/*
* for flush operations
*/
- unsigned int flush_flags;
- unsigned int flush_not_queueable:1;
struct blk_flush_queue *fq;
struct list_head requeue_list;
#define QUEUE_FLAG_INIT_DONE 20 /* queue is initialized */
#define QUEUE_FLAG_NO_SG_MERGE 21 /* don't attempt to merge SG segments*/
#define QUEUE_FLAG_POLL 22 /* IO polling enabled if set */
+#define QUEUE_FLAG_WC 23 /* Write back caching */
+#define QUEUE_FLAG_FUA 24 /* device supports FUA writes */
+#define QUEUE_FLAG_FLUSH_NQ 25 /* flush not queueuable */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
extern void blk_rq_set_block_pc(struct request *);
extern void blk_requeue_request(struct request_queue *, struct request *);
extern void blk_add_request_payload(struct request *rq, struct page *page,
- unsigned int len);
+ int offset, unsigned int len);
extern int blk_lld_busy(struct request_queue *q);
extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
struct bio_set *bs, gfp_t gfp_mask,
extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
-extern void blk_queue_flush(struct request_queue *q, unsigned int flush);
extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
+extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);
extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
static inline bool queue_flush_queueable(struct request_queue *q)
{
- return !q->flush_not_queueable;
+ return !test_bit(QUEUE_FLAG_FLUSH_NQ, &q->queue_flags);
}
typedef struct {struct page *v;} Sector;
static inline void put_dev_sector(Sector p)
{
- page_cache_release(p.v);
+ put_page(p.v);
}
static inline bool __bvec_gap_to_prev(struct request_queue *q,