struct io_context *get_io_context(gfp_t gfp_flags, int node);
struct io_context *alloc_io_context(gfp_t gfp_flags, int node);
void copy_io_context(struct io_context **pdst, struct io_context **psrc);
-void swap_io_context(struct io_context **ioc1, struct io_context **ioc2);
struct request;
typedef void (rq_end_io_fn)(struct request *, int);
unsigned int max_segment_size;
unsigned long seg_boundary_mask;
+ void *dma_drain_buffer;
+ unsigned int dma_drain_size;
unsigned int dma_alignment;
struct blk_queue_tag *queue_tags;
* blk_end_request() for parts of the original function.
* This prevents code duplication in drivers.
*/
-extern int blk_end_request(struct request *rq, int error, int nr_bytes);
-extern int __blk_end_request(struct request *rq, int error, int nr_bytes);
-extern int blk_end_bidi_request(struct request *rq, int error, int nr_bytes,
- int bidi_bytes);
+extern int blk_end_request(struct request *rq, int error,
+ unsigned int nr_bytes);
+extern int __blk_end_request(struct request *rq, int error,
+ unsigned int nr_bytes);
+extern int blk_end_bidi_request(struct request *rq, int error,
+ unsigned int nr_bytes, unsigned int bidi_bytes);
extern void end_request(struct request *, int);
extern void end_queued_request(struct request *, int);
extern void end_dequeued_request(struct request *, int);
-extern int blk_end_request_callback(struct request *rq, int error, int nr_bytes,
- int (drv_callback)(struct request *));
+extern int blk_end_request_callback(struct request *rq, int error,
+ unsigned int nr_bytes,
+ int (drv_callback)(struct request *));
extern void blk_complete_request(struct request *);
/*
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_hardsect_size(struct request_queue *, unsigned short);
extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b);
+extern int blk_queue_dma_drain(struct request_queue *q, void *buf,
+ unsigned int size);
extern void blk_queue_segment_boundary(struct request_queue *, unsigned long);
extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn);
extern void blk_queue_merge_bvec(struct request_queue *, merge_bvec_fn *);
static inline int queue_dma_alignment(struct request_queue *q)
{
- int retval = 511;
-
- if (q && q->dma_alignment)
- retval = q->dma_alignment;
-
- return retval;
+ return q ? q->dma_alignment : 511;
}
/* assumes size > 256 */
{
}
+struct io_context;
static inline int put_io_context(struct io_context *ioc)
{
return 1;