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authorRoger Pau Monne <roger.pau@citrix.com>2013-06-21 14:56:54 +0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-06-21 23:58:55 +0400
commit294caaf29c26cfed3b446fb46393b8b39ea1c0d3 (patch)
tree71713c397582c01d7fa75bfc17de38fdf563e00c /drivers/block/xen-blkfront.c
parent2d9105433ff471d2c688817e98804029c074a623 (diff)
downloadlinux-294caaf29c26cfed3b446fb46393b8b39ea1c0d3.tar.xz
xen-blkfront: set blk_queue_max_hw_sectors correctly
Now that indirect segments are enabled blk_queue_max_hw_sectors must be set to match the maximum number of sectors we can handle in a request. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reported-by: Felipe Franciosi <felipe.franciosi@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/block/xen-blkfront.c')
-rw-r--r--drivers/block/xen-blkfront.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 1a0f67c10ec7..2e1ee348ffe1 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -633,7 +633,7 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size,
/* Hard sector size and max sectors impersonate the equiv. hardware. */
blk_queue_logical_block_size(rq, sector_size);
blk_queue_physical_block_size(rq, physical_sector_size);
- blk_queue_max_hw_sectors(rq, 512);
+ blk_queue_max_hw_sectors(rq, (segments * PAGE_SIZE) / 512);
/* Each segment in a request is up to an aligned page in size. */
blk_queue_segment_boundary(rq, PAGE_SIZE - 1);