Merge master.kernel.org:/home/davem/BK/net-2.5

into home.transmeta.com:/home/torvalds/v2.5/linux

Documentation/i386/zero-page.txt

@@ -31,6 +31,7 @@ Offset	Type		Description
 
 0x1e0	unsigned long	ALT_MEM_K, alternative mem check, in Kb
 0x1e8	char		number of entries in E820MAP (below)
+0x1e9	unsigned char	number of entries in EDDBUF (below)
 0x1f1	char		size of setup.S, number of sectors
 0x1f2	unsigned short	MOUNT_ROOT_RDONLY (if !=0)
 0x1f4	unsigned short	size of compressed kernel-part in the
@@ -66,6 +67,7 @@ Offset	Type		Description
 0x220	4 bytes		(setup.S)
 0x224	unsigned short	setup.S heap end pointer
 0x2d0 - 0x600		E820MAP
+0x600 - 0x7D4		EDDBUF (setup.S)
 
 0x800	string, 2K max	COMMAND_LINE, the kernel commandline as
 			copied using CL_OFFSET.

Documentation/networking/e100.txt

 Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters
 ==============================================================
 
-April 9, 2002
+September 16, 2002
 
 
 Contents
@@ -19,26 +19,9 @@ In This Release
 ===============
 
 This file describes the Linux* Base Driver for the Intel(R) PRO/100 Family of
-Adapters, version 2.0.x.  This driver includes support for Itanium(TM)-based 
+Adapters, version 2.1.x.  This driver includes support for Itanium(TM)-based 
 systems.
 
-New for this release:
-
-   - Additional ethtool functionality, including link status test and EEPROM 
-     read/write. A third-party application can use the ethtool interface to 
-     get and set driver parameters.
-
-   - Support for Zero copy on 82550-based adapters. This feature provides 
-     faster data throughput and significant CPU usage improvement in systems 
-     that use the relevant system call (sendfile(2)).
-
-   - Support for large MTU-enabling interface (1504 bytes) with kernel's 
-     VLAN module
-
-   - Support for polling on RX
-
-   - Support for Wake On LAN* on 82550 and 82559-based adapters
-
 
 Supported Adapters
 ==================
@@ -96,8 +79,7 @@ CNR         PRO/100 VE Desktop Adapter              A10386-xxx, A10725-xxx,
 
 To verify that your adapter is supported, find the board ID number on the 
 adapter. Look for a label that has a barcode and a number in the format 
-123456-001 (six digits hyphen three digits). Match this to the list of 
-numbers above.
+A12345-001. Match this to the list of numbers above.
 
 For more information on how to identify your adapter, go to the Adapter & 
 Driver ID Guide at:
@@ -106,15 +88,20 @@ Driver ID Guide at:
 
 For the latest Intel PRO/100 network driver for Linux, see:
 
-  http://appsr.intel.com/scripts-df/support_intel.asp
+  http://downloadfinder.intel.com/scripts-df/support_intel.asp
 
 
 Command Line Parameters
 =======================
 
-The following parameters are used by entering them on the command line with 
-the modprobe or insmod command. For example, with two Intel PRO/100 PCI 
-adapters, entering:
+The following optional parameters are used by entering them on the command 
+line with the modprobe or insmod command using this syntax:
+
+     modprobe e100 [<option>=<VAL1>,<VAL2>,...]
+
+     insmod e100 [<option>=<VAL1>,<VAL2>,...] 
+
+For example, with two Intel PRO/100 PCI adapters, entering:
 	
      modprobe e100 TxDescriptors=32,128
 
@@ -122,16 +109,20 @@ loads the e100 driver with 32 TX resources for the first adapter and 128 TX
 resources for the second adapter. This configuration favors the second 
 adapter. The driver supports up to 16 network adapters concurrently.
 
+The default value for each parameter is generally the recommended setting,
+unless otherwise noted.
+
 NOTE: Giving any command line option the value "-1" causes the driver to use 
       the appropriate default value for that option, as if no value was 
       specified.
 
 
 BundleMax
-Valid Range: 0x1-0xFFFF
+Valid Range: 1-65535
 Default Value: 6
-   This parameter holds the maximum number of packets in a bundle. Suggested 
-   values range from 2 to 10. See "CPU Cycle Saver."
+   This parameter holds the maximum number of small packets (less than 128
+   bytes) in a bundle. Suggested values range from 2 to 10. See "CPU Cycle 
+   Saver."
 
 BundleSmallFr
 Valid Range: 0-1 (0=off, 1=on)
@@ -142,48 +133,33 @@ Default Value: 0
 e100_speed_duplex
 Valid Range: 0-4 (1=10half;2=10full;3=100half;4=100full)
 Default Value: 0
-   The default value of 0 is set to auto-negotiate if the link partner is set
-   to auto-negotiate. If the link partner is forced, e100_speed_duplex 
-   defaults to half-duplex. 
+   The default value of 0 sets the adapter to auto-negotiate. Other values
+   set the adapter to forced speed and duplex. 
    Example usage: insmod e100.o e100_speed_duplex=4,4 (for two adapters)
 
 flow_control
 Valid Range: 0-1 (0=off, 1=on)
 Default Value: 0
    This parameter controls the automatic generation(Tx) and response(Rx) to 
-   Ethernet PAUSE frames. flow_control should NOT be set to 1 when the e100 
+   Ethernet PAUSE frames. flow_control should NOT be set to 1 when the 
    adapter is connected to an interface that does not support Ethernet PAUSE 
    frames and when the e100_speed_duplex parameter is NOT set to zero. 
 
 IntDelay
-Valid Range: 0-0xFFFF (0=off)
+Valid Range: 0-65535 (0=off)
 Default Value: 1536
    This parameter holds the number of time units (in adapter terminology)
    until the adapter generates an interrupt. The recommended value for 
-   IntDelay is 0x600 (upon initialization). Suggested values range from 
-   0x200h to 0x800. See "CPU Cycle Saver."
+   IntDelay is 1536 (upon initialization). Suggested values range from 
+   512 to 2048. See "CPU Cycle Saver."
 
 IFS
 Valid Range: 0-1 (0=off, 1=on)
 Default Value: 1
   Inter Frame Spacing (IFS) aims to reduce the number of Ethernet frame
   collisions by altering the time between frame transmissions. When IFS is 
-  enabled the driver tries to find an optimal IFS value. However, some 
-  switches function better when IFS is disabled.
-
-PollingMaxWork
-Valid Range: 1-1024 (max number of RxDescriptors)
-Default Value: Specified number of RxDescriptors
-  This value specifies the maximum number of receive packets that are 
-  processed on a single polling call. This parameter is invalid if 
-  RxCongestionControl is set to 0.
-
-RxCongestionControl
-Valid Range: 0-1 (0=off, 1=on)
-Default Value: 1
-  1 enables polling mode. When the link is congested, the driver can decide 
-  to handle received packets by polling them, instead of waiting until 
-  interrupts occur.
+  enabled the driver tries to find an optimal IFS value. It is used only at 
+  half duplex.
 
 RxDescriptors
 Valid Range: 8-1024
@@ -200,13 +176,15 @@ Default Value: 64
    Increasing this value allows the protocol stack to queue more transmits at
    the driver level. The maximum value for Itanium-based systems is 64.
 
-ucode (not available for 82557-based adapters)
+ucode
 Valid Range: 0-1 (0=off, 1=on)
 Default Value: 0 for 82558-based adapters
-               1 for 82559(and higher)-based adapters
+               1 for 82559, 82550, and 82551-based adapters
    On uploads the micro code to the adapter, which enables CPU Cycle Saver. 
    See the section "CPU Cycle Saver" below.
-   Example usage: insmod e100.o ucode=0  (does not reduce CPU usage)
+   Example usage: insmod e100.o ucode=1
+
+   Not available on 82557-based adapters.
 
 XsumRX
 Valid Range: 0-1 (0=off, 1=on)
@@ -214,6 +192,8 @@ Default Value: 1
    On allows Rx checksum offloading for TCP/UDP packets. Requires that the 
    hardware support this feature.
 
+   Not available on 82557 and 82558-based adapters.
+
 
 CPU Cycle Saver
 ================
@@ -234,10 +214,11 @@ switching to and from the driver.
 CPU Cycle Saver consists of these arguments: IntDelay, BundleMax and 
 BundleSmallFr. When IntDelay is increased, the adapter waits longer for 
 frames to arrive before generating the interrupt. By increasing BundleMax, 
-the network adapter waits for the number of frames specified to arrive before 
-generating the interrupt. When BundleSmallFr is disabled, the adapter does 
-not bundle packets that are smaller than 128 bytes. Such small packets are 
-often, but not always, control packets that are better served immediately.
+the network adapter waits for the number of small frames (less than 128 bytes)
+specified to arrive before generating the interrupt. When BundleSmallFr is 
+disabled, the adapter does not bundle small packets. Such small packets are 
+often, but not always, control packets that are better served immediately;
+therefore, BundleSmallFr is disabled by default.
 
 For most users, it is recommended that CPU Cycle Saver be used with the 
 default values specified in the Command Line Parameters section. However, in 
@@ -249,7 +230,7 @@ ucode=0.
 Support
 =======
 
-For general information and support, go to the Intel support website at:
+For general information, go to the Intel support website at:
 
     http://support.intel.com
 

Documentation/networking/e1000.txt

 Linux* Base Driver for the Intel(R) PRO/1000 Family of Adapters
 ===============================================================
 
-August 6, 2002
+October 12, 2002
 
 
 Contents
@@ -20,7 +20,7 @@ In This Release
 ===============
 
 This file describes the Linux* Base Driver for the Intel(R) PRO/1000 Family
-of Adapters, version 4.3.x.  This driver includes support for 
+of Adapters, version 4.4.x.  This driver includes support for 
 Itanium(TM)-based systems.
 
 This release version includes the following:
@@ -32,7 +32,7 @@ This release version includes the following:
      default in supporting kernels. It is not supported on the Intel(R)
      PRO/1000 Gigabit Server Adapter.
 
-New features include:
+Features include:
 
    - Support for the 82545 and 82546-based adapters listed below
 
@@ -144,8 +144,7 @@ Default Value: 80
 
 RxIntDelay
 Valid Range: 0-65535 (0=off)
-Default Value: 0 (82542, 82543, and 82544-based adapters)
-               128 (82540, 82545, and 82546-based adapters)
+Default Value: 0
     This value delays the generation of receive interrupts in units of 1.024 
     microseconds.  Receive interrupt reduction can improve CPU efficiency if 
     properly tuned for specific network traffic. Increasing this value adds 
@@ -154,13 +153,12 @@ Default Value: 0 (82542, 82543, and 82544-based adapters)
     may be set too high, causing the driver to run out of available receive 
     descriptors.
 
-    CAUTION: When setting RxIntDelay to a value other than 0, adapters based 
-             on the Intel 82543 and 82544 LAN controllers may hang (stop 
-             transmitting) under certain network conditions. If this occurs a
-             message is logged in the system event log. In addition, the 
-             controller is automatically reset, restoring the network 
-             connection. To eliminate the potential for the hang ensure that 
-             RxIntDelay is set to 0.
+    CAUTION: When setting RxIntDelay to a value other than 0, adapters may 
+             hang (stop transmitting) under certain network conditions. If
+             this occurs a NETDEV WATCHDOG message is logged in the system
+             event log. In addition, the controller is automatically reset,
+             restoring the network connection. To eliminate the potential for
+             the hang ensure that RxIntDelay is set to 0.
 
 RxAbsIntDelay (82540, 82545, and 82546-based adapters only)
 Valid Range: 0-65535 (0=off)

arch/i386/Config.help

@@ -1094,3 +1094,11 @@ CONFIG_SCx200
 
   This support is also available as a module.  If compiled as a
   module, it will be called scx200.o.
+
+CONFIG_EDD
+  Say Y or M here if you want to enable BIOS Enhanced Disk Drive
+  Services real mode BIOS calls to determine which disk
+  BIOS tries boot from.  This information is then exported via driverfs.
+
+  This option is experimental, but believed to be safe,
+  and most disk controller BIOS vendors do not yet implement this feature.

arch/i386/boot/setup.S

@@ -45,6 +45,9 @@
  * New A20 code ported from SYSLINUX by H. Peter Anvin. AMD Elan bugfixes
  * by Robert Schwebel, December 2001 <robert@schwebel.de>
  *    
+ * BIOS Enhanced Disk Drive support
+ * by Matt Domsch <Matt_Domsch@dell.com> September 2002 
+ *
  */
 
 #include <linux/config.h>
@@ -53,6 +56,7 @@
 #include <linux/compile.h>
 #include <asm/boot.h>
 #include <asm/e820.h>
+#include <asm/edd.h>    
 #include <asm/page.h>
 	
 /* Signature words to ensure LILO loaded us right */
@@ -543,6 +547,49 @@ no_32_apm_bios:
 done_apm_bios:
 #endif
 
+#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
+# Do the BIOS Enhanced Disk Drive calls
+# This code is sensitive to the size of the structs in edd.h
+edd_start:  
+						# %ds points to the bootsector
+       						# result buffer for fn48
+    	movw	$EDDBUF+EDDEXTSIZE, %si		# in ds:si, fn41 results
+						# kept just before that    
+	movb	$0, (EDDNR)			# zero value at EDDNR
+    	movb	$0x80, %dl			# BIOS device 0x80
+
+edd_check_ext:
+	movb	$0x41, %ah			# Function 41
+	movw	$0x55aa, %bx			# magic
+	int	$0x13				# make the call
+	jc	edd_done			# no more BIOS devices
+
+    	cmpw	$0xAA55, %bx			# is magic right?
+	jne	edd_next			# nope, next...
+
+    	movb	%dl, %ds:-4(%si)		# store device number
+    	movb	%ah, %ds:-3(%si)		# store version
+	movw	%cx, %ds:-2(%si)		# store extensions
+	incb	(EDDNR)				# note that we stored something
+        
+edd_get_device_params:  
+	movw	$EDDPARMSIZE, %ds:(%si)		# put size
+    	movb	$0x48, %ah			# Function 48
+	int	$0x13				# make the call
+						# Don't check for fail return
+						# it doesn't matter.
+	movw	%si, %ax			# increment si
+	addw	$EDDPARMSIZE+EDDEXTSIZE, %ax
+	movw	%ax, %si
+
+edd_next:
+        incb	%dl				# increment to next device
+       	cmpb	$EDDMAXNR, (EDDNR) 		# Out of space?
+	jb	edd_check_ext			# keep looping
+    
+edd_done:   
+#endif
+
 # Now we want to move to protected mode ...
 	cmpw	$0, %cs:realmode_swtch
 	jz	rmodeswtch_normal

arch/i386/config.in

@@ -216,6 +216,10 @@ tristate '/dev/cpu/microcode - Intel IA32 CPU microcode support' CONFIG_MICROCOD
 tristate '/dev/cpu/*/msr - Model-specific register support' CONFIG_X86_MSR
 tristate '/dev/cpu/*/cpuid - CPU information support' CONFIG_X86_CPUID
 
+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+   tristate 'BIOS Enhanced Disk Drive calls determine boot disk (EXPERIMENTAL)' CONFIG_EDD
+fi
+
 choice 'High Memory Support' \
 	"off           CONFIG_NOHIGHMEM \
 	 4GB           CONFIG_HIGHMEM4G \

arch/i386/defconfig

@@ -70,6 +70,7 @@ CONFIG_X86_MCE_P4THERMAL=y
 # CONFIG_MICROCODE is not set
 # CONFIG_X86_MSR is not set
 # CONFIG_X86_CPUID is not set
+# CONFIG_EDD is not set
 CONFIG_NOHIGHMEM=y
 # CONFIG_HIGHMEM4G is not set
 # CONFIG_HIGHMEM64G is not set

arch/i386/kernel/Makefile

@@ -28,6 +28,7 @@ obj-$(CONFIG_X86_IO_APIC)	+= io_apic.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)	+= suspend.o
 obj-$(CONFIG_X86_NUMAQ)		+= numaq.o
 obj-$(CONFIG_PROFILING)		+= profile.o
+obj-$(CONFIG_EDD)             	+= edd.o
 
 EXTRA_AFLAGS   := -traditional
 

arch/i386/kernel/i386_ksyms.c

@@ -31,6 +31,7 @@
 #include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 #include <asm/nmi.h>
+#include <asm/edd.h>
 
 extern void dump_thread(struct pt_regs *, struct user *);
 extern spinlock_t rtc_lock;
@@ -201,3 +202,8 @@ EXPORT_SYMBOL(kmap_atomic);
 EXPORT_SYMBOL(kunmap_atomic);
 EXPORT_SYMBOL(kmap_atomic_to_page);
 #endif
+
+#ifdef CONFIG_EDD_MODULE
+EXPORT_SYMBOL(edd);
+EXPORT_SYMBOL(eddnr);
+#endif

arch/i386/kernel/setup.c

@@ -36,6 +36,7 @@
 #include <linux/highmem.h>
 #include <asm/e820.h>
 #include <asm/mpspec.h>
+#include <asm/edd.h>
 #include <asm/setup.h>
 #include <asm/arch_hooks.h>
 #include "setup_arch_pre.h"
@@ -466,6 +467,22 @@ static int __init copy_e820_map(struct e820entry * biosmap, int nr_map)
 	return 0;
 }
 
+#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
+unsigned char eddnr;
+struct edd_info edd[EDDNR];
+/**
+ * copy_edd() - Copy the BIOS EDD information into a safe place.
+ *
+ */
+static inline void copy_edd(void)
+{
+     eddnr = EDD_NR;
+     memcpy(edd, EDD_BUF, sizeof(edd));
+}
+#else
+#define copy_edd() do {} while (0)
+#endif
+
 /*
  * Do NOT EVER look at the BIOS memory size location.
  * It does not work on many machines.
@@ -843,6 +860,7 @@ void __init setup_arch(char **cmdline_p)
 #endif
 	ARCH_SETUP
 	setup_memory_region();
+	copy_edd();
 
 	if (!MOUNT_ROOT_RDONLY)
 		root_mountflags &= ~MS_RDONLY;

drivers/base/core.c

@@ -136,7 +136,7 @@ void put_device(struct device * dev)
 	list_del_init(&dev->g_list);
 	up(&device_sem);
 
-	BUG_ON((dev->state != DEVICE_GONE));
+	WARN_ON(dev->state != DEVICE_GONE);
 
 	device_del(dev);
 }

drivers/block/xd.c

@@ -150,6 +150,7 @@ static devfs_handle_t devfs_handle = NULL;
 static int __init xd_init(void)
 {
 	u_char i,controller;
+	u_char count = 0;
 	unsigned int address;
 	int err;
 

drivers/char/sysrq.c

@@ -349,8 +349,8 @@ static struct sysrq_key_op *sysrq_key_table[SYSRQ_KEY_TABLE_LENGTH] = {
 /* 8 */	&sysrq_loglevel_op,
 /* 9 */	&sysrq_loglevel_op,
 /* a */	NULL, /* Don't use for system provided sysrqs,
-		 it is handled specially on the spark
-		 and will never arive */
+		 it is handled specially on the sparc
+		 and will never arrive */
 /* b */	&sysrq_reboot_op,
 /* c */	NULL,
 /* d */	NULL,

drivers/net/e100/e100.h

@@ -121,7 +121,6 @@
 #define E100_DEFAULT_CPUSAVER_BUNDLE_MAX	6
 #define E100_DEFAULT_CPUSAVER_INTERRUPT_DELAY	0x600
 #define E100_DEFAULT_BUNDLE_SMALL_FR		false
-#define E100_DEFAULT_RX_CONGESTION_CONTROL	true
 
 /* end of configurables */
 
@@ -146,8 +145,6 @@ struct driver_stats {
 	unsigned long xmt_tco_pkts;
 	unsigned long rcv_tco_pkts;
 	unsigned long rx_intr_pkts;
-	unsigned long rx_tasklet_pkts;
-	unsigned long poll_intr_switch;
 };
 
 /* TODO: kill me when we can do C99 */
@@ -838,7 +835,6 @@ typedef struct _bd_dma_able_t {
 #define PRM_FC           0x00000004
 #define PRM_IFS          0x00000008
 #define PRM_BUNDLE_SMALL 0x00000010
-#define PRM_RX_CONG      0x00000020
 
 struct cfg_params {
 	int e100_speed_duplex;
@@ -847,7 +843,6 @@ struct cfg_params {
 	int IntDelay;
 	int BundleMax;
 	int ber;
-	int PollingMaxWork;
 	u32 b_params;
 };
 struct ethtool_lpbk_data{
@@ -949,8 +944,6 @@ struct e100_private {
 
 	u32 speed_duplex_caps;	/* adapter's speed/duplex capabilities */
 
-	struct tasklet_struct polling_tasklet;
-
 	/* WOL params for ethtool */
 	u32 wolsupported;
 	u32 wolopts;
@@ -961,6 +954,7 @@ struct e100_private {
 #ifdef CONFIG_PM
 	u32 pci_state[16];
 #endif
+	char ifname[IFNAMSIZ];
 };
 
 #define E100_AUTONEG        0

drivers/net/e100/e100_proc.c

@@ -249,8 +249,6 @@ static e100_proc_entry e100_proc_list[] = {
 	{"Rx_TCO_Packets",        read_gen_ulong, 0, bdp_drv_off(rcv_tco_pkts)},
 	{"\n",},
 	{"Rx_Interrupt_Packets",  read_gen_ulong, 0, bdp_drv_off(rx_intr_pkts)},
-	{"Rx_Polling_Packets",    read_gen_ulong, 0, bdp_drv_off(rx_tasklet_pkts)},
-	{"Polling_Interrupt_Switch", read_gen_ulong, 0, bdp_drv_off(poll_intr_switch)},
 	{"Identify_Adapter", 0, write_blink_led_timer, 0},
 	{"", 0, 0, 0}
 };
@@ -291,7 +289,7 @@ read_info(char *page, char **start, off_t off, int count, int *eof, void *data)
 	return generic_read(page, start, off, count, eof, len);
 }
 
-static struct proc_dir_entry * __devinit
+static struct proc_dir_entry *
 create_proc_rw(char *name, void *data, struct proc_dir_entry *parent,
 	       read_proc_t * read_proc, write_proc_t * write_proc)
 {
@@ -318,7 +316,7 @@ create_proc_rw(char *name, void *data, struct proc_dir_entry *parent,
 }
 
 void
-e100_remove_proc_subdir(struct e100_private *bdp)
+e100_remove_proc_subdir(struct e100_private *bdp, char *name)
 {
 	e100_proc_entry *pe;
 	char info[256];
@@ -329,8 +327,8 @@ e100_remove_proc_subdir(struct e100_private *bdp)
 		return;
 	}
 
-	len = strlen(bdp->device->name);
-	strncpy(info, bdp->device->name, sizeof (info));
+	len = strlen(bdp->ifname);
+	strncpy(info, bdp->ifname, sizeof (info));
 	strncat(info + len, ".info", sizeof (info) - len);
 
 	if (bdp->proc_parent) {
@@ -341,7 +339,7 @@ e100_remove_proc_subdir(struct e100_private *bdp)
 			remove_proc_entry(pe->name, bdp->proc_parent);
 		}
 
-		remove_proc_entry(bdp->device->name, adapters_proc_dir);
+		remove_proc_entry(bdp->ifname, adapters_proc_dir);
 		bdp->proc_parent = NULL;
 	}
 
@@ -351,7 +349,7 @@ e100_remove_proc_subdir(struct e100_private *bdp)
 	e100_proc_cleanup();
 }
 
-int __devinit
+int
 e100_create_proc_subdir(struct e100_private *bdp)
 {
 	struct proc_dir_entry *dev_dir;
@@ -366,7 +364,7 @@ e100_create_proc_subdir(struct e100_private *bdp)
 			return -ENOMEM;
 	}
 
-	strncpy(info, bdp->device->name, sizeof (info));
+	strncpy(info, bdp->ifname, sizeof (info));
 	len = strlen(info);
 	strncat(info + len, ".info", sizeof (info) - len);
 
@@ -376,12 +374,12 @@ e100_create_proc_subdir(struct e100_private *bdp)
 		return -ENOMEM;
 	}
 
-	dev_dir = create_proc_entry(bdp->device->name, S_IFDIR,
+	dev_dir = create_proc_entry(bdp->ifname, S_IFDIR,
 				    adapters_proc_dir);
 	bdp->proc_parent = dev_dir;
 
 	if (!dev_dir) {
-		e100_remove_proc_subdir(bdp);
+		e100_remove_proc_subdir(bdp, bdp->ifname);
 		return -ENOMEM;
 	}
 
@@ -396,7 +394,7 @@ e100_create_proc_subdir(struct e100_private *bdp)
 
 		if (!(create_proc_rw(pe->name, data, dev_dir,
 				     pe->read_proc, pe->write_proc))) {
-			e100_remove_proc_subdir(bdp);
+			e100_remove_proc_subdir(bdp, bdp->ifname);
 			return -ENOMEM;
 		}
 	}

drivers/net/e1000/e1000.h

@@ -95,6 +95,15 @@ struct e1000_adapter;
 #define E1000_RXBUFFER_8192  8192
 #define E1000_RXBUFFER_16384 16384
 
+/* Flow Control High-Watermark: 43464 bytes */
+#define E1000_FC_HIGH_THRESH 0xA9C8
+
+/* Flow Control Low-Watermark: 43456 bytes */
+#define E1000_FC_LOW_THRESH 0xA9C0
+
+/* Flow Control Pause Time: 858 usec */
+#define E1000_FC_PAUSE_TIME 0x0680
+
 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
 #define E1000_TX_QUEUE_WAKE	16
 /* How many Rx Buffers do we bundle into one write to the hardware ? */
@@ -194,5 +203,6 @@ struct e1000_adapter {
 
 
 	uint32_t pci_state[16];
+	char ifname[IFNAMSIZ];
 };
 #endif /* _E1000_H_ */

drivers/net/e1000/e1000_ethtool.c

@@ -117,7 +117,8 @@ e1000_ethtool_sset(struct e1000_adapter *adapter, struct ethtool_cmd *ecmd)
 
 	if(ecmd->autoneg == AUTONEG_ENABLE) {
 		hw->autoneg = 1;
-		hw->autoneg_advertised = (ecmd->advertising & 0x002F);
+		hw->autoneg_advertised = 0x002F;
+		ecmd->advertising = 0x002F;
 	} else {
 		hw->autoneg = 0;
 		switch(ecmd->speed + ecmd->duplex) {
@@ -228,6 +229,7 @@ e1000_ethtool_geeprom(struct e1000_adapter *adapter,
 
 	for(i = 0; i <= (last_word - first_word); i++)
 		e1000_read_eeprom(hw, first_word + i, &eeprom_buff[i]);
+
 	return 0;
 }
 
@@ -290,7 +292,6 @@ e1000_ethtool_gwol(struct e1000_adapter *adapter, struct ethtool_wolinfo *wol)
 	case E1000_DEV_ID_82543GC_FIBER:
 	case E1000_DEV_ID_82543GC_COPPER:
 	case E1000_DEV_ID_82544EI_FIBER:
-	default:
 		wol->supported = 0;
 		wol->wolopts   = 0;
 		return;
@@ -304,14 +305,7 @@ e1000_ethtool_gwol(struct e1000_adapter *adapter, struct ethtool_wolinfo *wol)
 		}
 		/* Fall Through */
 
-	case E1000_DEV_ID_82544EI_COPPER:
-	case E1000_DEV_ID_82544GC_COPPER:
-	case E1000_DEV_ID_82544GC_LOM:
-	case E1000_DEV_ID_82540EM:
-	case E1000_DEV_ID_82540EM_LOM:
-	case E1000_DEV_ID_82545EM_COPPER:
-	case E1000_DEV_ID_82545EM_FIBER:
-	case E1000_DEV_ID_82546EB_COPPER:
+	default:
 		wol->supported = WAKE_PHY | WAKE_UCAST | 
 				 WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
 		
@@ -340,7 +334,6 @@ e1000_ethtool_swol(struct e1000_adapter *adapter, struct ethtool_wolinfo *wol)
 	case E1000_DEV_ID_82543GC_FIBER:
 	case E1000_DEV_ID_82543GC_COPPER:
 	case E1000_DEV_ID_82544EI_FIBER:
-	default:
 		return wol->wolopts ? -EOPNOTSUPP : 0;
 
 	case E1000_DEV_ID_82546EB_FIBER:
@@ -349,14 +342,7 @@ e1000_ethtool_swol(struct e1000_adapter *adapter, struct ethtool_wolinfo *wol)
 			return wol->wolopts ? -EOPNOTSUPP : 0;
 		/* Fall Through */
 
-	case E1000_DEV_ID_82544EI_COPPER:
-	case E1000_DEV_ID_82544GC_COPPER:
-	case E1000_DEV_ID_82544GC_LOM:
-	case E1000_DEV_ID_82540EM:
-	case E1000_DEV_ID_82540EM_LOM:
-	case E1000_DEV_ID_82545EM_COPPER:
-	case E1000_DEV_ID_82545EM_FIBER:
-	case E1000_DEV_ID_82546EB_COPPER:
+	default:
 		if(wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE))
 			return -EOPNOTSUPP;
 
@@ -518,7 +504,8 @@ e1000_ethtool_ioctl(struct net_device *netdev, struct ifreq *ifr)
 		if(copy_from_user(&eeprom, addr, sizeof(eeprom)))
 			return -EFAULT;
 
-		if((err = e1000_ethtool_geeprom(adapter, &eeprom, eeprom_buff))<0)
+		if((err = e1000_ethtool_geeprom(adapter, 
+			&eeprom, eeprom_buff)))
 			return err;
 
 		if(copy_to_user(addr, &eeprom, sizeof(eeprom)))

drivers/net/e1000/e1000_hw.c

@@ -47,9 +47,9 @@ static void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t *eecd);
 static void e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count);
 static uint16_t e1000_shift_in_ee_bits(struct e1000_hw *hw);
 static void e1000_setup_eeprom(struct e1000_hw *hw);
-static void e1000_standby_eeprom(struct e1000_hw *hw);
 static void e1000_clock_eeprom(struct e1000_hw *hw);
 static void e1000_cleanup_eeprom(struct e1000_hw *hw);
+static void e1000_standby_eeprom(struct e1000_hw *hw);
 static int32_t e1000_id_led_init(struct e1000_hw * hw);
 
 /******************************************************************************
@@ -88,6 +88,9 @@ e1000_set_mac_type(struct e1000_hw *hw)
         break;
     case E1000_DEV_ID_82540EM:
     case E1000_DEV_ID_82540EM_LOM:
+    case E1000_DEV_ID_82540EP:
+    case E1000_DEV_ID_82540EP_LOM:
+    case E1000_DEV_ID_82540EP_LP:
         hw->mac_type = e1000_82540;
         break;
     case E1000_DEV_ID_82545EM_COPPER:
@@ -655,6 +658,8 @@ e1000_setup_copper_link(struct e1000_hw *hw)
         return -E1000_ERR_PHY;
     }
     phy_data |= M88E1000_EPSCR_TX_CLK_25;
+
+    if (hw->phy_revision < M88E1011_I_REV_4) {
         /* Configure Master and Slave downshift values */
         phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
                       M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
@@ -664,6 +669,7 @@ e1000_setup_copper_link(struct e1000_hw *hw)
             DEBUGOUT("PHY Write Error\n");
             return -E1000_ERR_PHY;
         }
+    }
 
     /* SW Reset the PHY so all changes take effect */
     ret_val = e1000_phy_reset(hw);
@@ -1008,7 +1014,6 @@ e1000_phy_force_speed_duplex(struct e1000_hw *hw)
     /* Write the configured values back to the Device Control Reg. */
     E1000_WRITE_REG(hw, CTRL, ctrl);
 
-    /* Write the MII Control Register with the new PHY configuration. */
     if(e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data) < 0) {
         DEBUGOUT("PHY Read Error\n");
         return -E1000_ERR_PHY;
@@ -1026,6 +1031,8 @@ e1000_phy_force_speed_duplex(struct e1000_hw *hw)
 
     /* Need to reset the PHY or these changes will be ignored */
     mii_ctrl_reg |= MII_CR_RESET;
+
+    /* Write back the modified PHY MII control register. */
     if(e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg) < 0) {
         DEBUGOUT("PHY Write Error\n");
         return -E1000_ERR_PHY;
@@ -2100,6 +2107,7 @@ e1000_detect_gig_phy(struct e1000_hw *hw)
         return -E1000_ERR_PHY;
     }
     hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
+    hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
 
     switch(hw->mac_type) {
     case e1000_82543:
@@ -2242,7 +2250,7 @@ e1000_raise_ee_clk(struct e1000_hw *hw,
                    uint32_t *eecd)
 {
     /* Raise the clock input to the EEPROM (by setting the SK bit), and then
-     * wait 50 microseconds.
+     * wait <delay> microseconds.
      */
     *eecd = *eecd | E1000_EECD_SK;
     E1000_WRITE_REG(hw, EECD, *eecd);
@@ -2331,11 +2339,11 @@ e1000_shift_in_ee_bits(struct e1000_hw *hw)
     uint32_t i;
     uint16_t data;
 
-    /* In order to read a register from the EEPROM, we need to shift 16 bits 
-     * in from the EEPROM. Bits are "shifted in" by raising the clock input to
-     * the EEPROM (setting the SK bit), and then reading the value of the "DO"
-     * bit.  During this "shifting in" process the "DI" bit should always be 
-     * clear..
+    /* In order to read a register from the EEPROM, we need to shift 'count'
+     * bits in from the EEPROM. Bits are "shifted in" by raising the clock
+     * input to the EEPROM (setting the SK bit), and then reading the value of
+     * the "DO" bit.  During this "shifting in" process the "DI" bit should
+     * always be clear.
      */
 
     eecd = E1000_READ_REG(hw, EECD);
@@ -3140,6 +3148,9 @@ e1000_setup_led(struct e1000_hw *hw)
         ledctl |= (E1000_LEDCTL_MODE_LED_OFF << E1000_LEDCTL_LED0_MODE_SHIFT);
         E1000_WRITE_REG(hw, LEDCTL, ledctl);
         break;
+    case E1000_DEV_ID_82540EP:
+    case E1000_DEV_ID_82540EP_LOM:
+    case E1000_DEV_ID_82540EP_LP:
     case E1000_DEV_ID_82540EM:
     case E1000_DEV_ID_82540EM_LOM:
     case E1000_DEV_ID_82545EM_COPPER:
@@ -3173,6 +3184,9 @@ e1000_cleanup_led(struct e1000_hw *hw)
     case E1000_DEV_ID_82544GC_LOM:
         /* No cleanup necessary */
         break;
+    case E1000_DEV_ID_82540EP:
+    case E1000_DEV_ID_82540EP_LOM:
+    case E1000_DEV_ID_82540EP_LP:
     case E1000_DEV_ID_82540EM:
     case E1000_DEV_ID_82540EM_LOM:
     case E1000_DEV_ID_82545EM_COPPER:
@@ -3223,6 +3237,9 @@ e1000_led_on(struct e1000_hw *hw)
         ctrl |= E1000_CTRL_SWDPIO0;
         E1000_WRITE_REG(hw, CTRL, ctrl);
         break;
+    case E1000_DEV_ID_82540EP:
+    case E1000_DEV_ID_82540EP_LOM:
+    case E1000_DEV_ID_82540EP_LP:
     case E1000_DEV_ID_82540EM:
     case E1000_DEV_ID_82540EM_LOM:
     case E1000_DEV_ID_82545EM_COPPER:
@@ -3270,6 +3287,9 @@ e1000_led_off(struct e1000_hw *hw)
         ctrl |= E1000_CTRL_SWDPIO0;
         E1000_WRITE_REG(hw, CTRL, ctrl);
         break;
+    case E1000_DEV_ID_82540EP:
+    case E1000_DEV_ID_82540EP_LOM:
+    case E1000_DEV_ID_82540EP_LP:
     case E1000_DEV_ID_82540EM:
     case E1000_DEV_ID_82540EM_LOM:
     case E1000_DEV_ID_82545EM_COPPER:

drivers/net/e1000/e1000_hw.h

@@ -246,11 +246,14 @@ void e1000_write_reg_io(struct e1000_hw *hw, uint32_t offset, uint32_t value);
 #define E1000_DEV_ID_82544GC_LOM         0x100D
 #define E1000_DEV_ID_82540EM             0x100E
 #define E1000_DEV_ID_82540EM_LOM         0x1015
+#define E1000_DEV_ID_82540EP_LOM         0x1016
+#define E1000_DEV_ID_82540EP             0x1017
+#define E1000_DEV_ID_82540EP_LP          0x101E
 #define E1000_DEV_ID_82545EM_COPPER      0x100F
 #define E1000_DEV_ID_82545EM_FIBER       0x1011
 #define E1000_DEV_ID_82546EB_COPPER      0x1010
 #define E1000_DEV_ID_82546EB_FIBER       0x1012
-#define NUM_DEV_IDS 13
+#define NUM_DEV_IDS 16
 
 #define NODE_ADDRESS_SIZE 6
 #define ETH_LENGTH_OF_ADDRESS 6
@@ -851,6 +854,7 @@ struct e1000_hw {
     e1000_bus_type bus_type;
     uint32_t io_base;
     uint32_t phy_id;
+    uint32_t phy_revision;
     uint32_t phy_addr;
     uint32_t original_fc;
     uint32_t txcw;
@@ -1755,6 +1759,7 @@ struct e1000_hw {
 #define M88E1011_I_PHY_ID  0x01410C20
 #define M88E1000_12_PHY_ID M88E1000_E_PHY_ID
 #define M88E1000_14_PHY_ID M88E1000_E_PHY_ID
+#define M88E1011_I_REV_4   0x04
 
 /* Miscellaneous PHY bit definitions. */
 #define PHY_PREAMBLE        0xFFFFFFFF

drivers/net/e1000/e1000_osdep.h

@@ -96,6 +96,6 @@ typedef enum {
         readl((a)->hw_addr + E1000_##reg + ((offset) << 2)) : \
         readl((a)->hw_addr + E1000_82542_##reg + ((offset) << 2)))
 
-#define E1000_WRITE_FLUSH(a) ((void)E1000_READ_REG(a, STATUS))
+#define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, STATUS)
 
 #endif /* _E1000_OSDEP_H_ */

drivers/net/e1000/e1000_param.c

@@ -197,8 +197,7 @@ E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
 #define MIN_RXD                       80
 #define MAX_82544_RXD               4096
 
-#define DEFAULT_RDTR                 128
-#define DEFAULT_RDTR_82544             0
+#define DEFAULT_RDTR                   0
 #define MAX_RXDELAY               0xFFFF
 #define MIN_RXDELAY                    0
 
@@ -315,7 +314,8 @@ e1000_check_options(struct e1000_adapter *adapter)
 		};
 		struct e1000_desc_ring *tx_ring = &adapter->tx_ring;
 		e1000_mac_type mac_type = adapter->hw.mac_type;
-		opt.arg.r.max = mac_type < e1000_82544 ? MAX_TXD : MAX_82544_TXD;
+		opt.arg.r.max = mac_type < e1000_82544 ? 
+			MAX_TXD : MAX_82544_TXD;
 
 		tx_ring->count = TxDescriptors[bd];
 		e1000_validate_option(&tx_ring->count, &opt);
@@ -398,16 +398,13 @@ e1000_check_options(struct e1000_adapter *adapter)
 	}
 	{ /* Receive Interrupt Delay */
 		char *rdtr = "using default of " __MODULE_STRING(DEFAULT_RDTR);
-		char *rdtr_82544 = "using default of "
-		       		   __MODULE_STRING(DEFAULT_RDTR_82544);
 		struct e1000_option opt = {
 			.type = range_option,
 			.name = "Receive Interrupt Delay",
 			.arg  = { r: { min: MIN_RXDELAY, max: MAX_RXDELAY }}
 		};
-		e1000_mac_type mac_type = adapter->hw.mac_type;
-		opt.def = mac_type > e1000_82544 ? DEFAULT_RDTR : 0;
-		opt.err = mac_type > e1000_82544 ? rdtr : rdtr_82544;
+		opt.def = DEFAULT_RDTR;
+		opt.err = rdtr;
 
 		adapter->rx_int_delay = RxIntDelay[bd];
 		e1000_validate_option(&adapter->rx_int_delay, &opt);

drivers/net/e1000/e1000_proc.c

@@ -132,7 +132,7 @@ e1000_proc_single_read(char *page, char **start, off_t off,
 	return e1000_proc_read(page, start, off, count, eof);
 }
 
-static void __devexit
+static void
 e1000_proc_dirs_free(char *name, struct list_head *proc_list_head)
 {
 	struct proc_dir_entry *intel_proc_dir, *proc_dir;
@@ -188,7 +188,7 @@ e1000_proc_dirs_free(char *name, struct list_head *proc_list_head)
 }
 
 
-static int __devinit
+static int
 e1000_proc_singles_create(struct proc_dir_entry *parent,
                           struct list_head *proc_list_head)
 {
@@ -215,7 +215,7 @@ e1000_proc_singles_create(struct proc_dir_entry *parent,
 	return 1;
 }
 
-static void __devinit
+static void
 e1000_proc_dirs_create(void *data, char *name, 
                        struct list_head *proc_list_head)
 {
@@ -255,7 +255,7 @@ e1000_proc_dirs_create(void *data, char *name,
 	info_entry->data = proc_list_head;
 }
 
-static void __devinit
+static void
 e1000_proc_list_add(struct list_head *proc_list_head, char *tag,
                     void *data, size_t len, 
 		    char *(*func)(void *, size_t, char *))
@@ -274,7 +274,7 @@ e1000_proc_list_add(struct list_head *proc_list_head, char *tag,
 	list_add_tail(&new->list, proc_list_head);
 }
 
-static void __devexit
+static void
 e1000_proc_list_free(struct list_head *proc_list_head)
 {
 	struct proc_list *elem;
@@ -542,7 +542,7 @@ e1000_proc_rx_status(void *data, size_t len, char *buf)
 #define LIST_ADD_H(T,D) LIST_ADD_F((T), (D), e1000_proc_hex)
 #define LIST_ADD_U(T,D) LIST_ADD_F((T), (D), e1000_proc_unsigned)
 
-static void __devinit
+static void
 e1000_proc_list_setup(struct e1000_adapter *adapter)
 {
 	struct e1000_hw *hw = &adapter->hw;
@@ -572,7 +572,7 @@ e1000_proc_list_setup(struct e1000_adapter *adapter)
 	}
 
 	LIST_ADD_U("IRQ", &adapter->pdev->irq);
-	LIST_ADD_S("System_Device_Name", adapter->netdev->name);
+	LIST_ADD_S("System_Device_Name", adapter->ifname);
 	LIST_ADD_F("Current_HWaddr",
 	            adapter->netdev->dev_addr, e1000_proc_hwaddr);
 	LIST_ADD_F("Permanent_HWaddr",
@@ -670,13 +670,13 @@ e1000_proc_list_setup(struct e1000_adapter *adapter)
  * @adapter: board private structure
  */
 
-void __devinit
+void
 e1000_proc_dev_setup(struct e1000_adapter *adapter)
 {
 	e1000_proc_list_setup(adapter);
 
 	e1000_proc_dirs_create(adapter, 
-	                       adapter->netdev->name,
+	                       adapter->ifname,
 	                       &adapter->proc_list_head);
 }
 
@@ -685,18 +685,18 @@ e1000_proc_dev_setup(struct e1000_adapter *adapter)
  * @adapter: board private structure
  */
 
-void __devexit
+void
 e1000_proc_dev_free(struct e1000_adapter *adapter)
 {
-	e1000_proc_dirs_free(adapter->netdev->name, &adapter->proc_list_head);
+	e1000_proc_dirs_free(adapter->ifname, &adapter->proc_list_head);
 
 	e1000_proc_list_free(&adapter->proc_list_head);
 }
 
 #else /* CONFIG_PROC_FS */
 
-void __devinit e1000_proc_dev_setup(struct e1000_adapter *adapter) {}
-void __devexit e1000_proc_dev_free(struct e1000_adapter *adapter) {}
+void e1000_proc_dev_setup(struct e1000_adapter *adapter) {}
+void e1000_proc_dev_free(struct e1000_adapter *adapter) {}
 
 #endif /* CONFIG_PROC_FS */
 

drivers/net/mii.c

@@ -192,9 +192,12 @@ int mii_nway_restart (struct mii_if_info *mii)
 
 void mii_check_link (struct mii_if_info *mii)
 {
-	if (mii_link_ok(mii))
+	int cur_link = mii_link_ok(mii);
+	int prev_link = netif_carrier_ok(mii->dev);
+
+	if (cur_link && !prev_link)
 		netif_carrier_on(mii->dev);
-	else
+	else if (prev_link && !cur_link)
 		netif_carrier_off(mii->dev);
 }
 

drivers/net/natsemi.c

@@ -184,7 +184,7 @@
 				 NETIF_MSG_WOL		| \
 				 NETIF_MSG_RX_ERR	| \
 				 NETIF_MSG_TX_ERR)
-static int debug = NATSEMI_DEF_MSG;
+static int debug = -1;
 
 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
 static int max_interrupt_work = 20;
@@ -256,7 +256,7 @@ MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i");
 MODULE_PARM_DESC(max_interrupt_work, 
 	"DP8381x maximum events handled per interrupt");
 MODULE_PARM_DESC(mtu, "DP8381x MTU (all boards)");
-MODULE_PARM_DESC(debug, "DP8381x default debug bitmask");
+MODULE_PARM_DESC(debug, "DP8381x default debug level");
 MODULE_PARM_DESC(rx_copybreak, 
 	"DP8381x copy breakpoint for copy-only-tiny-frames");
 MODULE_PARM_DESC(options, 
@@ -796,7 +796,7 @@ static int __devinit natsemi_probe1 (struct pci_dev *pdev,
 	pci_set_drvdata(pdev, dev);
 	np->iosize = iosize;
 	spin_lock_init(&np->lock);
-	np->msg_enable = debug;
+	np->msg_enable = (debug >= 0) ? (1<<debug)-1 : NATSEMI_DEF_MSG;
 	np->hands_off = 0;
 
 	/* Reset the chip to erase previous misconfiguration. */

drivers/scsi/hosts.c

@@ -474,6 +474,8 @@ int scsi_register_host(Scsi_Host_Template *shost_tp)
 	struct list_head *lh;
 	struct Scsi_Host *shost;
 
+	INIT_LIST_HEAD(&shost_tp->shtp_list);
+
 	/*
 	 * Check no detect routine.
 	 */

fs/bio.c

@@ -149,12 +149,13 @@ struct bio *bio_alloc(int gfp_mask, int nr_iovecs)
 	bio_init(bio);
 
 	if (unlikely(!nr_iovecs))
-		goto out;
+		goto noiovec;
 
 	bvl = bvec_alloc(gfp_mask, nr_iovecs, &idx);
 	if (bvl) {
 		bio->bi_flags |= idx << BIO_POOL_OFFSET;
 		bio->bi_max_vecs = bvec_array[idx].nr_vecs;
+noiovec:
 		bio->bi_io_vec = bvl;
 		bio->bi_destructor = bio_destructor;
 out:

include/asm-alpha/system.h

@@ -151,14 +151,19 @@ __asm__ __volatile__("mb": : :"memory")
 #define wmb() \
 __asm__ __volatile__("wmb": : :"memory")
 
+#define read_barrier_depends() \
+__asm__ __volatile__("mb": : :"memory")
+
 #ifdef CONFIG_SMP
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
 #else
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	barrier()
 #endif
 
 #define set_mb(var, value) \

include/asm-arm/system.h

@@ -52,6 +52,7 @@ extern asmlinkage void __backtrace(void);
 #define mb() __asm__ __volatile__ ("" : : : "memory")
 #define rmb() mb()
 #define wmb() mb()
+#define read_barrier_depends() do { } while(0)
 #define set_mb(var, value)  do { var = value; mb(); } while (0)
 #define set_wmb(var, value) do { var = value; wmb(); } while (0)
 #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
@@ -78,12 +79,14 @@ extern struct task_struct *__switch_to(struct thread_info *, struct thread_info
 #define smp_mb()		mb()
 #define smp_rmb()		rmb()
 #define smp_wmb()		wmb()
+#define smp_read_barrier_depends()		read_barrier_depends()
 
 #else
 
 #define smp_mb()		barrier()
 #define smp_rmb()		barrier()
 #define smp_wmb()		barrier()
+#define smp_read_barrier_depends()		do { } while(0)
 
 #define clf()			__clf()
 #define stf()			__stf()

include/asm-cris/system.h

@@ -150,6 +150,7 @@ static inline unsigned long __xchg(unsigned long x, void * ptr, int size)
 #define mb() __asm__ __volatile__ ("" : : : "memory")
 #define rmb() mb()
 #define wmb() mb()
+#define read_barrier_depends() do { } while(0)
 #define set_mb(var, value)  do { var = value; mb(); } while (0)
 #define set_wmb(var, value) do { var = value; wmb(); } while (0)
 
@@ -157,10 +158,12 @@ static inline unsigned long __xchg(unsigned long x, void * ptr, int size)
 #define smp_mb()        mb()
 #define smp_rmb()       rmb()
 #define smp_wmb()       wmb()
+#define smp_read_barrier_depends()     read_barrier_depends()
 #else
 #define smp_mb()        barrier()
 #define smp_rmb()       barrier()
 #define smp_wmb()       barrier()
+#define smp_read_barrier_depends()     do { } while(0)
 #endif
 
 #define iret()

include/asm-i386/edd.h

+/*
+ * linux/include/asm-i386/edd.h
+ *  Copyright (C) 2002 Dell Computer Corporation
+ *  by Matt Domsch <Matt_Domsch@dell.com>
+ *
+ * structures and definitions for the int 13h, ax={41,48}h
+ * BIOS Enhanced Disk Drive Services
+ * This is based on the T13 group document D1572 Revision 0 (August 14 2002)
+ * available at http://www.t13.org/docs2002/d1572r0.pdf.  It is
+ * very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
+ *
+ * In a nutshell, arch/i386/boot/setup.S populates a scratch table
+ * in the empty_zero_block that contains a list of BIOS-enumerated
+ * boot devices.
+ * In arch/i386/kernel/setup.c, this information is
+ * transferred into the edd structure, and in arch/i386/kernel/edd.c, that
+ * information is used to identify BIOS boot disk.  The code in setup.S
+ * is very sensitive to the size of these structures.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2.0 as published by
+ * the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+#ifndef _ASM_I386_EDD_H
+#define _ASM_I386_EDD_H
+
+#define EDDNR 0x1e9		/* addr of number of edd_info structs at EDDBUF
+				   in empty_zero_block - treat this as 1 byte  */
+#define EDDBUF	0x600		/* addr of edd_info structs in empty_zero_block */
+#define EDDMAXNR 6		/* number of edd_info structs starting at EDDBUF  */
+#define EDDEXTSIZE 4		/* change these if you muck with the structures */
+#define EDDPARMSIZE 74
+
+#ifndef __ASSEMBLY__
+
+#define EDD_EXT_FIXED_DISK_ACCESS           (1 << 0)
+#define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1)
+#define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2)
+#define EDD_EXT_64BIT_EXTENSIONS            (1 << 3)
+
+#define EDD_INFO_DMA_BOUNDRY_ERROR_TRANSPARENT (1 << 0)
+#define EDD_INFO_GEOMETRY_VALID                (1 << 1)
+#define EDD_INFO_REMOVABLE                     (1 << 2)
+#define EDD_INFO_WRITE_VERIFY                  (1 << 3)
+#define EDD_INFO_MEDIA_CHANGE_NOTIFICATION     (1 << 4)
+#define EDD_INFO_LOCKABLE                      (1 << 5)
+#define EDD_INFO_NO_MEDIA_PRESENT              (1 << 6)
+#define EDD_INFO_USE_INT13_FN50                (1 << 7)
+
+struct edd_device_params {
+	u16 length;
+	u16 info_flags;
+	u32 num_default_cylinders;
+	u32 num_default_heads;
+	u32 sectors_per_track;
+	u64 number_of_sectors;
+	u16 bytes_per_sector;
+	u32 dpte_ptr;		/* 0xFFFFFFFF for our purposes */
+	u16 key;		/* = 0xBEDD */
+	u8 device_path_info_length;	/* = 44 */
+	u8 reserved2;
+	u16 reserved3;
+	u8 host_bus_type[4];
+	u8 interface_type[8];
+	union {
+		struct {
+			u16 base_address;
+			u16 reserved1;
+			u32 reserved2;
+		} __attribute__ ((packed)) isa;
+		struct {
+			u8 bus;
+			u8 slot;
+			u8 function;
+			u8 channel;
+			u32 reserved;
+		} __attribute__ ((packed)) pci;
+		/* pcix is same as pci */
+		struct {
+			u64 reserved;
+		} __attribute__ ((packed)) ibnd;
+		struct {
+			u64 reserved;
+		} __attribute__ ((packed)) xprs;
+		struct {
+			u64 reserved;
+		} __attribute__ ((packed)) htpt;
+		struct {
+			u64 reserved;
+		} __attribute__ ((packed)) unknown;
+	} interface_path;
+	union {
+		struct {
+			u8 device;
+			u8 reserved1;
+			u16 reserved2;
+			u32 reserved3;
+			u64 reserved4;
+		} __attribute__ ((packed)) ata;
+		struct {
+			u8 device;
+			u8 lun;
+			u8 reserved1;
+			u8 reserved2;
+			u32 reserved3;
+			u64 reserved4;
+		} __attribute__ ((packed)) atapi;
+		struct {
+			u16 id;
+			u64 lun;
+			u16 reserved1;
+			u32 reserved2;
+		} __attribute__ ((packed)) scsi;
+		struct {
+			u64 serial_number;
+			u64 reserved;
+		} __attribute__ ((packed)) usb;
+		struct {
+			u64 eui;
+			u64 reserved;
+		} __attribute__ ((packed)) i1394;
+		struct {
+			u64 wwid;
+			u64 lun;
+		} __attribute__ ((packed)) fibre;
+		struct {
+			u64 identity_tag;
+			u64 reserved;
+		} __attribute__ ((packed)) i2o;
+		struct {
+			u32 array_number;
+			u32 reserved1;
+			u64 reserved2;
+		} __attribute((packed)) raid;
+		struct {
+			u8 device;
+			u8 reserved1;
+			u16 reserved2;
+			u32 reserved3;
+			u64 reserved4;
+		} __attribute__ ((packed)) sata;
+		struct {
+			u64 reserved1;
+			u64 reserved2;
+		} __attribute__ ((packed)) unknown;
+	} device_path;
+	u8 reserved4;
+	u8 checksum;
+} __attribute__ ((packed));
+
+struct edd_info {
+	u8 device;
+	u8 version;
+	u16 interface_support;
+	struct edd_device_params params;
+} __attribute__ ((packed));
+
+extern struct edd_info edd[EDDNR];
+extern unsigned char eddnr;
+#endif				/*!__ASSEMBLY__ */
+
+#endif				/* _ASM_I386_EDD_H */

include/asm-i386/setup.h

@@ -37,6 +37,8 @@
 #define KERNEL_START (*(unsigned long *) (PARAM+0x214))
 #define INITRD_START (*(unsigned long *) (PARAM+0x218))
 #define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))
+#define EDD_NR     (*(unsigned char *) (PARAM+EDDNR))
+#define EDD_BUF     ((struct edd_info *) (PARAM+EDDBUF))
 #define COMMAND_LINE ((char *) (PARAM+2048))
 #define COMMAND_LINE_SIZE 256
 

include/asm-i386/system.h

@@ -286,6 +286,60 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define mb() 	__asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
 #define rmb()	mb()
 
+/**
+ * read_barrier_depends - Flush all pending reads that subsequents reads
+ * depend on.
+ *
+ * No data-dependent reads from memory-like regions are ever reordered
+ * over this barrier.  All reads preceding this primitive are guaranteed
+ * to access memory (but not necessarily other CPUs' caches) before any
+ * reads following this primitive that depend on the data return by
+ * any of the preceding reads.  This primitive is much lighter weight than
+ * rmb() on most CPUs, and is never heavier weight than is
+ * rmb().
+ *
+ * These ordering constraints are respected by both the local CPU
+ * and the compiler.
+ *
+ * Ordering is not guaranteed by anything other than these primitives,
+ * not even by data dependencies.  See the documentation for
+ * memory_barrier() for examples and URLs to more information.
+ *
+ * For example, the following code would force ordering (the initial
+ * value of "a" is zero, "b" is one, and "p" is "&a"):
+ *
+ * <programlisting>
+ *	CPU 0				CPU 1
+ *
+ *	b = 2;
+ *	memory_barrier();
+ *	p = &b;				q = p;
+ *					read_barrier_depends();
+ *					d = *q;
+ * </programlisting>
+ *
+ * because the read of "*q" depends on the read of "p" and these
+ * two reads are separated by a read_barrier_depends().  However,
+ * the following code, with the same initial values for "a" and "b":
+ *
+ * <programlisting>
+ *	CPU 0				CPU 1
+ *
+ *	a = 2;
+ *	memory_barrier();
+ *	b = 3;				y = b;
+ *					read_barrier_depends();
+ *					x = a;
+ * </programlisting>
+ *
+ * does not enforce ordering, since there is no data dependency between
+ * the read of "a" and the read of "b".  Therefore, on some CPUs, such
+ * as Alpha, "y" could be set to 3 and "x" to 0.  Use rmb()
+ * in cases like thiswhere there are no data dependencies.
+ **/
+
+#define read_barrier_depends()	do { } while(0)
+
 #ifdef CONFIG_X86_OOSTORE
 #define wmb() 	__asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
 #else
@@ -296,11 +350,13 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
 #define set_mb(var, value) do { xchg(&var, value); } while (0)
 #else
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	do { } while(0)
 #define set_mb(var, value) do { var = value; barrier(); } while (0)
 #endif
 

include/asm-ia64/system.h

@@ -85,15 +85,18 @@ ia64_insn_group_barrier (void)
 #define mb()	__asm__ __volatile__ ("mf" ::: "memory")
 #define rmb()	mb()
 #define wmb()	mb()
+#define read_barrier_depends()	do { } while(0)
 
 #ifdef CONFIG_SMP
 # define smp_mb()	mb()
 # define smp_rmb()	rmb()
 # define smp_wmb()	wmb()
+# define smp_read_barrier_depends()	read_barrier_depends()
 #else
 # define smp_mb()	barrier()
 # define smp_rmb()	barrier()
 # define smp_wmb()	barrier()
+# define smp_read_barrier_depends()	do { } while(0)
 #endif
 
 /*

include/asm-mips/system.h

@@ -146,6 +146,7 @@ extern void __global_restore_flags(unsigned long);
 #define rmb()	do { } while(0)
 #define wmb()	wbflush()
 #define mb()	wbflush()
+#define read_barrier_depends()	do { } while(0)
 
 #else /* CONFIG_CPU_HAS_WB  */
 
@@ -161,6 +162,7 @@ __asm__ __volatile__(					\
 	: "memory")
 #define rmb() mb()
 #define wmb() mb()
+#define read_barrier_depends()	do { } while(0)
 
 #endif /* CONFIG_CPU_HAS_WB  */
 
@@ -168,10 +170,12 @@ __asm__ __volatile__(					\
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
 #else
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	do { } while(0)
 #endif
 
 #define set_mb(var, value) \

include/asm-mips64/system.h

@@ -142,15 +142,18 @@ __asm__ __volatile__(					\
 	: "memory")
 #define rmb() mb()
 #define wmb() mb()
+#define read_barrier_depends()	do { } while(0)
 
 #ifdef CONFIG_SMP
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
 #else
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	do { } while(0)
 #endif
 
 #define set_mb(var, value) \

include/asm-parisc/system.h

@@ -51,6 +51,7 @@ extern struct task_struct *_switch_to(struct task_struct *, struct task_struct *
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	do { } while(0)
 #else
 /* This is simply the barrier() macro from linux/kernel.h but when serial.c
  * uses tqueue.h uses smp_mb() defined using barrier(), linux/kernel.h
@@ -59,6 +60,7 @@ extern struct task_struct *_switch_to(struct task_struct *, struct task_struct *
 #define smp_mb()	__asm__ __volatile__("":::"memory");
 #define smp_rmb()	__asm__ __volatile__("":::"memory");
 #define smp_wmb()	__asm__ __volatile__("":::"memory");
+#define smp_read_barrier_depends()	do { } while(0)
 #endif
 
 /* interrupt control */
@@ -120,6 +122,7 @@ static inline void set_eiem(unsigned long val)
 
 #define mb()  __asm__ __volatile__ ("sync" : : :"memory")
 #define wmb() mb()
+#define read_barrier_depends()	do { } while(0)
 #define set_mb(var, value)  do { var = value; mb(); } while (0)
 #define set_wmb(var, value) do { var = value; wmb(); } while (0)
 

include/asm-ppc/system.h

@@ -22,6 +22,8 @@
  * mb() prevents loads and stores being reordered across this point.
  * rmb() prevents loads being reordered across this point.
  * wmb() prevents stores being reordered across this point.
+ * read_barrier_depends() prevents data-dependant loads being reordered
+ *	across this point (nop on PPC).
  *
  * We can use the eieio instruction for wmb, but since it doesn't
  * give any ordering guarantees about loads, we have to use the
@@ -30,6 +32,7 @@
 #define mb()  __asm__ __volatile__ ("sync" : : : "memory")
 #define rmb()  __asm__ __volatile__ ("sync" : : : "memory")
 #define wmb()  __asm__ __volatile__ ("eieio" : : : "memory")
+#define read_barrier_depends()  do { } while(0)
 
 #define set_mb(var, value)	do { var = value; mb(); } while (0)
 #define set_wmb(var, value)	do { var = value; wmb(); } while (0)
@@ -38,10 +41,12 @@
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
 #else
 #define smp_mb()	__asm__ __volatile__("": : :"memory")
 #define smp_rmb()	__asm__ __volatile__("": : :"memory")
 #define smp_wmb()	__asm__ __volatile__("": : :"memory")
+#define smp_read_barrier_depends()	do { } while(0)
 #endif /* CONFIG_SMP */
 
 #ifdef __KERNEL__

include/asm-ppc64/system.h

@@ -25,6 +25,8 @@
  * mb() prevents loads and stores being reordered across this point.
  * rmb() prevents loads being reordered across this point.
  * wmb() prevents stores being reordered across this point.
+ * read_barrier_depends() prevents data-dependant loads being reordered
+ *	across this point (nop on PPC).
  *
  * We can use the eieio instruction for wmb, but since it doesn't
  * give any ordering guarantees about loads, we have to use the
@@ -33,6 +35,7 @@
 #define mb()   __asm__ __volatile__ ("sync" : : : "memory")
 #define rmb()  __asm__ __volatile__ ("lwsync" : : : "memory")
 #define wmb()  __asm__ __volatile__ ("eieio" : : : "memory")
+#define read_barrier_depends()  do { } while(0)
 
 #define set_mb(var, value)	do { var = value; mb(); } while (0)
 #define set_wmb(var, value)	do { var = value; wmb(); } while (0)
@@ -41,10 +44,12 @@
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()  read_barrier_depends()
 #else
 #define smp_mb()	__asm__ __volatile__("": : :"memory")
 #define smp_rmb()	__asm__ __volatile__("": : :"memory")
 #define smp_wmb()	__asm__ __volatile__("": : :"memory")
+#define smp_read_barrier_depends()  do { } while(0)
 #endif /* CONFIG_SMP */
 
 #ifdef CONFIG_DEBUG_KERNEL

include/asm-s390/system.h

@@ -227,9 +227,11 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 #define mb()    eieio()
 #define rmb()   eieio()
 #define wmb()   eieio()
+#define read_barrier_depends() do { } while(0)
 #define smp_mb()       mb()
 #define smp_rmb()      rmb()
 #define smp_wmb()      wmb()
+#define smp_read_barrier_depends()    read_barrier_depends()
 #define smp_mb__before_clear_bit()     smp_mb()
 #define smp_mb__after_clear_bit()      smp_mb()
 

include/asm-s390x/system.h

@@ -238,9 +238,11 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 #define mb()    eieio()
 #define rmb()   eieio()
 #define wmb()   eieio()
+#define read_barrier_depends()	do { } while(0)
 #define smp_mb()       mb()
 #define smp_rmb()      rmb()
 #define smp_wmb()      wmb()
+#define smp_read_barrier_depends()    read_barrier_depends()
 #define smp_mb__before_clear_bit()     smp_mb()
 #define smp_mb__after_clear_bit()      smp_mb()
 

include/asm-sh/system.h

@@ -89,15 +89,18 @@ extern void __xchg_called_with_bad_pointer(void);
 #define mb()	__asm__ __volatile__ ("": : :"memory")
 #define rmb()	mb()
 #define wmb()	__asm__ __volatile__ ("": : :"memory")
+#define read_barrier_depends()	do { } while(0)
 
 #ifdef CONFIG_SMP
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	read_barrier_depends()
 #else
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	do { } while(0)
 #endif
 
 #define set_mb(var, value) do { xchg(&var, value); } while (0)

include/asm-sparc/system.h

@@ -310,11 +310,13 @@ extern void __global_restore_flags(unsigned long flags);
 #define mb()	__asm__ __volatile__ ("" : : : "memory")
 #define rmb()	mb()
 #define wmb()	mb()
+#define read_barrier_depends()	do { } while(0)
 #define set_mb(__var, __value)  do { __var = __value; mb(); } while(0)
 #define set_wmb(__var, __value) set_mb(__var, __value)
 #define smp_mb()	__asm__ __volatile__("":::"memory");
 #define smp_rmb()	__asm__ __volatile__("":::"memory");
 #define smp_wmb()	__asm__ __volatile__("":::"memory");
+#define smp_read_barrier_depends()	do { } while(0)
 
 #define nop() __asm__ __volatile__ ("nop");
 

include/asm-x86_64/system.h

@@ -215,10 +215,12 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
 #define smp_wmb()	wmb()
+#define smp_read_barrier_depends()	do {} while(0)
 #else
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	do {} while(0)
 #endif
 
     
@@ -230,6 +232,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define mb() 	asm volatile("mfence":::"memory")
 #define rmb()	asm volatile("lfence":::"memory")
 #define wmb()	asm volatile("sfence":::"memory")
+#define read_barrier_depends()	do {} while(0)
 #define set_mb(var, value) do { xchg(&var, value); } while (0)
 #define set_wmb(var, value) do { var = value; wmb(); } while (0)
 

include/linux/kernel.h

@@ -200,6 +200,12 @@ struct sysinfo {
 };
 
 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
+#define WARN_ON(condition) do { \
+	if (unlikely((condition)!=0)) { \
+		printk("Badness in %s at %s:%d\n", __FUNCTION__, __FILE__, __LINE__); \
+		dump_stack(); \
+	} \
+} while (0)
 
 extern void BUILD_BUG(void);
 #define BUILD_BUG_ON(condition) do { if (condition) BUILD_BUG(); } while(0)

include/linux/list.h

@@ -4,6 +4,7 @@
 #if defined(__KERNEL__) || defined(_LVM_H_INCLUDE)
 
 #include <linux/prefetch.h>
+#include <asm/system.h>
 
 /*
  * Simple doubly linked list implementation.
@@ -70,6 +71,49 @@ static inline void list_add_tail(struct list_head *new, struct list_head *head)
 	__list_add(new, head->prev, head);
 }
 
+/*
+ * Insert a new entry between two known consecutive entries. 
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static __inline__ void __list_add_rcu(struct list_head * new,
+	struct list_head * prev,
+	struct list_head * next)
+{
+	new->next = next;
+	new->prev = prev;
+	wmb();
+	next->prev = new;
+	prev->next = new;
+}
+
+/**
+ * list_add_rcu - add a new entry to rcu-protected list
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static __inline__ void list_add_rcu(struct list_head *new, struct list_head *head)
+{
+	__list_add_rcu(new, head, head->next);
+}
+
+/**
+ * list_add_tail_rcu - add a new entry to rcu-protected list
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static __inline__ void list_add_tail_rcu(struct list_head *new, struct list_head *head)
+{
+	__list_add_rcu(new, head->prev, head);
+}
+
 /*
  * Delete a list entry by making the prev/next entries
  * point to each other.
@@ -93,6 +137,17 @@ static inline void list_del(struct list_head *entry)
 {
 	__list_del(entry->prev, entry->next);
 }
+/**
+ * list_del_rcu - deletes entry from list without re-initialization
+ * @entry: the element to delete from the list.
+ * Note: list_empty on entry does not return true after this, 
+ * the entry is in an undefined state. It is useful for RCU based
+ * lockfree traversal.
+ */
+static inline void list_del_rcu(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+}
 
 /**
  * list_del_init - deletes entry from list and reinitialize it.
@@ -240,6 +295,30 @@ static inline void list_splice_init(struct list_head *list,
 	     pos = list_entry(pos->member.next, typeof(*pos), member),	\
 		     prefetch(pos->member.next))
 
+/**
+ * list_for_each_rcu	-	iterate over an rcu-protected list
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @head:	the head for your list.
+ */
+#define list_for_each_rcu(pos, head) \
+	for (pos = (head)->next, prefetch(pos->next); pos != (head); \
+        	pos = pos->next, ({ read_barrier_depends(); 0;}), prefetch(pos->next))
+        	
+#define __list_for_each_rcu(pos, head) \
+	for (pos = (head)->next; pos != (head); \
+        	pos = pos->next, ({ read_barrier_depends(); 0;}))
+        	
+/**
+ * list_for_each_safe_rcu	-	iterate over an rcu-protected list safe
+ *					against removal of list entry
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_safe_rcu(pos, n, head) \
+	for (pos = (head)->next, n = pos->next; pos != (head); \
+		pos = n, ({ read_barrier_depends(); 0;}), n = pos->next)
+
 #endif /* __KERNEL__ || _LVM_H_INCLUDE */
 
 #endif