path improvements V3 Christoph Hellwig
2015-10-05 7:31 ` [PATCH 01/11] raid5-cache: free I/O units earlier Christoph Hellwig
2015-10-05 7:31 ` [PATCH 02/11] raid5-cache: rename flushed_ios to finished_ios Christoph Hellwig
2015-10-05 7:31 ` [PATCH 03/11] raid5-cache: factor out a helper to run all stripes for an I/O unit Christoph Hellwig
2015-10-05 7:31 ` [PATCH 04/11] raid5-cache: simplify state machine when caches flushes are not needed Christoph Hellwig
2015-10-05 7:31 ` [PATCH 05/11] raid5-cache: clean up r5l_get_meta Christoph Hellwig
2015-10-05 7:31 ` [PATCH 06/11] raid5-cache: refactor bio allocation Christoph Hellwig
2015-10-05 7:31 ` Christoph Hellwig [this message]
2015-10-05 7:31 ` [PATCH 08/11] raid5-cache: inline r5l_alloc_io_unit into r5l_new_meta Christoph Hellwig
2015-10-05 7:31 ` [PATCH 09/11] raid5-cache: new helper: r5_reserve_log_entry Christoph Hellwig
2015-10-05 7:31 ` [PATCH 10/11] raid5-cache: small log->seq cleanup Christoph Hellwig
2015-10-05 7:31 ` [PATCH 11/11] raid5-cache: use bio chaining Christoph Hellwig
2015-10-06 18:14 ` raid5-cache I/O path improvements V3 Shaohua Li
2015-10-08 2:45 ` Neil Brown
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