6 files changed, 28 insertions, 19 deletions

diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index eb42bf9847cb..ec7c498b69fc 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/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>
diff --git a/block/Kconfig b/block/Kconfig
index ca2ef4e08497..2484e0e9d89c 100644
--- a/block/Kconfig
+++ b/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
diff --git a/block/blktrace.c b/block/blktrace.c
index 20c3e22587b5..20fa034ea4a2 100644
--- a/block/blktrace.c
+++ b/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();
 }
diff --git a/fs/pipe.c b/fs/pipe.c
index d007830d9c87..6b3d91a691bf 100644
--- a/fs/pipe.c
+++ b/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:
diff --git a/fs/splice.c b/fs/splice.c
index 0a0973218084..c010a72ca2d2 100644
--- a/fs/splice.c
+++ b/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.
  *
  */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index a1c96d9ee720..b126c6f68e27 100644
--- a/include/linux/blkdev.h
+++ b/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 */