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

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  docbook: add pipes, other fixes
  blktrace: use cpu_clock() instead of sched_clock()
  bsg: Fix build for CONFIG_BLOCK=n
  [patch] QUEUE_FLAG_READFULL QUEUE_FLAG_WRITEFULL comment fix

Documentation/DocBook/kernel-api.tmpl

@@ -704,14 +704,23 @@ X!Idrivers/video/console/fonts.c
 
   <chapter id="splice">
       <title>splice API</title>
-  <para>)
+  <para>
 	splice is a method for moving blocks of data around inside the
-	kernel, without continually transferring it between the kernel
+	kernel, without continually transferring them between the kernel
 	and user space.
   </para>
 !Iinclude/linux/splice.h
 !Ffs/splice.c
   </chapter>
 
+  <chapter id="pipes">
+      <title>pipes API</title>
+  <para>
+	Pipe interfaces are all for in-kernel (builtin image) use.
+	They are not exported for use by modules.
+  </para>
+!Iinclude/linux/pipe_fs_i.h
+!Ffs/pipe.c
+  </chapter>
 
 </book>

block/Kconfig

@@ -49,8 +49,6 @@ config LSF
 
 	  If unsure, say Y.
 
-endif # BLOCK
-
 config BLK_DEV_BSG
 	bool "Block layer SG support v4 (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
@@ -64,4 +62,6 @@ config BLK_DEV_BSG
 	protocols (e.g. Task Management Functions and SMP in Serial
 	Attached SCSI).
 
+endif # BLOCK
+
 source block/Kconfig.iosched

block/blktrace.c

@@ -41,7 +41,7 @@ static void trace_note(struct blk_trace *bt, pid_t pid, int action,
 		const int cpu = smp_processor_id();
 
 		t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;
-		t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
+		t->time = cpu_clock(cpu) - per_cpu(blk_trace_cpu_offset, cpu);
 		t->device = bt->dev;
 		t->action = action;
 		t->pid = pid;
@@ -159,7 +159,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
 
 		t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;
 		t->sequence = ++(*sequence);
-		t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
+		t->time = cpu_clock(cpu) - per_cpu(blk_trace_cpu_offset, cpu);
 		t->sector = sector;
 		t->bytes = bytes;
 		t->action = what;
@@ -488,17 +488,17 @@ void blk_trace_shutdown(struct request_queue *q)
 }
 
 /*
- * Average offset over two calls to sched_clock() with a gettimeofday()
+ * Average offset over two calls to cpu_clock() with a gettimeofday()
  * in the middle
  */
-static void blk_check_time(unsigned long long *t)
+static void blk_check_time(unsigned long long *t, int this_cpu)
 {
 	unsigned long long a, b;
 	struct timeval tv;
 
-	a = sched_clock();
+	a = cpu_clock(this_cpu);
 	do_gettimeofday(&tv);
-	b = sched_clock();
+	b = cpu_clock(this_cpu);
 
 	*t = tv.tv_sec * 1000000000 + tv.tv_usec * 1000;
 	*t -= (a + b) / 2;
@@ -510,16 +510,16 @@ static void blk_check_time(unsigned long long *t)
 static void blk_trace_check_cpu_time(void *data)
 {
 	unsigned long long *t;
-	int cpu = get_cpu();
+	int this_cpu = get_cpu();
 
-	t = &per_cpu(blk_trace_cpu_offset, cpu);
+	t = &per_cpu(blk_trace_cpu_offset, this_cpu);
 
 	/*
 	 * Just call it twice, hopefully the second call will be cache hot
 	 * and a little more precise
 	 */
-	blk_check_time(t);
-	blk_check_time(t);
+	blk_check_time(t, this_cpu);
+	blk_check_time(t, this_cpu);
 
 	put_cpu();
 }

fs/pipe.c

@@ -255,7 +255,7 @@ void generic_pipe_buf_get(struct pipe_inode_info *pipe, struct pipe_buffer *buf)
 
 /**
  * generic_pipe_buf_confirm - verify contents of the pipe buffer
- * @pipe:	the pipe that the buffer belongs to
+ * @info:	the pipe that the buffer belongs to
  * @buf:	the buffer to confirm
  *
  * Description:

fs/splice.c

@@ -164,7 +164,7 @@ static const struct pipe_buf_operations user_page_pipe_buf_ops = {
  * @spd:	data to fill
  *
  * Description:
- *    @spd contains a map of pages and len/offset tupples, a long with
+ *    @spd contains a map of pages and len/offset tuples, along with
  *    the struct pipe_buf_operations associated with these pages. This
  *    function will link that data to the pipe.
  *
@@ -1000,7 +1000,7 @@ static long do_splice_to(struct file *in, loff_t *ppos,
  * Description:
  *    This is a special case helper to splice directly between two
  *    points, without requiring an explicit pipe. Internally an allocated
- *    pipe is cached in the process, and reused during the life time of
+ *    pipe is cached in the process, and reused during the lifetime of
  *    that process.
  *
  */

include/linux/blkdev.h

@@ -483,8 +483,8 @@ struct request_queue
 #define QUEUE_FLAG_CLUSTER	0	/* cluster several segments into 1 */
 #define QUEUE_FLAG_QUEUED	1	/* uses generic tag queueing */
 #define QUEUE_FLAG_STOPPED	2	/* queue is stopped */
-#define	QUEUE_FLAG_READFULL	3	/* write queue has been filled */
-#define QUEUE_FLAG_WRITEFULL	4	/* read queue has been filled */
+#define	QUEUE_FLAG_READFULL	3	/* read queue has been filled */
+#define QUEUE_FLAG_WRITEFULL	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_PLUGGED	7	/* queue is plugged */