X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fbio.c;h=5f604f269dfa87e26d24b97dbb945b333697f675;hb=4a66af9eaa9531372cfcb9e20103ed147c729ff9;hp=33e46340a76666ebca0bc1b8aa3a40f44d6d1535;hpb=99e1221d1a1edac316f7f8116c781f75733b1159;p=linux-2.6

diff --git a/fs/bio.c b/fs/bio.c
index 33e46340a7..5f604f269d 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -230,7 +230,7 @@ void bio_put(struct bio *bio)
 	}
 }
 
-inline int bio_phys_segments(request_queue_t *q, struct bio *bio)
+inline int bio_phys_segments(struct request_queue *q, struct bio *bio)
 {
 	if (unlikely(!bio_flagged(bio, BIO_SEG_VALID)))
 		blk_recount_segments(q, bio);
@@ -238,7 +238,7 @@ inline int bio_phys_segments(request_queue_t *q, struct bio *bio)
 	return bio->bi_phys_segments;
 }
 
-inline int bio_hw_segments(request_queue_t *q, struct bio *bio)
+inline int bio_hw_segments(struct request_queue *q, struct bio *bio)
 {
 	if (unlikely(!bio_flagged(bio, BIO_SEG_VALID)))
 		blk_recount_segments(q, bio);
@@ -257,7 +257,7 @@ inline int bio_hw_segments(request_queue_t *q, struct bio *bio)
  */
 void __bio_clone(struct bio *bio, struct bio *bio_src)
 {
-	request_queue_t *q = bdev_get_queue(bio_src->bi_bdev);
+	struct request_queue *q = bdev_get_queue(bio_src->bi_bdev);
 
 	memcpy(bio->bi_io_vec, bio_src->bi_io_vec,
 		bio_src->bi_max_vecs * sizeof(struct bio_vec));
@@ -303,7 +303,7 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
  */
 int bio_get_nr_vecs(struct block_device *bdev)
 {
-	request_queue_t *q = bdev_get_queue(bdev);
+	struct request_queue *q = bdev_get_queue(bdev);
 	int nr_pages;
 
 	nr_pages = ((q->max_sectors << 9) + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -315,7 +315,7 @@ int bio_get_nr_vecs(struct block_device *bdev)
 	return nr_pages;
 }
 
-static int __bio_add_page(request_queue_t *q, struct bio *bio, struct page
+static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
 			  *page, unsigned int len, unsigned int offset,
 			  unsigned short max_sectors)
 {
@@ -425,7 +425,7 @@ static int __bio_add_page(request_queue_t *q, struct bio *bio, struct page
  *      smaller than PAGE_SIZE, so it is always possible to add a single
  *      page to an empty bio. This should only be used by REQ_PC bios.
  */
-int bio_add_pc_page(request_queue_t *q, struct bio *bio, struct page *page,
+int bio_add_pc_page(struct request_queue *q, struct bio *bio, struct page *page,
 		    unsigned int len, unsigned int offset)
 {
 	return __bio_add_page(q, bio, page, len, offset, q->max_hw_sectors);
@@ -523,7 +523,7 @@ int bio_uncopy_user(struct bio *bio)
  *	to/from kernel pages as necessary. Must be paired with
  *	call bio_uncopy_user() on io completion.
  */
-struct bio *bio_copy_user(request_queue_t *q, unsigned long uaddr,
+struct bio *bio_copy_user(struct request_queue *q, unsigned long uaddr,
 			  unsigned int len, int write_to_vm)
 {
 	unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -600,7 +600,7 @@ out_bmd:
 	return ERR_PTR(ret);
 }
 
-static struct bio *__bio_map_user_iov(request_queue_t *q,
+static struct bio *__bio_map_user_iov(struct request_queue *q,
 				      struct block_device *bdev,
 				      struct sg_iovec *iov, int iov_count,
 				      int write_to_vm)
@@ -712,7 +712,7 @@ static struct bio *__bio_map_user_iov(request_queue_t *q,
 
 /**
  *	bio_map_user	-	map user address into bio
- *	@q: the request_queue_t for the bio
+ *	@q: the struct request_queue for the bio
  *	@bdev: destination block device
  *	@uaddr: start of user address
  *	@len: length in bytes
@@ -721,7 +721,7 @@ static struct bio *__bio_map_user_iov(request_queue_t *q,
  *	Map the user space address into a bio suitable for io to a block
  *	device. Returns an error pointer in case of error.
  */
-struct bio *bio_map_user(request_queue_t *q, struct block_device *bdev,
+struct bio *bio_map_user(struct request_queue *q, struct block_device *bdev,
 			 unsigned long uaddr, unsigned int len, int write_to_vm)
 {
 	struct sg_iovec iov;
@@ -734,7 +734,7 @@ struct bio *bio_map_user(request_queue_t *q, struct block_device *bdev,
 
 /**
  *	bio_map_user_iov - map user sg_iovec table into bio
- *	@q: the request_queue_t for the bio
+ *	@q: the struct request_queue for the bio
  *	@bdev: destination block device
  *	@iov:	the iovec.
  *	@iov_count: number of elements in the iovec
@@ -743,7 +743,7 @@ struct bio *bio_map_user(request_queue_t *q, struct block_device *bdev,
  *	Map the user space address into a bio suitable for io to a block
  *	device. Returns an error pointer in case of error.
  */
-struct bio *bio_map_user_iov(request_queue_t *q, struct block_device *bdev,
+struct bio *bio_map_user_iov(struct request_queue *q, struct block_device *bdev,
 			     struct sg_iovec *iov, int iov_count,
 			     int write_to_vm)
 {
@@ -798,17 +798,13 @@ void bio_unmap_user(struct bio *bio)
 	bio_put(bio);
 }
 
-static int bio_map_kern_endio(struct bio *bio, unsigned int bytes_done, int err)
+static void bio_map_kern_endio(struct bio *bio, int err)
 {
-	if (bio->bi_size)
-		return 1;
-
 	bio_put(bio);
-	return 0;
 }
 
 
-static struct bio *__bio_map_kern(request_queue_t *q, void *data,
+static struct bio *__bio_map_kern(struct request_queue *q, void *data,
 				  unsigned int len, gfp_t gfp_mask)
 {
 	unsigned long kaddr = (unsigned long)data;
@@ -847,7 +843,7 @@ static struct bio *__bio_map_kern(request_queue_t *q, void *data,
 
 /**
  *	bio_map_kern	-	map kernel address into bio
- *	@q: the request_queue_t for the bio
+ *	@q: the struct request_queue for the bio
  *	@data: pointer to buffer to map
  *	@len: length in bytes
  *	@gfp_mask: allocation flags for bio allocation
@@ -855,7 +851,7 @@ static struct bio *__bio_map_kern(request_queue_t *q, void *data,
  *	Map the kernel address into a bio suitable for io to a block
  *	device. Returns an error pointer in case of error.
  */
-struct bio *bio_map_kern(request_queue_t *q, void *data, unsigned int len,
+struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len,
 			 gfp_t gfp_mask)
 {
 	struct bio *bio;
@@ -1002,34 +998,26 @@ void bio_check_pages_dirty(struct bio *bio)
 /**
  * bio_endio - end I/O on a bio
  * @bio:	bio
- * @bytes_done:	number of bytes completed
  * @error:	error, if any
  *
  * Description:
- *   bio_endio() will end I/O on @bytes_done number of bytes. This may be
- *   just a partial part of the bio, or it may be the whole bio. bio_endio()
- *   is the preferred way to end I/O on a bio, it takes care of decrementing
- *   bi_size and clearing BIO_UPTODATE on error. @error is 0 on success, and
- *   and one of the established -Exxxx (-EIO, for instance) error values in
- *   case something went wrong. Noone should call bi_end_io() directly on
- *   a bio unless they own it and thus know that it has an end_io function.
+ *   bio_endio() will end I/O on the whole bio. bio_endio() is the
+ *   preferred way to end I/O on a bio, it takes care of clearing
+ *   BIO_UPTODATE on error. @error is 0 on success, and and one of the
+ *   established -Exxxx (-EIO, for instance) error values in case
+ *   something went wrong. Noone should call bi_end_io() directly on a
+ *   bio unless they own it and thus know that it has an end_io
+ *   function.
  **/
-void bio_endio(struct bio *bio, unsigned int bytes_done, int error)
+void bio_endio(struct bio *bio, int error)
 {
 	if (error)
 		clear_bit(BIO_UPTODATE, &bio->bi_flags);
-
-	if (unlikely(bytes_done > bio->bi_size)) {
-		printk("%s: want %u bytes done, only %u left\n", __FUNCTION__,
-						bytes_done, bio->bi_size);
-		bytes_done = bio->bi_size;
-	}
-
-	bio->bi_size -= bytes_done;
-	bio->bi_sector += (bytes_done >> 9);
+	else if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
+		error = -EIO;
 
 	if (bio->bi_end_io)
-		bio->bi_end_io(bio, bytes_done, error);
+		bio->bi_end_io(bio, error);
 }
 
 void bio_pair_release(struct bio_pair *bp)
@@ -1037,37 +1025,29 @@ void bio_pair_release(struct bio_pair *bp)
 	if (atomic_dec_and_test(&bp->cnt)) {
 		struct bio *master = bp->bio1.bi_private;
 
-		bio_endio(master, master->bi_size, bp->error);
+		bio_endio(master, bp->error);
 		mempool_free(bp, bp->bio2.bi_private);
 	}
 }
 
-static int bio_pair_end_1(struct bio * bi, unsigned int done, int err)
+static void bio_pair_end_1(struct bio *bi, int err)
 {
 	struct bio_pair *bp = container_of(bi, struct bio_pair, bio1);
 
 	if (err)
 		bp->error = err;
 
-	if (bi->bi_size)
-		return 1;
-
 	bio_pair_release(bp);
-	return 0;
 }
 
-static int bio_pair_end_2(struct bio * bi, unsigned int done, int err)
+static void bio_pair_end_2(struct bio *bi, int err)
 {
 	struct bio_pair *bp = container_of(bi, struct bio_pair, bio2);
 
 	if (err)
 		bp->error = err;
 
-	if (bi->bi_size)
-		return 1;
-
 	bio_pair_release(bp);
-	return 0;
 }
 
 /*
@@ -1187,7 +1167,7 @@ static void __init biovec_init_slabs(void)
 
 		size = bvs->nr_vecs * sizeof(struct bio_vec);
 		bvs->slab = kmem_cache_create(bvs->name, size, 0,
-                                SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
+                                SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
 	}
 }