diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-09-24 08:51:33 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-09-24 21:43:39 +0200 |
| commit | 16ef510139315a2147ee7525796f8dbd4e4b7864 (patch) | |
| tree | fb7a247ab98244ef62a49a3349324951f3222c3c /drivers/md/raid5.c | |
| parent | bdi: initialize ->ra_pages and ->io_pages in bdi_init (diff) | |
| download | linux-16ef510139315a2147ee7525796f8dbd4e4b7864.tar.xz linux-16ef510139315a2147ee7525796f8dbd4e4b7864.zip | |
md: update the optimal I/O size on reshape
The raid5 and raid10 drivers currently update the read-ahead size,
but not the optimal I/O size on reshape. To prepare for deriving the
read-ahead size from the optimal I/O size make sure it is updated
as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 225380efd1e2..9a7d1250894e 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7232,6 +7232,12 @@ static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded return 0; } +static void raid5_set_io_opt(struct r5conf *conf) +{ + blk_queue_io_opt(conf->mddev->queue, (conf->chunk_sectors << 9) * + (conf->raid_disks - conf->max_degraded)); +} + static int raid5_run(struct mddev *mddev) { struct r5conf *conf; @@ -7521,8 +7527,7 @@ static int raid5_run(struct mddev *mddev) chunk_size = mddev->chunk_sectors << 9; blk_queue_io_min(mddev->queue, chunk_size); - blk_queue_io_opt(mddev->queue, chunk_size * - (conf->raid_disks - conf->max_degraded)); + raid5_set_io_opt(conf); mddev->queue->limits.raid_partial_stripes_expensive = 1; /* * We can only discard a whole stripe. It doesn't make sense to @@ -8115,6 +8120,7 @@ static void end_reshape(struct r5conf *conf) / PAGE_SIZE); if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + raid5_set_io_opt(conf); } } } |