Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...

[linux-2.6-omap-h63xx.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index e9bb73ff1d64cf8c64755f9fa72b271b1337e0e1..7035cec583b6cd2854d14415139040032089b0ac 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -26,7 +26,6 @@ struct scsi_ioctl_command;
 
 struct request_queue;
 struct elevator_queue;
-typedef struct elevator_queue elevator_t;
 struct request_pm_state;
 struct blk_trace;
 struct request;
@@ -313,7 +312,7 @@ struct request_queue
         */
        struct list_head        queue_head;
        struct request          *last_merge;
-       elevator_t              *elevator;
+       struct elevator_queue   *elevator;
 
        /*
         * the queue request freelist, one for reads and one for writes
@@ -523,22 +522,32 @@ enum {
         * TAG_FLUSH    : ordering by tag w/ pre and post flushes
         * TAG_FUA      : ordering by tag w/ pre flush and FUA write
         */
-       QUEUE_ORDERED_NONE      = 0x00,
-       QUEUE_ORDERED_DRAIN     = 0x01,
-       QUEUE_ORDERED_TAG       = 0x02,
-
-       QUEUE_ORDERED_PREFLUSH  = 0x10,
-       QUEUE_ORDERED_POSTFLUSH = 0x20,
-       QUEUE_ORDERED_FUA       = 0x40,
-
-       QUEUE_ORDERED_DRAIN_FLUSH = QUEUE_ORDERED_DRAIN |
-                       QUEUE_ORDERED_PREFLUSH | QUEUE_ORDERED_POSTFLUSH,
-       QUEUE_ORDERED_DRAIN_FUA = QUEUE_ORDERED_DRAIN |
-                       QUEUE_ORDERED_PREFLUSH | QUEUE_ORDERED_FUA,
-       QUEUE_ORDERED_TAG_FLUSH = QUEUE_ORDERED_TAG |
-                       QUEUE_ORDERED_PREFLUSH | QUEUE_ORDERED_POSTFLUSH,
-       QUEUE_ORDERED_TAG_FUA   = QUEUE_ORDERED_TAG |
-                       QUEUE_ORDERED_PREFLUSH | QUEUE_ORDERED_FUA,
+       QUEUE_ORDERED_BY_DRAIN          = 0x01,
+       QUEUE_ORDERED_BY_TAG            = 0x02,
+       QUEUE_ORDERED_DO_PREFLUSH       = 0x10,
+       QUEUE_ORDERED_DO_BAR            = 0x20,
+       QUEUE_ORDERED_DO_POSTFLUSH      = 0x40,
+       QUEUE_ORDERED_DO_FUA            = 0x80,
+
+       QUEUE_ORDERED_NONE              = 0x00,
+
+       QUEUE_ORDERED_DRAIN             = QUEUE_ORDERED_BY_DRAIN |
+                                         QUEUE_ORDERED_DO_BAR,
+       QUEUE_ORDERED_DRAIN_FLUSH       = QUEUE_ORDERED_DRAIN |
+                                         QUEUE_ORDERED_DO_PREFLUSH |
+                                         QUEUE_ORDERED_DO_POSTFLUSH,
+       QUEUE_ORDERED_DRAIN_FUA         = QUEUE_ORDERED_DRAIN |
+                                         QUEUE_ORDERED_DO_PREFLUSH |
+                                         QUEUE_ORDERED_DO_FUA,
+
+       QUEUE_ORDERED_TAG               = QUEUE_ORDERED_BY_TAG |
+                                         QUEUE_ORDERED_DO_BAR,
+       QUEUE_ORDERED_TAG_FLUSH         = QUEUE_ORDERED_TAG |
+                                         QUEUE_ORDERED_DO_PREFLUSH |
+                                         QUEUE_ORDERED_DO_POSTFLUSH,
+       QUEUE_ORDERED_TAG_FUA           = QUEUE_ORDERED_TAG |
+                                         QUEUE_ORDERED_DO_PREFLUSH |
+                                         QUEUE_ORDERED_DO_FUA,
 
        /*
         * Ordered operation sequence
@@ -586,7 +595,6 @@ enum {
 #define blk_fua_rq(rq)         ((rq)->cmd_flags & REQ_FUA)
 #define blk_discard_rq(rq)     ((rq)->cmd_flags & REQ_DISCARD)
 #define blk_bidi_rq(rq)                ((rq)->next_rq != NULL)
-#define blk_empty_barrier(rq)  (blk_barrier_rq(rq) && blk_fs_request(rq) && !(rq)->hard_nr_sectors)
 /* rq->queuelist of dequeued request must be list_empty() */
 #define blk_queued_rq(rq)      (!list_empty(&(rq)->queuelist))
 
@@ -856,10 +864,10 @@ extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
 extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
 extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
 extern int blk_queue_ordered(struct request_queue *, unsigned, prepare_flush_fn *);
-extern int blk_do_ordered(struct request_queue *, struct request **);
+extern bool blk_do_ordered(struct request_queue *, struct request **);
 extern unsigned blk_ordered_cur_seq(struct request_queue *);
 extern unsigned blk_ordered_req_seq(struct request *);
-extern void blk_ordered_complete_seq(struct request_queue *, unsigned, int);
+extern bool blk_ordered_complete_seq(struct request_queue *, unsigned, int);
 
 extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
 extern void blk_dump_rq_flags(struct request *, char *);