5 files changed, 21 insertions, 37 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index fb0985377421..02a585faa62c 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -118,9 +118,9 @@ struct request_list {
  * try to put the fields that are referenced together in the same cacheline
  */
 struct request {
-        struct list_head queuelist; /* looking for ->queue? you must _not_
-                                     * access it directly, use
-                                     * blkdev_dequeue_request! */
+        struct list_head queuelist;
+        struct list_head donelist;
+
         unsigned long flags;            /* see REQ_ bits below */
 
         /* Maintain bio traversal state for part by part I/O submission.
@@ -141,6 +141,7 @@ struct request {
         struct bio *biotail;
 
         void *elevator_private;
+        void *completion_data;
 
         unsigned short ioprio;
 
@@ -291,6 +292,7 @@ typedef int (merge_bvec_fn) (request_queue_t *, struct bio *, struct bio_vec *);
 typedef void (activity_fn) (void *data, int rw);
 typedef int (issue_flush_fn) (request_queue_t *, struct gendisk *, sector_t *);
 typedef void (prepare_flush_fn) (request_queue_t *, struct request *);
+typedef void (softirq_done_fn)(struct request *);
 
 enum blk_queue_state {
         Queue_down,
@@ -332,6 +334,7 @@ struct request_queue
         activity_fn             *activity_fn;
         issue_flush_fn          *issue_flush_fn;
         prepare_flush_fn        *prepare_flush_fn;
+        softirq_done_fn         *softirq_done_fn;
 
         /*
          * Dispatch queue sorting
@@ -592,7 +595,6 @@ 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, 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 *);
 extern void blk_requeue_request(request_queue_t *, struct request *);
@@ -646,6 +648,17 @@ 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 *, int);
 extern void end_request(struct request *req, int uptodate);
+extern void blk_complete_request(struct request *);
+
+static inline int rq_all_done(struct request *rq, unsigned int nr_bytes)
+{
+        if (blk_fs_request(rq))
+                return (nr_bytes >= (rq->hard_nr_sectors << 9));
+        else if (blk_pc_request(rq))
+                return nr_bytes >= rq->data_len;
+
+        return 0;
+}
 
 /*
  * end_that_request_first/chunk() takes an uptodate argument. we account
@@ -694,6 +707,7 @@ extern void blk_queue_segment_boundary(request_queue_t *, unsigned long);
 extern void blk_queue_prep_rq(request_queue_t *, prep_rq_fn *pfn);
 extern void blk_queue_merge_bvec(request_queue_t *, merge_bvec_fn *);
 extern void blk_queue_dma_alignment(request_queue_t *, int);
+extern void blk_queue_softirq_done(request_queue_t *, softirq_done_fn *);
 extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
 extern int blk_queue_ordered(request_queue_t *, unsigned, prepare_flush_fn *);
 extern void blk_queue_issue_flush_fn(request_queue_t *, issue_flush_fn *);
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index fb80fa44c4dd..4a6f50e31c73 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -114,8 +114,6 @@ extern ssize_t elv_iosched_store(request_queue_t *, const char *, size_t);
 extern int elevator_init(request_queue_t *, char *);
 extern void elevator_exit(elevator_t *);
 extern int elv_rq_merge_ok(struct request *, struct bio *);
-extern int elv_try_merge(struct request *, struct bio *);
-extern int elv_try_last_merge(request_queue_t *, struct bio *);
 
 /*
  * Return values from elevator merger
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 4dd6694963c0..ef8d0cbb832f 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1001,6 +1001,7 @@ extern int noautodma;
 
 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
 extern int __ide_end_request (ide_drive_t *drive, struct request *rq, int uptodate, int nrsecs);
+extern void ide_softirq_done(struct request *rq);
 
 /*
  * This is used on exit from the driver to designate the next irq handler
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index e50a95fbeb11..2c08fdc2bdf7 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -112,7 +112,7 @@ enum
         TIMER_SOFTIRQ,
         NET_TX_SOFTIRQ,
         NET_RX_SOFTIRQ,
-        SCSI_SOFTIRQ,
+        BLOCK_SOFTIRQ,
         TASKLET_SOFTIRQ
 };
 
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 51747cd88d1a..a1d26cb28925 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -125,36 +125,7 @@ static inline void rcu_bh_qsctr_inc(int cpu)
         rdp->passed_quiesc = 1;
 }
 
-static inline int __rcu_pending(struct rcu_ctrlblk *rcp,
-                                                struct rcu_data *rdp)
-{
-        /* This cpu has pending rcu entries and the grace period
-         * for them has completed.
-         */
-        if (rdp->curlist && !rcu_batch_before(rcp->completed, rdp->batch))
-                return 1;
-
-        /* This cpu has no pending entries, but there are new entries */
-        if (!rdp->curlist && rdp->nxtlist)
-                return 1;
-
-        /* This cpu has finished callbacks to invoke */
-        if (rdp->donelist)
-                return 1;
-
-        /* The rcu core waits for a quiescent state from the cpu */
-        if (rdp->quiescbatch != rcp->cur || rdp->qs_pending)
-                return 1;
-
-        /* nothing to do */
-        return 0;
-}
-
-static inline int rcu_pending(int cpu)
-{
-        return __rcu_pending(&rcu_ctrlblk, &per_cpu(rcu_data, cpu)) ||
-                __rcu_pending(&rcu_bh_ctrlblk, &per_cpu(rcu_bh_data, cpu));
-}
+extern int rcu_pending(int cpu);
 
 /**
  * rcu_read_lock - mark the beginning of an RCU read-side critical section.