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

* 'block' of git://brick.kernel.dk/data/git/linux-2.6-block: (67 commits)
  [PATCH] blk_queue_start_tag() shared map race fix
  [PATCH] Update axboe@suse.de email address
  [PATCH] fix creating zero sized bio mempools in low memory system
  [PATCH] CONFIG_BLOCK: blk_congestion_wait() fix
  [PATCH] CONFIG_BLOCK internal.h cleanups
  [PATCH] BLOCK: Make USB storage depend on SCSI rather than selecting it [try #6]
  [PATCH] BLOCK: Make it possible to disable the block layer [try #6]
  [PATCH] BLOCK: Remove no-longer necessary linux/buffer_head.h inclusions [try #6]
  [PATCH] BLOCK: Remove no-longer necessary linux/mpage.h inclusions [try #6]
  [PATCH] BLOCK: Move the msdos device ioctl compat stuff to the msdos driver [try #6]
  [PATCH] BLOCK: Move the Ext3 device ioctl compat stuff to the Ext3 driver [try #6]
  [PATCH] BLOCK: Move the Ext2 device ioctl compat stuff to the Ext2 driver [try #6]
  [PATCH] BLOCK: Move the ReiserFS device ioctl compat stuff to the ReiserFS driver [try #6]
  [PATCH] BLOCK: Move common FS-specific ioctls to linux/fs.h [try #6]
  [PATCH] BLOCK: Move the loop device ioctl compat stuff to the loop driver [try #6]
  [PATCH] BLOCK: Move __invalidate_device() to block_dev.c [try #6]
  [PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]
  [PATCH] BLOCK: Remove dependence on existence of blockdev_superblock [try #6]
  [PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]
  [PATCH] BLOCK: Don't call block_sync_page() from AFS [try #6]
  ...

MAINTAINERS

@@ -501,7 +501,7 @@ S:	Maintained
 
 BLOCK LAYER
 P:	Jens Axboe
-M:	axboe@suse.de
+M:	axboe@kernel.dk
 L:	linux-kernel@vger.kernel.org
 T:	git kernel.org:/pub/scm/linux/kernel/git/axboe/linux-2.6-block.git
 S:	Maintained
@@ -1380,7 +1380,7 @@ S:	Maintained
 
 IDE/ATAPI CDROM DRIVER
 P:	Jens Axboe
-M:	axboe@suse.de
+M:	axboe@kernel.dk
 L:	linux-kernel@vger.kernel.org
 W:	http://www.kernel.dk
 S:	Maintained
@@ -2531,7 +2531,7 @@ S:	Maintained
 
 SCSI CDROM DRIVER
 P:	Jens Axboe
-M:	axboe@suse.de
+M:	axboe@kernel.dk
 L:	linux-scsi@vger.kernel.org
 W:	http://www.kernel.dk
 S:	Maintained
@@ -2976,7 +2976,7 @@ S:	Maintained
 
 UNIFORM CDROM DRIVER
 P:	Jens Axboe
-M:	axboe@suse.de
+M:	axboe@kernel.dk
 L:	linux-kernel@vger.kernel.org
 W:	http://www.kernel.dk
 S:	Maintained

arch/mips/kernel/signal_n32.c

@@ -42,6 +42,8 @@
 
 #include "signal-common.h"
 
+extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
+
 /*
  * Including <asm/unistd.h> would give use the 64-bit syscall numbers ...
  */
@@ -81,8 +83,6 @@ struct rt_sigframe_n32 {
 #endif
 };
 
-extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);
-
 save_static_function(sysn32_rt_sigsuspend);
 __attribute_used__ noinline static int
 _sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)

arch/um/drivers/ubd_kern.c

@@ -981,8 +981,6 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req)
 	__u64 offset;
 	int len;
 
-	if(req->rq_status == RQ_INACTIVE) return(1);
-
 	/* This should be impossible now */
 	if((rq_data_dir(req) == WRITE) && !dev->openflags.w){
 		printk("Write attempted on readonly ubd device %s\n",

block/Kconfig

@@ -1,6 +1,24 @@
 #
 # Block layer core configuration
 #
+config BLOCK
+       bool "Enable the block layer"
+       default y
+       help
+	 This permits the block layer to be removed from the kernel if it's not
+	 needed (on some embedded devices for example).  If this option is
+	 disabled, then blockdev files will become unusable and some
+	 filesystems (such as ext3) will become unavailable.
+
+	 This option will also disable SCSI character devices and USB storage
+	 since they make use of various block layer definitions and
+	 facilities.
+
+	 Say Y here unless you know you really don't want to mount disks and
+	 suchlike.
+
+if BLOCK
+
 #XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64
 #for instance.
 config LBD
@@ -33,4 +51,6 @@ config LSF
 
 	  If unsure, say Y.
 
+endif
+
 source block/Kconfig.iosched

block/Kconfig.iosched

@@ -1,3 +1,4 @@
+if BLOCK
 
 menu "IO Schedulers"
 
@@ -67,3 +68,5 @@ config DEFAULT_IOSCHED
 	default "noop" if DEFAULT_NOOP
 
 endmenu
+
+endif

block/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the kernel block layer
 #
 
-obj-y	:= elevator.o ll_rw_blk.o ioctl.o genhd.o scsi_ioctl.o
+obj-$(CONFIG_BLOCK) := elevator.o ll_rw_blk.o ioctl.o genhd.o scsi_ioctl.o
 
 obj-$(CONFIG_IOSCHED_NOOP)	+= noop-iosched.o
 obj-$(CONFIG_IOSCHED_AS)	+= as-iosched.o