static void blk_unplug_timeout(unsigned long data);
static void drive_stat_acct(struct request *rq, int nr_sectors, int new_io);
static void init_request_from_bio(struct request *req, struct bio *bio);
-static int __make_request(request_queue_t *q, struct bio *bio);
+static int __make_request(struct request_queue *q, struct bio *bio);
static struct io_context *current_io_context(gfp_t gfp_flags, int node);
/*
struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev)
{
struct backing_dev_info *ret = NULL;
- request_queue_t *q = bdev_get_queue(bdev);
+ struct request_queue *q = bdev_get_queue(bdev);
if (q)
ret = &q->backing_dev_info;
* cdb from the request data for instance.
*
*/
-void blk_queue_prep_rq(request_queue_t *q, prep_rq_fn *pfn)
+void blk_queue_prep_rq(struct request_queue *q, prep_rq_fn *pfn)
{
q->prep_rq_fn = pfn;
}
* no merge_bvec_fn is defined for a queue, and only the fixed limits are
* honored.
*/
-void blk_queue_merge_bvec(request_queue_t *q, merge_bvec_fn *mbfn)
+void blk_queue_merge_bvec(struct request_queue *q, merge_bvec_fn *mbfn)
{
q->merge_bvec_fn = mbfn;
}
EXPORT_SYMBOL(blk_queue_merge_bvec);
-void blk_queue_softirq_done(request_queue_t *q, softirq_done_fn *fn)
+void blk_queue_softirq_done(struct request_queue *q, softirq_done_fn *fn)
{
q->softirq_done_fn = fn;
}
* __bio_kmap_atomic() to get a temporary kernel mapping, or by calling
* blk_queue_bounce() to create a buffer in normal memory.
**/
-void blk_queue_make_request(request_queue_t * q, make_request_fn * mfn)
+void blk_queue_make_request(struct request_queue * q, make_request_fn * mfn)
{
/*
* set defaults
EXPORT_SYMBOL(blk_queue_make_request);
-static void rq_init(request_queue_t *q, struct request *rq)
+static void rq_init(struct request_queue *q, struct request *rq)
{
INIT_LIST_HEAD(&rq->queuelist);
INIT_LIST_HEAD(&rq->donelist);
rq->end_io = NULL;
rq->end_io_data = NULL;
rq->completion_data = NULL;
+ rq->next_rq = NULL;
}
/**
* feature should call this function and indicate so.
*
**/
-int blk_queue_ordered(request_queue_t *q, unsigned ordered,
+int blk_queue_ordered(struct request_queue *q, unsigned ordered,
prepare_flush_fn *prepare_flush_fn)
{
if (ordered & (QUEUE_ORDERED_PREFLUSH | QUEUE_ORDERED_POSTFLUSH) &&
* to the block layer by defining it through this call.
*
**/
-void blk_queue_issue_flush_fn(request_queue_t *q, issue_flush_fn *iff)
+void blk_queue_issue_flush_fn(struct request_queue *q, issue_flush_fn *iff)
{
q->issue_flush_fn = iff;
}
/*
* Cache flushing for ordered writes handling
*/
-inline unsigned blk_ordered_cur_seq(request_queue_t *q)
+inline unsigned blk_ordered_cur_seq(struct request_queue *q)
{
if (!q->ordseq)
return 0;
unsigned blk_ordered_req_seq(struct request *rq)
{
- request_queue_t *q = rq->q;
+ struct request_queue *q = rq->q;
BUG_ON(q->ordseq == 0);
return QUEUE_ORDSEQ_DONE;
}
-void blk_ordered_complete_seq(request_queue_t *q, unsigned seq, int error)
+void blk_ordered_complete_seq(struct request_queue *q, unsigned seq, int error)
{
struct request *rq;
int uptodate;
blk_ordered_complete_seq(rq->q, QUEUE_ORDSEQ_POSTFLUSH, error);
}
-static void queue_flush(request_queue_t *q, unsigned which)
+static void queue_flush(struct request_queue *q, unsigned which)
{
struct request *rq;
rq_end_io_fn *end_io;
elv_insert(q, rq, ELEVATOR_INSERT_FRONT);
}
-static inline struct request *start_ordered(request_queue_t *q,
+static inline struct request *start_ordered(struct request_queue *q,
struct request *rq)
{
q->bi_size = 0;
return rq;
}
-int blk_do_ordered(request_queue_t *q, struct request **rqp)
+int blk_do_ordered(struct request_queue *q, struct request **rqp)
{
struct request *rq = *rqp;
int is_barrier = blk_fs_request(rq) && blk_barrier_rq(rq);
static int flush_dry_bio_endio(struct bio *bio, unsigned int bytes, int error)
{
- request_queue_t *q = bio->bi_private;
+ struct request_queue *q = bio->bi_private;
/*
* This is dry run, restore bio_sector and size. We'll finish
static int ordered_bio_endio(struct request *rq, struct bio *bio,
unsigned int nbytes, int error)
{
- request_queue_t *q = rq->q;
+ struct request_queue *q = rq->q;
bio_end_io_t *endio;
void *private;
* blk_queue_bounce_limit to have lower memory pages allocated as bounce
* buffers for doing I/O to pages residing above @page.
**/
-void blk_queue_bounce_limit(request_queue_t *q, u64 dma_addr)
+void blk_queue_bounce_limit(struct request_queue *q, u64 dma_addr)
{
unsigned long bounce_pfn = dma_addr >> PAGE_SHIFT;
int dma = 0;
* Enables a low level driver to set an upper limit on the size of
* received requests.
**/
-void blk_queue_max_sectors(request_queue_t *q, unsigned int max_sectors)
+void blk_queue_max_sectors(struct request_queue *q, unsigned int max_sectors)
{
if ((max_sectors << 9) < PAGE_CACHE_SIZE) {
max_sectors = 1 << (PAGE_CACHE_SHIFT - 9);
* physical data segments in a request. This would be the largest sized
* scatter list the driver could handle.
**/
-void blk_queue_max_phys_segments(request_queue_t *q, unsigned short max_segments)
+void blk_queue_max_phys_segments(struct request_queue *q,
+ unsigned short max_segments)
{
if (!max_segments) {
max_segments = 1;
* address/length pairs the host adapter can actually give as once
* to the device.
**/
-void blk_queue_max_hw_segments(request_queue_t *q, unsigned short max_segments)
+void blk_queue_max_hw_segments(struct request_queue *q,
+ unsigned short max_segments)
{
if (!max_segments) {
max_segments = 1;
* Enables a low level driver to set an upper limit on the size of a
* coalesced segment
**/
-void blk_queue_max_segment_size(request_queue_t *q, unsigned int max_size)
+void blk_queue_max_segment_size(struct request_queue *q, unsigned int max_size)
{
if (max_size < PAGE_CACHE_SIZE) {
max_size = PAGE_CACHE_SIZE;
* even internal read-modify-write operations). Usually the default
* of 512 covers most hardware.
**/
-void blk_queue_hardsect_size(request_queue_t *q, unsigned short size)
+void blk_queue_hardsect_size(struct request_queue *q, unsigned short size)
{
q->hardsect_size = size;
}
* @t: the stacking driver (top)
* @b: the underlying device (bottom)
**/
-void blk_queue_stack_limits(request_queue_t *t, request_queue_t *b)
+void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b)
{
/* zero is "infinity" */
t->max_sectors = min_not_zero(t->max_sectors,b->max_sectors);
* @q: the request queue for the device
* @mask: the memory boundary mask
**/
-void blk_queue_segment_boundary(request_queue_t *q, unsigned long mask)
+void blk_queue_segment_boundary(struct request_queue *q, unsigned long mask)
{
if (mask < PAGE_CACHE_SIZE - 1) {
mask = PAGE_CACHE_SIZE - 1;
* this is used when buiding direct io requests for the queue.
*
**/
-void blk_queue_dma_alignment(request_queue_t *q, int mask)
+void blk_queue_dma_alignment(struct request_queue *q, int mask)
{
q->dma_alignment = mask;
}
*
* no locks need be held.
**/
-struct request *blk_queue_find_tag(request_queue_t *q, int tag)
+struct request *blk_queue_find_tag(struct request_queue *q, int tag)
{
return blk_map_queue_find_tag(q->queue_tags, tag);
}
* blk_cleanup_queue() will take care of calling this function, if tagging
* has been used. So there's no need to call this directly.
**/
-static void __blk_queue_free_tags(request_queue_t *q)
+static void __blk_queue_free_tags(struct request_queue *q)
{
struct blk_queue_tag *bqt = q->queue_tags;
* This is used to disabled tagged queuing to a device, yet leave
* queue in function.
**/
-void blk_queue_free_tags(request_queue_t *q)
+void blk_queue_free_tags(struct request_queue *q)
{
clear_bit(QUEUE_FLAG_QUEUED, &q->queue_flags);
}
EXPORT_SYMBOL(blk_queue_free_tags);
static int
-init_tag_map(request_queue_t *q, struct blk_queue_tag *tags, int depth)
+init_tag_map(struct request_queue *q, struct blk_queue_tag *tags, int depth)
{
struct request **tag_index;
unsigned long *tag_map;
* @depth: the maximum queue depth supported
* @tags: the tag to use
**/
-int blk_queue_init_tags(request_queue_t *q, int depth,
+int blk_queue_init_tags(struct request_queue *q, int depth,
struct blk_queue_tag *tags)
{
int rc;
* Notes:
* Must be called with the queue lock held.
**/
-int blk_queue_resize_tags(request_queue_t *q, int new_depth)
+int blk_queue_resize_tags(struct request_queue *q, int new_depth)
{
struct blk_queue_tag *bqt = q->queue_tags;
struct request **tag_index;
* Notes:
* queue lock must be held.
**/
-void blk_queue_end_tag(request_queue_t *q, struct request *rq)
+void blk_queue_end_tag(struct request_queue *q, struct request *rq)
{
struct blk_queue_tag *bqt = q->queue_tags;
int tag = rq->tag;
* Notes:
* queue lock must be held.
**/
-int blk_queue_start_tag(request_queue_t *q, struct request *rq)
+int blk_queue_start_tag(struct request_queue *q, struct request *rq)
{
struct blk_queue_tag *bqt = q->queue_tags;
int tag;
* Notes:
* queue lock must be held.
**/
-void blk_queue_invalidate_tags(request_queue_t *q)
+void blk_queue_invalidate_tags(struct request_queue *q)
{
struct blk_queue_tag *bqt = q->queue_tags;
struct list_head *tmp, *n;
EXPORT_SYMBOL(blk_dump_rq_flags);
-void blk_recount_segments(request_queue_t *q, struct bio *bio)
+void blk_recount_segments(struct request_queue *q, struct bio *bio)
{
struct bio_vec *bv, *bvprv = NULL;
int i, nr_phys_segs, nr_hw_segs, seg_size, hw_seg_size, cluster;
}
EXPORT_SYMBOL(blk_recount_segments);
-static int blk_phys_contig_segment(request_queue_t *q, struct bio *bio,
+static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio,
struct bio *nxt)
{
if (!(q->queue_flags & (1 << QUEUE_FLAG_CLUSTER)))
return 0;
}
-static int blk_hw_contig_segment(request_queue_t *q, struct bio *bio,
+static int blk_hw_contig_segment(struct request_queue *q, struct bio *bio,
struct bio *nxt)
{
if (unlikely(!bio_flagged(bio, BIO_SEG_VALID)))
* map a request to scatterlist, return number of sg entries setup. Caller
* must make sure sg can hold rq->nr_phys_segments entries
*/
-int blk_rq_map_sg(request_queue_t *q, struct request *rq, struct scatterlist *sg)
+int blk_rq_map_sg(struct request_queue *q, struct request *rq,
+ struct scatterlist *sg)
{
struct bio_vec *bvec, *bvprv;
struct bio *bio;
* specific ones if so desired
*/
-static inline int ll_new_mergeable(request_queue_t *q,
+static inline int ll_new_mergeable(struct request_queue *q,
struct request *req,
struct bio *bio)
{
return 1;
}
-static inline int ll_new_hw_segment(request_queue_t *q,
+static inline int ll_new_hw_segment(struct request_queue *q,
struct request *req,
struct bio *bio)
{
return 1;
}
-int ll_back_merge_fn(request_queue_t *q, struct request *req, struct bio *bio)
+int ll_back_merge_fn(struct request_queue *q, struct request *req, struct bio *bio)
{
unsigned short max_sectors;
int len;
}
EXPORT_SYMBOL(ll_back_merge_fn);
-static int ll_front_merge_fn(request_queue_t *q, struct request *req,
+static int ll_front_merge_fn(struct request_queue *q, struct request *req,
struct bio *bio)
{
unsigned short max_sectors;
return ll_new_hw_segment(q, req, bio);
}
-static int ll_merge_requests_fn(request_queue_t *q, struct request *req,
+static int ll_merge_requests_fn(struct request_queue *q, struct request *req,
struct request *next)
{
int total_phys_segments;
* This is called with interrupts off and no requests on the queue and
* with the queue lock held.
*/
-void blk_plug_device(request_queue_t *q)
+void blk_plug_device(struct request_queue *q)
{
WARN_ON(!irqs_disabled());
* remove the queue from the plugged list, if present. called with
* queue lock held and interrupts disabled.
*/
-int blk_remove_plug(request_queue_t *q)
+int blk_remove_plug(struct request_queue *q)
{
WARN_ON(!irqs_disabled());
/*
* remove the plug and let it rip..
*/
-void __generic_unplug_device(request_queue_t *q)
+void __generic_unplug_device(struct request_queue *q)
{
if (unlikely(blk_queue_stopped(q)))
return;
/**
* generic_unplug_device - fire a request queue
- * @q: The &request_queue_t in question
+ * @q: The &struct request_queue in question
*
* Description:
* Linux uses plugging to build bigger requests queues before letting
* gets unplugged, the request_fn defined for the queue is invoked and
* transfers started.
**/
-void generic_unplug_device(request_queue_t *q)
+void generic_unplug_device(struct request_queue *q)
{
spin_lock_irq(q->queue_lock);
__generic_unplug_device(q);
static void blk_backing_dev_unplug(struct backing_dev_info *bdi,
struct page *page)
{
- request_queue_t *q = bdi->unplug_io_data;
+ struct request_queue *q = bdi->unplug_io_data;
/*
* devices don't necessarily have an ->unplug_fn defined
static void blk_unplug_work(struct work_struct *work)
{
- request_queue_t *q = container_of(work, request_queue_t, unplug_work);
+ struct request_queue *q =
+ container_of(work, struct request_queue, unplug_work);
blk_add_trace_pdu_int(q, BLK_TA_UNPLUG_IO, NULL,
q->rq.count[READ] + q->rq.count[WRITE]);
static void blk_unplug_timeout(unsigned long data)
{
- request_queue_t *q = (request_queue_t *)data;
+ struct request_queue *q = (struct request_queue *)data;
blk_add_trace_pdu_int(q, BLK_TA_UNPLUG_TIMER, NULL,
q->rq.count[READ] + q->rq.count[WRITE]);
/**
* blk_start_queue - restart a previously stopped queue
- * @q: The &request_queue_t in question
+ * @q: The &struct request_queue in question
*
* Description:
* blk_start_queue() will clear the stop flag on the queue, and call
* the request_fn for the queue if it was in a stopped state when
* entered. Also see blk_stop_queue(). Queue lock must be held.
**/
-void blk_start_queue(request_queue_t *q)
+void blk_start_queue(struct request_queue *q)
{
WARN_ON(!irqs_disabled());
/**
* blk_stop_queue - stop a queue
- * @q: The &request_queue_t in question
+ * @q: The &struct request_queue in question
*
* Description:
* The Linux block layer assumes that a block driver will consume all
* the driver has signalled it's ready to go again. This happens by calling
* blk_start_queue() to restart queue operations. Queue lock must be held.
**/
-void blk_stop_queue(request_queue_t *q)
+void blk_stop_queue(struct request_queue *q)
{
blk_remove_plug(q);
set_bit(QUEUE_FLAG_STOPPED, &q->queue_flags);
EXPORT_SYMBOL(blk_run_queue);
/**
- * blk_cleanup_queue: - release a &request_queue_t when it is no longer needed
+ * blk_cleanup_queue: - release a &struct request_queue when it is no longer needed
* @kobj: the kobj belonging of the request queue to be released
*
* Description:
**/
static void blk_release_queue(struct kobject *kobj)
{
- request_queue_t *q = container_of(kobj, struct request_queue, kobj);
+ struct request_queue *q =
+ container_of(kobj, struct request_queue, kobj);
struct request_list *rl = &q->rq;
blk_sync_queue(q);
kmem_cache_free(requestq_cachep, q);
}
-void blk_put_queue(request_queue_t *q)
+void blk_put_queue(struct request_queue *q)
{
kobject_put(&q->kobj);
}
EXPORT_SYMBOL(blk_put_queue);
-void blk_cleanup_queue(request_queue_t * q)
+void blk_cleanup_queue(struct request_queue * q)
{
mutex_lock(&q->sysfs_lock);
set_bit(QUEUE_FLAG_DEAD, &q->queue_flags);
EXPORT_SYMBOL(blk_cleanup_queue);
-static int blk_init_free_list(request_queue_t *q)
+static int blk_init_free_list(struct request_queue *q)
{
struct request_list *rl = &q->rq;
return 0;
}
-request_queue_t *blk_alloc_queue(gfp_t gfp_mask)
+struct request_queue *blk_alloc_queue(gfp_t gfp_mask)
{
return blk_alloc_queue_node(gfp_mask, -1);
}
static struct kobj_type queue_ktype;
-request_queue_t *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
+struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
{
- request_queue_t *q;
+ struct request_queue *q;
- q = kmem_cache_alloc_node(requestq_cachep, gfp_mask, node_id);
+ q = kmem_cache_alloc_node(requestq_cachep,
+ gfp_mask | __GFP_ZERO, node_id);
if (!q)
return NULL;
- memset(q, 0, sizeof(*q));
init_timer(&q->unplug_timer);
snprintf(q->kobj.name, KOBJ_NAME_LEN, "%s", "queue");
* when the block device is deactivated (such as at module unload).
**/
-request_queue_t *blk_init_queue(request_fn_proc *rfn, spinlock_t *lock)
+struct request_queue *blk_init_queue(request_fn_proc *rfn, spinlock_t *lock)
{
return blk_init_queue_node(rfn, lock, -1);
}
EXPORT_SYMBOL(blk_init_queue);
-request_queue_t *
+struct request_queue *
blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
{
- request_queue_t *q = blk_alloc_queue_node(GFP_KERNEL, node_id);
+ struct request_queue *q = blk_alloc_queue_node(GFP_KERNEL, node_id);
if (!q)
return NULL;
}
EXPORT_SYMBOL(blk_init_queue_node);
-int blk_get_queue(request_queue_t *q)
+int blk_get_queue(struct request_queue *q)
{
if (likely(!test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
kobject_get(&q->kobj);
EXPORT_SYMBOL(blk_get_queue);
-static inline void blk_free_request(request_queue_t *q, struct request *rq)
+static inline void blk_free_request(struct request_queue *q, struct request *rq)
{
if (rq->cmd_flags & REQ_ELVPRIV)
elv_put_request(q, rq);
}
static struct request *
-blk_alloc_request(request_queue_t *q, int rw, int priv, gfp_t gfp_mask)
+blk_alloc_request(struct request_queue *q, int rw, int priv, gfp_t gfp_mask)
{
struct request *rq = mempool_alloc(q->rq.rq_pool, gfp_mask);
* ioc_batching returns true if the ioc is a valid batching request and
* should be given priority access to a request.
*/
-static inline int ioc_batching(request_queue_t *q, struct io_context *ioc)
+static inline int ioc_batching(struct request_queue *q, struct io_context *ioc)
{
if (!ioc)
return 0;
* is the behaviour we want though - once it gets a wakeup it should be given
* a nice run.
*/
-static void ioc_set_batching(request_queue_t *q, struct io_context *ioc)
+static void ioc_set_batching(struct request_queue *q, struct io_context *ioc)
{
if (!ioc || ioc_batching(q, ioc))
return;
ioc->last_waited = jiffies;
}
-static void __freed_request(request_queue_t *q, int rw)
+static void __freed_request(struct request_queue *q, int rw)
{
struct request_list *rl = &q->rq;
* A request has just been released. Account for it, update the full and
* congestion status, wake up any waiters. Called under q->queue_lock.
*/
-static void freed_request(request_queue_t *q, int rw, int priv)
+static void freed_request(struct request_queue *q, int rw, int priv)
{
struct request_list *rl = &q->rq;
* Returns NULL on failure, with queue_lock held.
* Returns !NULL on success, with queue_lock *not held*.
*/
-static struct request *get_request(request_queue_t *q, int rw_flags,
+static struct request *get_request(struct request_queue *q, int rw_flags,
struct bio *bio, gfp_t gfp_mask)
{
struct request *rq = NULL;
*
* Called with q->queue_lock held, and returns with it unlocked.
*/
-static struct request *get_request_wait(request_queue_t *q, int rw_flags,
+static struct request *get_request_wait(struct request_queue *q, int rw_flags,
struct bio *bio)
{
const int rw = rw_flags & 0x01;
return rq;
}
-struct request *blk_get_request(request_queue_t *q, int rw, gfp_t gfp_mask)
+struct request *blk_get_request(struct request_queue *q, int rw, gfp_t gfp_mask)
{
struct request *rq;
*
* The queue lock must be held with interrupts disabled.
*/
-void blk_start_queueing(request_queue_t *q)
+void blk_start_queueing(struct request_queue *q)
{
if (!blk_queue_plugged(q))
q->request_fn(q);
* more, when that condition happens we need to put the request back
* on the queue. Must be called with queue lock held.
*/
-void blk_requeue_request(request_queue_t *q, struct request *rq)
+void blk_requeue_request(struct request_queue *q, struct request *rq)
{
blk_add_trace_rq(q, rq, BLK_TA_REQUEUE);
* of the queue for things like a QUEUE_FULL message from a device, or a
* host that is unable to accept a particular command.
*/
-void blk_insert_request(request_queue_t *q, struct request *rq,
+void blk_insert_request(struct request_queue *q, struct request *rq,
int at_head, void *data)
{
int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
return ret;
}
-static int __blk_rq_map_user(request_queue_t *q, struct request *rq,
+static int __blk_rq_map_user(struct request_queue *q, struct request *rq,
void __user *ubuf, unsigned int len)
{
unsigned long uaddr;
* original bio must be passed back in to blk_rq_unmap_user() for proper
* unmapping.
*/
-int blk_rq_map_user(request_queue_t *q, struct request *rq, void __user *ubuf,
- unsigned long len)
+int blk_rq_map_user(struct request_queue *q, struct request *rq,
+ void __user *ubuf, unsigned long len)
{
unsigned long bytes_read = 0;
struct bio *bio = NULL;
* original bio must be passed back in to blk_rq_unmap_user() for proper
* unmapping.
*/
-int blk_rq_map_user_iov(request_queue_t *q, struct request *rq,
+int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
struct sg_iovec *iov, int iov_count, unsigned int len)
{
struct bio *bio;
* @len: length of user data
* @gfp_mask: memory allocation flags
*/
-int blk_rq_map_kern(request_queue_t *q, struct request *rq, void *kbuf,
+int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
unsigned int len, gfp_t gfp_mask)
{
struct bio *bio;
* Insert a fully prepared request at the back of the io scheduler queue
* for execution. Don't wait for completion.
*/
-void blk_execute_rq_nowait(request_queue_t *q, struct gendisk *bd_disk,
+void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
struct request *rq, int at_head,
rq_end_io_fn *done)
{
* Insert a fully prepared request at the back of the io scheduler queue
* for execution and wait for completion.
*/
-int blk_execute_rq(request_queue_t *q, struct gendisk *bd_disk,
+int blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
struct request *rq, int at_head)
{
DECLARE_COMPLETION_ONSTACK(wait);
*/
int blkdev_issue_flush(struct block_device *bdev, sector_t *error_sector)
{
- request_queue_t *q;
+ struct request_queue *q;
if (bdev->bd_disk == NULL)
return -ENXIO;
* queue lock is held and interrupts disabled, as we muck with the
* request queue list.
*/
-static inline void add_request(request_queue_t * q, struct request * req)
+static inline void add_request(struct request_queue * q, struct request * req)
{
drive_stat_acct(req, req->nr_sectors, 1);
/*
* queue lock must be held
*/
-void __blk_put_request(request_queue_t *q, struct request *req)
+void __blk_put_request(struct request_queue *q, struct request *req)
{
if (unlikely(!q))
return;
void blk_put_request(struct request *req)
{
unsigned long flags;
- request_queue_t *q = req->q;
+ struct request_queue *q = req->q;
/*
* Gee, IDE calls in w/ NULL q. Fix IDE and remove the
/*
* Has to be called with the request spinlock acquired
*/
-static int attempt_merge(request_queue_t *q, struct request *req,
+static int attempt_merge(struct request_queue *q, struct request *req,
struct request *next)
{
if (!rq_mergeable(req) || !rq_mergeable(next))
return 1;
}
-static inline int attempt_back_merge(request_queue_t *q, struct request *rq)
+static inline int attempt_back_merge(struct request_queue *q,
+ struct request *rq)
{
struct request *next = elv_latter_request(q, rq);
return 0;
}
-static inline int attempt_front_merge(request_queue_t *q, struct request *rq)
+static inline int attempt_front_merge(struct request_queue *q,
+ struct request *rq)
{
struct request *prev = elv_former_request(q, rq);
req->start_time = jiffies;
}
-static int __make_request(request_queue_t *q, struct bio *bio)
+static int __make_request(struct request_queue *q, struct bio *bio)
{
struct request *req;
int el_ret, nr_sectors, barrier, err;
bio->bi_sector += p->start_sect;
bio->bi_bdev = bdev->bd_contains;
+
+ blk_add_trace_remap(bdev_get_queue(bio->bi_bdev), bio,
+ bdev->bd_dev, bio->bi_sector,
+ bio->bi_sector - p->start_sect);
}
}
*/
static inline void __generic_make_request(struct bio *bio)
{
- request_queue_t *q;
+ struct request_queue *q;
sector_t maxsector;
sector_t old_sector;
int ret, nr_sectors = bio_sectors(bio);
struct bio *bio, *prevbio = NULL;
int nr_phys_segs, nr_hw_segs;
unsigned int phys_size, hw_size;
- request_queue_t *q = rq->q;
+ struct request_queue *q = rq->q;
if (!rq->bio)
return;
EXPORT_SYMBOL(end_request);
-void blk_rq_bio_prep(request_queue_t *q, struct request *rq, struct bio *bio)
+void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
+ struct bio *bio)
{
/* first two bits are identical in rq->cmd_flags and bio->bi_rw */
rq->cmd_flags |= (bio->bi_rw & 3);
panic("Failed to create kblockd\n");
request_cachep = kmem_cache_create("blkdev_requests",
- sizeof(struct request), 0, SLAB_PANIC, NULL, NULL);
+ sizeof(struct request), 0, SLAB_PANIC, NULL);
requestq_cachep = kmem_cache_create("blkdev_queue",
- sizeof(request_queue_t), 0, SLAB_PANIC, NULL, NULL);
+ sizeof(struct request_queue), 0, SLAB_PANIC, NULL);
iocontext_cachep = kmem_cache_create("blkdev_ioc",
- sizeof(struct io_context), 0, SLAB_PANIC, NULL, NULL);
+ sizeof(struct io_context), 0, SLAB_PANIC, NULL);
for_each_possible_cpu(i)
INIT_LIST_HEAD(&per_cpu(blk_cpu_done, i));
queue_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
{
struct queue_sysfs_entry *entry = to_queue(attr);
- request_queue_t *q = container_of(kobj, struct request_queue, kobj);
+ struct request_queue *q =
+ container_of(kobj, struct request_queue, kobj);
ssize_t res;
if (!entry->show)
const char *page, size_t length)
{
struct queue_sysfs_entry *entry = to_queue(attr);
- request_queue_t *q = container_of(kobj, struct request_queue, kobj);
+ struct request_queue *q = container_of(kobj, struct request_queue, kobj);
ssize_t res;
{
int ret;
- request_queue_t *q = disk->queue;
+ struct request_queue *q = disk->queue;
if (!q || !q->request_fn)
return -ENXIO;
void blk_unregister_queue(struct gendisk *disk)
{
- request_queue_t *q = disk->queue;
+ struct request_queue *q = disk->queue;
if (q && q->request_fn) {
elv_unregister_queue(q);
git.samba.org / sfrench / cifs-2.6.git / blobdiff