Merge branch 'block-2.6.24' of git://git.kernel.dk/data/git/linux-2.6…

…-block

* 'block-2.6.24' of git://git.kernel.dk/data/git/linux-2.6-block: (37 commits)
  [BLOCK] Fix failing compile with BLK_DEV_IO_TRACE=n
  compat_ioctl: move floppy handlers to block/compat_ioctl.c
  compat_ioctl: move cdrom handlers to block/compat_ioctl.c
  compat_ioctl: move BLKPG handling to block/compat_ioctl.c
  compat_ioctl: move hdio calls to block/compat_ioctl.c
  compat_ioctl: handle blk_trace ioctls
  compat_ioctl: add compat_blkdev_driver_ioctl()
  compat_ioctl: move common block ioctls to compat_blkdev_ioctl
  Sysace: Don't enable IRQ until after interrupt handler is registered
  Sysace: sparse fixes
  Sysace: Minor coding convention fixup
  drivers/block/umem: use DRIVER_NAME where appropriate
  drivers/block/umem: trim trailing whitespace
  drivers/block/umem: minor cleanups
  drivers/block/umem: use dev_printk()
  drivers/block/umem: move private include away from include/linux
  Sysace: Labels in C code should not be indented.
  Sysace: Add of_platform_bus binding
  Sysace: Move IRQ handler registration to occur after FSM is initialized
  Sysace: minor rework and cleanup changes
  ...

Documentation/block/biodoc.txt

@@ -477,9 +477,9 @@ With this multipage bio design:
   the same bi_io_vec array, but with the index and size accordingly modified)
 - A linked list of bios is used as before for unrelated merges (*) - this
   avoids reallocs and makes independent completions easier to handle.
-- Code that traverses the req list needs to make a distinction between
-  segments of a request (bio_for_each_segment) and the distinct completion
-  units/bios (rq_for_each_bio).
+- Code that traverses the req list can find all the segments of a bio
+  by using rq_for_each_segment.  This handles the fact that a request
+  has multiple bios, each of which can have multiple segments.
 - Drivers which can't process a large bio in one shot can use the bi_idx
   field to keep track of the next bio_vec entry to process.
   (e.g a 1MB bio_vec needs to be handled in max 128kB chunks for IDE)
@@ -664,14 +664,14 @@ in lvm or md.
 
 3.2.1 Traversing segments and completion units in a request
 
-The macros bio_for_each_segment() and rq_for_each_bio() should be used for
-traversing the bios in the request list (drivers should avoid directly
-trying to do it themselves). Using these helpers should also make it easier
-to cope with block changes in the future.
+The macro rq_for_each_segment() should be used for traversing the bios
+in the request list (drivers should avoid directly trying to do it
+themselves). Using these helpers should also make it easier to cope
+with block changes in the future.
 
-	rq_for_each_bio(bio, rq)
-		bio_for_each_segment(bio_vec, bio, i)
-			/* bio_vec is now current segment */
+	struct req_iterator iter;
+	rq_for_each_segment(bio_vec, rq, iter)
+		/* bio_vec is now current segment */
 
 I/O completion callbacks are per-bio rather than per-segment, so drivers
 that traverse bio chains on completion need to keep that in mind. Drivers

Documentation/block/ioprio.txt

@@ -86,8 +86,15 @@ extern int sys_ioprio_get(int, int);
 #error "Unsupported arch"
 #endif
 
-_syscall3(int, ioprio_set, int, which, int, who, int, ioprio);
-_syscall2(int, ioprio_get, int, which, int, who);
+static inline int ioprio_set(int which, int who, int ioprio)
+{
+	return syscall(__NR_ioprio_set, which, who, ioprio);
+}
+
+static inline int ioprio_get(int which, int who)
+{
+	return syscall(__NR_ioprio_get, which, who);
+}
 
 enum {
 	IOPRIO_CLASS_NONE,

MAINTAINERS

@@ -4156,6 +4156,13 @@ W:	http://oss.sgi.com/projects/xfs
 T:	git git://oss.sgi.com:8090/xfs/xfs-2.6.git
 S:	Supported
 
+XILINX SYSTEMACE DRIVER
+P:	Grant Likely
+M:	[email protected]
+W:	http://www.secretlab.ca/
+L:	[email protected]
+S:	Maintained
+
 XILINX UARTLITE SERIAL DRIVER
 P:	Peter Korsgaard
 M:	[email protected]

block/Makefile

@@ -11,3 +11,4 @@ obj-$(CONFIG_IOSCHED_DEADLINE)	+= deadline-iosched.o
 obj-$(CONFIG_IOSCHED_CFQ)	+= cfq-iosched.o
 
 obj-$(CONFIG_BLK_DEV_IO_TRACE)	+= blktrace.o
+obj-$(CONFIG_COMPAT)		+= compat_ioctl.o

block/blktrace.c

@@ -312,33 +312,26 @@ static struct rchan_callbacks blk_relay_callbacks = {
 /*
  * Setup everything required to start tracing
  */
-static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
-			   char __user *arg)
+int do_blk_trace_setup(struct request_queue *q, struct block_device *bdev,
+			struct blk_user_trace_setup *buts)
 {
-	struct blk_user_trace_setup buts;
 	struct blk_trace *old_bt, *bt = NULL;
 	struct dentry *dir = NULL;
 	char b[BDEVNAME_SIZE];
 	int ret, i;
 
-	if (copy_from_user(&buts, arg, sizeof(buts)))
-		return -EFAULT;
-
-	if (!buts.buf_size || !buts.buf_nr)
+	if (!buts->buf_size || !buts->buf_nr)
 		return -EINVAL;
 
-	strcpy(buts.name, bdevname(bdev, b));
+	strcpy(buts->name, bdevname(bdev, b));
 
 	/*
 	 * some device names have larger paths - convert the slashes
 	 * to underscores for this to work as expected
 	 */
-	for (i = 0; i < strlen(buts.name); i++)
-		if (buts.name[i] == '/')
-			buts.name[i] = '_';
-
-	if (copy_to_user(arg, &buts, sizeof(buts)))
-		return -EFAULT;
+	for (i = 0; i < strlen(buts->name); i++)
+		if (buts->name[i] == '/')
+			buts->name[i] = '_';
 
 	ret = -ENOMEM;
 	bt = kzalloc(sizeof(*bt), GFP_KERNEL);
@@ -350,7 +343,7 @@ static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
 		goto err;
 
 	ret = -ENOENT;
-	dir = blk_create_tree(buts.name);
+	dir = blk_create_tree(buts->name);
 	if (!dir)
 		goto err;
 
@@ -363,20 +356,21 @@ static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
 	if (!bt->dropped_file)
 		goto err;
 
-	bt->rchan = relay_open("trace", dir, buts.buf_size, buts.buf_nr, &blk_relay_callbacks, bt);
+	bt->rchan = relay_open("trace", dir, buts->buf_size,
+				buts->buf_nr, &blk_relay_callbacks, bt);
 	if (!bt->rchan)
 		goto err;
 
-	bt->act_mask = buts.act_mask;
+	bt->act_mask = buts->act_mask;
 	if (!bt->act_mask)
 		bt->act_mask = (u16) -1;
 
-	bt->start_lba = buts.start_lba;
-	bt->end_lba = buts.end_lba;
+	bt->start_lba = buts->start_lba;
+	bt->end_lba = buts->end_lba;
 	if (!bt->end_lba)
 		bt->end_lba = -1ULL;
 
-	bt->pid = buts.pid;
+	bt->pid = buts->pid;
 	bt->trace_state = Blktrace_setup;
 
 	ret = -EBUSY;
@@ -401,6 +395,26 @@ static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
 	return ret;
 }
 
+static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
+			   char __user *arg)
+{
+	struct blk_user_trace_setup buts;
+	int ret;
+
+	ret = copy_from_user(&buts, arg, sizeof(buts));
+	if (ret)
+		return -EFAULT;
+
+	ret = do_blk_trace_setup(q, bdev, &buts);
+	if (ret)
+		return ret;
+
+	if (copy_to_user(arg, &buts, sizeof(buts)))
+		return -EFAULT;
+
+	return 0;
+}
+
 static int blk_trace_startstop(struct request_queue *q, int start)
 {
 	struct blk_trace *bt;