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authorMartin K. Petersen <martin.petersen@oracle.com>2009-06-16 02:23:52 -0400
committerJens Axboe <jens.axboe@oracle.com>2009-06-16 02:23:52 -0400
commite475bba2fdee9c3dbfe25f026f8fb8de69508ad2 (patch)
treecb2a050b58fbd8cd7a4d82349164622fedc2c6d0 /include/linux/blkdev.h
parent6923715ae39ed39ac2fc1993e5061668f4f71ad0 (diff)
block: Introduce helper to reset queue limits to default values
DM reuses the request queue when swapping in a new device table Introduce blk_set_default_limits() which can be used to reset the the queue_limits prior to stacking devices. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Alasdair G Kergon <agk@redhat.com> Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0b1a6cae9de1..8963d9149b5f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -926,6 +926,7 @@ extern void blk_queue_alignment_offset(struct request_queue *q,
926 unsigned int alignment); 926 unsigned int alignment);
927extern void blk_queue_io_min(struct request_queue *q, unsigned int min); 927extern void blk_queue_io_min(struct request_queue *q, unsigned int min);
928extern void blk_queue_io_opt(struct request_queue *q, unsigned int opt); 928extern void blk_queue_io_opt(struct request_queue *q, unsigned int opt);
929extern void blk_set_default_limits(struct queue_limits *lim);
929extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, 930extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
930 sector_t offset); 931 sector_t offset);
931extern void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, 932extern void disk_stack_limits(struct gendisk *disk, struct block_device *bdev,