unsigned int io_opt;
unsigned int max_discard_sectors;
unsigned int max_hw_discard_sectors;
- unsigned int max_write_same_sectors;
unsigned int max_write_zeroes_sectors;
unsigned int max_zone_append_sectors;
unsigned int discard_granularity;
return min(q->limits.max_discard_sectors,
UINT_MAX >> SECTOR_SHIFT);
- if (unlikely(op == REQ_OP_WRITE_SAME))
- return q->limits.max_write_same_sectors;
-
if (unlikely(op == REQ_OP_WRITE_ZEROES))
return q->limits.max_write_zeroes_sectors;
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
unsigned int max_discard_sectors);
-extern void blk_queue_max_write_same_sectors(struct request_queue *q,
- unsigned int max_write_same_sectors);
extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
unsigned int max_write_same_sectors);
extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
extern void blk_io_schedule(void);
-extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, struct page *page);
-
#define BLKDEV_DISCARD_SECURE (1 << 0) /* issue a secure erase */
extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
return q->limits.discard_alignment;
}
-static inline unsigned int bdev_write_same(struct block_device *bdev)
-{
- struct request_queue *q = bdev_get_queue(bdev);
-
- if (q)
- return q->limits.max_write_same_sectors;
-
- return 0;
-}
-
static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);