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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-18 08:07:51 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-18 08:07:51 -0800
commit7f0f598a0069d1ab072375965a4b69137233169c (patch)
tree00cb9320e0caef179d6075b54fa611de6551e3e2 /drivers/block
parenta6a0c4ca7edb378a8a7332501f097089cb1051c4 (diff)
parentc26156b2534c75bb3cdedf76f6ad1340971cf5bd (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: hold extra reference to bio in blk_rq_map_user_iov() relay: fix cpu offline problem Release old elevator on change elevator block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash block/md: fix md autodetection block: make add_partition() return pointer to hd_struct block: fix add_partition() error path
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/xen-blkfront.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index b220c686089..2d19f0cc47f 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -338,12 +338,18 @@ wait:
static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size)
{
struct request_queue *rq;
+ elevator_t *old_e;
rq = blk_init_queue(do_blkif_request, &blkif_io_lock);
if (rq == NULL)
return -1;
- elevator_init(rq, "noop");
+ old_e = rq->elevator;
+ if (IS_ERR_VALUE(elevator_init(rq, "noop")))
+ printk(KERN_WARNING
+ "blkfront: Switch elevator failed, use default\n");
+ else
+ elevator_exit(old_e);
/* Hard sector size and max sectors impersonate the equiv. hardware. */
blk_queue_hardsect_size(rq, sector_size);