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[BLOCK] add @uptodate to end_that_request_last() and @error to rq_end_io_fn()

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add @uptodate argument to end_that_request_last() and @error
to rq_end_io_fn().  there's no generic way to pass error code
to request completion function, making generic error handling
of non-fs request difficult (rq->errors is driver-specific and
each driver uses it differently).  this patch adds @uptodate
to end_that_request_last() and @error to rq_end_io_fn().

for fs requests, this doesn't really matter, so just using the
same uptodate argument used in the last call to
end_that_request_first() should suffice.  imho, this can also
help the generic command-carrying request jens is working on.

Signed-off-by: tejun heo <htejun@gmail.com>
Signed-Off-By: Jens Axboe <axboe@suse.de>
This commit is contained in:
Tejun Heo 2006-01-06 09:49:03 +01:00 • committed by Jens Axboe
parent 64100099ed
commit 8ffdc6550c
21 changed files with 42 additions and 34 deletions
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6
include/linux/blkdev.h
View file

@ -102,7 +102,7 @@ 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 *);
typedef void (rq_end_io_fn)(struct request *, int);
struct request_list {
int count[2];
@ -560,7 +560,7 @@ extern void register_disk(struct gendisk *dev);
extern void generic_make_request(struct bio *bio);
extern void blk_put_request(struct request *);
extern void __blk_put_request(request_queue_t *, struct request *);
extern void blk_end_sync_rq(struct request *rq);
extern void blk_end_sync_rq(struct request *rq, int error);
extern void blk_attempt_remerge(request_queue_t *, struct request *);
extern struct request *blk_get_request(request_queue_t *, int, gfp_t);
extern void blk_insert_request(request_queue_t *, struct request *, int, void *);
@ -614,7 +614,7 @@ static inline void blk_run_address_space(struct address_space *mapping)
*/
extern int end_that_request_first(struct request *, int, int);
extern int end_that_request_chunk(struct request *, int, int);
extern void end_that_request_last(struct request *);
extern void end_that_request_last(struct request *, int);
extern void end_request(struct request *req, int uptodate);
/*