Merge branch 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block

* 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block:
  block: implement drain buffers
  __bio_clone: don't calculate hw/phys segment counts
  block: allow queue dma_alignment of zero
  blktrace: Add blktrace ioctls to SCSI generic devices

2 files changed, 15 insertions, 8 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b71c3900810d..71e7a847dffc 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -356,6 +356,8 @@ struct request_queue
         unsigned int            max_segment_size;
 
         unsigned long           seg_boundary_mask;
+        void                    *dma_drain_buffer;
+        unsigned int            dma_drain_size;
         unsigned int            dma_alignment;
 
         struct blk_queue_tag    *queue_tags;
@@ -692,6 +694,8 @@ extern void blk_queue_max_hw_segments(struct request_queue *, unsigned short);
 extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
 extern void blk_queue_hardsect_size(struct request_queue *, unsigned short);
 extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b);
+extern int blk_queue_dma_drain(struct request_queue *q, void *buf,
+                               unsigned int size);
 extern void blk_queue_segment_boundary(struct request_queue *, unsigned long);
 extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn);
 extern void blk_queue_merge_bvec(struct request_queue *, merge_bvec_fn *);
@@ -768,12 +772,7 @@ static inline int bdev_hardsect_size(struct block_device *bdev)
 
 static inline int queue_dma_alignment(struct request_queue *q)
 {
-        int retval = 511;
-
-        if (q && q->dma_alignment)
-                retval = q->dma_alignment;
-
-        return retval;
+        return q ? q->dma_alignment : 511;
 }
 
 /* assumes size > 256 */
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 7e11d23ac36a..06dadba349ac 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -148,7 +148,7 @@ extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
 extern void blk_trace_shutdown(struct request_queue *);
 extern void __blk_add_trace(struct blk_trace *, sector_t, int, int, u32, int, int, void *);
 extern int do_blk_trace_setup(struct request_queue *q,
-        struct block_device *bdev, struct blk_user_trace_setup *buts);
+        char *name, dev_t dev, struct blk_user_trace_setup *buts);
 
 
 /**
@@ -282,6 +282,11 @@ static inline void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
         __blk_add_trace(bt, from, bio->bi_size, bio->bi_rw, BLK_TA_REMAP, !bio_flagged(bio, BIO_UPTODATE), sizeof(r), &r);
 }
 
+extern int blk_trace_setup(request_queue_t *q, char *name, dev_t dev,
+                           char __user *arg);
+extern int blk_trace_startstop(request_queue_t *q, int start);
+extern int blk_trace_remove(request_queue_t *q);
+
 #else /* !CONFIG_BLK_DEV_IO_TRACE */
 #define blk_trace_ioctl(bdev, cmd, arg)         (-ENOTTY)
 #define blk_trace_shutdown(q)                   do { } while (0)
@@ -290,7 +295,10 @@ static inline void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
 #define blk_add_trace_generic(q, rq, rw, what)  do { } while (0)
 #define blk_add_trace_pdu_int(q, what, bio, pdu)        do { } while (0)
 #define blk_add_trace_remap(q, bio, dev, f, t)  do {} while (0)
-#define do_blk_trace_setup(q, bdev, buts)       (-ENOTTY)
+#define do_blk_trace_setup(q, name, dev, buts)  (-ENOTTY)
+#define blk_trace_setup(q, name, dev, arg)      (-ENOTTY)
+#define blk_trace_startstop(q, start)           (-ENOTTY)
+#define blk_trace_remove(q)                     (-ENOTTY)
 #endif /* CONFIG_BLK_DEV_IO_TRACE */
 #endif /* __KERNEL__ */
 #endif