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Commit 22b13210 authored by Jens Axboe's avatar Jens Axboe
Browse files

block: new end request handling interface should take unsigned byte counts 



No point in passing signed integers as the byte count, they can never
be negative.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 640e248e

block/blk-core.c

+9 −7
Original line number Diff line number Diff line
@@ -1846,8 +1846,9 @@ EXPORT_SYMBOL(end_request); 
 *     0 - we are done with this request

 *     1 - this request is not freed yet, it still has pending buffers.

 **/

static int blk_end_io(struct request *rq, int error, int nr_bytes,

		      int bidi_bytes, int (drv_callback)(struct request *))

static int blk_end_io(struct request *rq, int error, unsigned int nr_bytes,

		      unsigned int bidi_bytes,

		      int (drv_callback)(struct request *))

{

	struct request_queue *q = rq->q;

	unsigned long flags = 0UL;
@@ -1889,7 +1890,7 @@ static int blk_end_io(struct request *rq, int error, int nr_bytes, 
 *     0 - we are done with this request

 *     1 - still buffers pending for this request

 **/

int blk_end_request(struct request *rq, int error, int nr_bytes)

int blk_end_request(struct request *rq, int error, unsigned int nr_bytes)

{

	return blk_end_io(rq, error, nr_bytes, 0, NULL);

}
@@ -1908,7 +1909,7 @@ EXPORT_SYMBOL_GPL(blk_end_request); 
 *     0 - we are done with this request

 *     1 - still buffers pending for this request

 **/

int __blk_end_request(struct request *rq, int error, int nr_bytes)

int __blk_end_request(struct request *rq, int error, unsigned int nr_bytes)

{

	if (blk_fs_request(rq) || blk_pc_request(rq)) {

		if (__end_that_request_first(rq, error, nr_bytes))
@@ -1937,8 +1938,8 @@ EXPORT_SYMBOL_GPL(__blk_end_request); 
 *     0 - we are done with this request

 *     1 - still buffers pending for this request

 **/

int blk_end_bidi_request(struct request *rq, int error, int nr_bytes,

			 int bidi_bytes)

int blk_end_bidi_request(struct request *rq, int error, unsigned int nr_bytes,

			 unsigned int bidi_bytes)

{

	return blk_end_io(rq, error, nr_bytes, bidi_bytes, NULL);

}
@@ -1969,7 +1970,8 @@ EXPORT_SYMBOL_GPL(blk_end_bidi_request); 
 *         this request still has pending buffers or

 *         the driver doesn't want to finish this request yet.

 **/

int blk_end_request_callback(struct request *rq, int error, int nr_bytes,

int blk_end_request_callback(struct request *rq, int error,

			     unsigned int nr_bytes,

			     int (drv_callback)(struct request *))

{

	return blk_end_io(rq, error, nr_bytes, 0, drv_callback);

include/linux/blkdev.h

+9 −6
Original line number Diff line number Diff line
@@ -655,14 +655,17 @@ static inline void blk_run_address_space(struct address_space *mapping) 
 * 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,

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 *);