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block: Use accessor functions for queue limits

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Convert all external users of queue limits to using wrapper functions
instead of poking the request queue variables directly.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Martin K. Petersen
2009-05-22 17:17:50 -04:00
committed by Jens Axboe
parent e1defc4ff0
commit ae03bf639a
25 changed files with 147 additions and 97 deletions
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36
include/linux/blkdev.h
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@ -898,6 +898,7 @@ extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
extern void blk_queue_max_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_phys_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_hw_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
@ -988,6 +989,41 @@ extern void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter);
#define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist)
static inline unsigned long queue_bounce_pfn(struct request_queue *q)
{
return q->bounce_pfn;
}
static inline unsigned long queue_segment_boundary(struct request_queue *q)
{
return q->seg_boundary_mask;
}
static inline unsigned int queue_max_sectors(struct request_queue *q)
{
return q->max_sectors;
}
static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
{
return q->max_hw_sectors;
}
static inline unsigned short queue_max_hw_segments(struct request_queue *q)
{
return q->max_hw_segments;
}
static inline unsigned short queue_max_phys_segments(struct request_queue *q)
{
return q->max_phys_segments;
}
static inline unsigned int queue_max_segment_size(struct request_queue *q)
{
return q->max_segment_size;
}
static inline unsigned short queue_logical_block_size(struct request_queue *q)
{
int retval = 512;