From: Roger Pau Monne Date: Fri, 21 Jun 2013 10:56:54 +0000 (+0200) Subject: xen-blkfront: set blk_queue_max_hw_sectors correctly X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=294caaf29c26cfed3b446fb46393b8b39ea1c0d3;p=openwrt%2Fstaging%2Fblogic.git 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 Reported-by: Felipe Franciosi Cc: Konrad Rzeszutek Wilk Signed-off-by: Konrad Rzeszutek Wilk --- 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);