Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

[pandora-kernel.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1c76506..2ad95fa 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -196,7 +196,6 @@ typedef void (request_fn_proc) (struct request_queue *q);
 typedef int (make_request_fn) (struct request_queue *q, struct bio *bio);
 typedef int (prep_rq_fn) (struct request_queue *, struct request *);
 typedef void (unprep_rq_fn) (struct request_queue *, struct request *);
-typedef void (unplugged_fn) (struct request_queue *);
 
 struct bio_vec;
 struct bvec_merge_data {
@@ -284,7 +283,6 @@ struct request_queue
        rq_timed_out_fn         *rq_timed_out_fn;
        dma_drain_needed_fn     *dma_drain_needed;
        lld_busy_fn             *lld_busy_fn;
-       unplugged_fn            *unplugged_fn;
 
        /*
         * Dispatch queue sorting
@@ -390,20 +388,19 @@ struct request_queue
 #define        QUEUE_FLAG_SYNCFULL     3       /* read queue has been filled */
 #define QUEUE_FLAG_ASYNCFULL   4       /* write queue has been filled */
 #define QUEUE_FLAG_DEAD                5       /* queue being torn down */
-#define QUEUE_FLAG_REENTER     6       /* Re-entrancy avoidance */
-#define QUEUE_FLAG_ELVSWITCH   7       /* don't use elevator, just do FIFO */
-#define QUEUE_FLAG_BIDI                8       /* queue supports bidi requests */
-#define QUEUE_FLAG_NOMERGES     9      /* disable merge attempts */
-#define QUEUE_FLAG_SAME_COMP   10      /* force complete on same CPU */
-#define QUEUE_FLAG_FAIL_IO     11      /* fake timeout */
-#define QUEUE_FLAG_STACKABLE   12      /* supports request stacking */
-#define QUEUE_FLAG_NONROT      13      /* non-rotational device (SSD) */
+#define QUEUE_FLAG_ELVSWITCH   6       /* don't use elevator, just do FIFO */
+#define QUEUE_FLAG_BIDI                7       /* queue supports bidi requests */
+#define QUEUE_FLAG_NOMERGES     8      /* disable merge attempts */
+#define QUEUE_FLAG_SAME_COMP   9       /* force complete on same CPU */
+#define QUEUE_FLAG_FAIL_IO     10      /* fake timeout */
+#define QUEUE_FLAG_STACKABLE   11      /* supports request stacking */
+#define QUEUE_FLAG_NONROT      12      /* non-rotational device (SSD) */
 #define QUEUE_FLAG_VIRT        QUEUE_FLAG_NONROT /* paravirt device */
-#define QUEUE_FLAG_IO_STAT     15      /* do IO stats */
-#define QUEUE_FLAG_DISCARD     16      /* supports DISCARD */
-#define QUEUE_FLAG_NOXMERGES   17      /* No extended merges */
-#define QUEUE_FLAG_ADD_RANDOM  18      /* Contributes to random pool */
-#define QUEUE_FLAG_SECDISCARD  19      /* supports SECDISCARD */
+#define QUEUE_FLAG_IO_STAT     13      /* do IO stats */
+#define QUEUE_FLAG_DISCARD     14      /* supports DISCARD */
+#define QUEUE_FLAG_NOXMERGES   15      /* No extended merges */
+#define QUEUE_FLAG_ADD_RANDOM  16      /* Contributes to random pool */
+#define QUEUE_FLAG_SECDISCARD  17      /* supports SECDISCARD */
 
 #define QUEUE_FLAG_DEFAULT     ((1 << QUEUE_FLAG_IO_STAT) |            \
                                 (1 << QUEUE_FLAG_STACKABLE)    |       \
@@ -699,8 +696,9 @@ extern void blk_start_queue(struct request_queue *q);
 extern void blk_stop_queue(struct request_queue *q);
 extern void blk_sync_queue(struct request_queue *q);
 extern void __blk_stop_queue(struct request_queue *q);
-extern void __blk_run_queue(struct request_queue *q, bool force_kblockd);
+extern void __blk_run_queue(struct request_queue *q);
 extern void blk_run_queue(struct request_queue *);
+extern void blk_run_queue_async(struct request_queue *q);
 extern int blk_rq_map_user(struct request_queue *, struct request *,
                           struct rq_map_data *, void __user *, unsigned long,
                           gfp_t);
@@ -843,7 +841,6 @@ extern void blk_queue_dma_alignment(struct request_queue *, int);
 extern void blk_queue_update_dma_alignment(struct request_queue *, int);
 extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
 extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
-extern void blk_queue_unplugged(struct request_queue *, unplugged_fn *);
 extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
 extern void blk_queue_flush(struct request_queue *q, unsigned int flush);
 extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
@@ -860,8 +857,13 @@ extern void blk_put_queue(struct request_queue *);
 struct blk_plug {
        unsigned long magic;
        struct list_head list;
+       struct list_head cb_list;
        unsigned int should_sort;
 };
+struct blk_plug_cb {
+       struct list_head list;
+       void (*callback)(struct blk_plug_cb *);
+};
 
 extern void blk_start_plug(struct blk_plug *);
 extern void blk_finish_plug(struct blk_plug *);
@@ -871,6 +873,14 @@ static inline void blk_flush_plug(struct task_struct *tsk)
 {
        struct blk_plug *plug = tsk->plug;
 
+       if (plug)
+               blk_flush_plug_list(plug, false);
+}
+
+static inline void blk_schedule_flush_plug(struct task_struct *tsk)
+{
+       struct blk_plug *plug = tsk->plug;
+
        if (plug)
                blk_flush_plug_list(plug, true);
 }
@@ -879,7 +889,7 @@ static inline bool blk_needs_flush_plug(struct task_struct *tsk)
 {
        struct blk_plug *plug = tsk->plug;
 
-       return plug && !list_empty(&plug->list);
+       return plug && (!list_empty(&plug->list) || !list_empty(&plug->cb_list));
 }
 
 /*
@@ -1317,6 +1327,11 @@ static inline void blk_flush_plug(struct task_struct *task)
 {
 }
 
+static inline void blk_schedule_flush_plug(struct task_struct *task)
+{
+}
+
+
 static inline bool blk_needs_flush_plug(struct task_struct *tsk)
 {
        return false;