| Message ID | 20181218172537.12300-1-jaegeuk@kernel.org (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Delegated to: | Mike Snitzer |
| Headers | show |
| Series | dm: give req_size precisely given by user | expand |
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 9038c302d5c2..886790428241 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1927,6 +1927,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, */ if (blk_queue_is_zoned(q)) blk_revalidate_disk_zones(t->md->disk); + + /* io_pages is used for readahead */ + q->backing_dev_info->io_pages = limits->max_sectors >> (PAGE_SHIFT - 9); } unsigned int dm_table_get_num_targets(struct dm_table *t)
This patch makes dm be aware of io_pages to assign sane req_size for reads. Cc: stable@vger.kernel.org Cc: Jens Axboe <axboe@kernel.dk> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Fixes: 9491ae4a ("mm: don't cap request size based on read-ahead setting") Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- drivers/md/dm-table.c | 3 +++ 1 file changed, 3 insertions(+)