35 files changed, 217 insertions, 136 deletions

diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index b0c7ab93dcb9..7345c338080a 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -211,9 +211,8 @@ Controls the kernel's behaviour when an oops or BUG is encountered.
 
 0: try to continue operation
 
-1: delay a few seconds (to give klogd time to record the oops output) and
-   then panic.  If the `panic' sysctl is also non-zero then the machine will
-   be rebooted.
+1: panic immediatly.  If the `panic' sysctl is also non-zero then the
+   machine will be rebooted.
 
 ==============================================================
 
diff --git a/MAINTAINERS b/MAINTAINERS
index bac3f706f75e..bd82e99a8c21 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2641,6 +2641,14 @@ M:	dbrownell@users.sourceforge.net
 L:      spi-devel-general@lists.sourceforge.net
 S:      Maintained
 
+STABLE BRANCH:
+P:      Greg Kroah-Hartman
+M:      greg@kroah.com
+P:      Chris Wright
+M:      chrisw@sous-sol.org
+L:      stable@kernel.org
+S:      Maintained
+
 TPM DEVICE DRIVER
 P:      Kylene Hall
 M:      kjhall@us.ibm.com
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index 781dbb11c038..b09805f3ee23 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -421,18 +421,22 @@ static struct miscdevice sq_dev = {
 
 static int __init sq_api_init(void)
 {
+        int ret;
         printk(KERN_NOTICE "sq: Registering store queue API.\n");
 
-#ifdef CONFIG_PROC_FS
         create_proc_read_entry("sq_mapping", 0, 0, sq_mapping_read_proc, 0);
-#endif
 
-        return misc_register(&sq_dev);
+        ret = misc_register(&sq_dev);
+        if (ret)
+                remove_proc_entry("sq_mapping", NULL);
+
+        return ret;
 }
 
 static void __exit sq_api_exit(void)
 {
         misc_deregister(&sq_dev);
+        remove_proc_entry("sq_mapping", NULL);
 }
 
 module_init(sq_api_init);
diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index 5a1c0a3bf872..06af6ca60129 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -203,7 +203,7 @@ int __cpuinit init_smp_flush(void)
 {
         int i;
         for_each_cpu_mask(i, cpu_possible_map) {
-                spin_lock_init(&per_cpu(flush_state.tlbstate_lock, i));
+                spin_lock_init(&per_cpu(flush_state, i).tlbstate_lock);
         }
         return 0;
 }
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 81e970adeab3..b0d4b147b19e 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -129,11 +129,15 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
         struct acpi_memory_info *info, *n;
 
 
+        if (!list_empty(&mem_device->res_list))
+                return 0;
+
         status = acpi_walk_resources(mem_device->device->handle, METHOD_NAME__CRS,
                                      acpi_memory_get_resource, mem_device);
         if (ACPI_FAILURE(status)) {
                 list_for_each_entry_safe(info, n, &mem_device->res_list, list)
                         kfree(info);
+                INIT_LIST_HEAD(&mem_device->res_list);
                 return -EINVAL;
         }
 
@@ -230,17 +234,10 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
          * (i.e. memory-hot-remove function)
          */
         list_for_each_entry(info, &mem_device->res_list, list) {
-                u64 start_pfn, end_pfn;
-
-                start_pfn = info->start_addr >> PAGE_SHIFT;
-                end_pfn = (info->start_addr + info->length - 1) >> PAGE_SHIFT;
-
-                if (pfn_valid(start_pfn) || pfn_valid(end_pfn)) {
-                        /* already enabled. try next area */
+                if (info->enabled) { /* just sanity check...*/
                         num_enabled++;
                         continue;
                 }
-
                 result = add_memory(node, info->start_addr, info->length);
                 if (result)
                         continue;
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index 41db8060e8f7..017f755632a3 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -311,7 +311,8 @@ static void hvsi_recv_control(struct hvsi_struct *hp, uint8_t *packet,
                                 /* CD went away; no more connection */
                                 pr_debug("hvsi%i: CD dropped\n", hp->index);
                                 hp->mctrl &= TIOCM_CD;
-                                if (!(hp->tty->flags & CLOCAL))
+                                /* If userland hasn't done an open(2) yet, hp->tty is NULL. */
+                                if (hp->tty && !(hp->tty->flags & CLOCAL))
                                         *to_hangup = hp->tty;
                         }
                         break;
@@ -986,10 +987,7 @@ static void hvsi_write_worker(void *arg)
                 start_j = 0;
 #endif /* DEBUG */
                 wake_up_all(&hp->emptyq);
-                if (test_bit(TTY_DO_WRITE_WAKEUP, &hp->tty->flags)
-                                && hp->tty->ldisc.write_wakeup)
-                        hp->tty->ldisc.write_wakeup(hp->tty);
-                wake_up_interruptible(&hp->tty->write_wait);
+                tty_wakeup(hp->tty);
         }
 
 out:
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 819516b35a79..a01d796d1eeb 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -25,12 +25,12 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/random.h>
+#include <linux/clk.h>
 #include <linux/err.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/hw_random.h>
 
 #include <asm/io.h>
-#include <asm/hardware/clock.h>
 
 #define RNG_OUT_REG             0x00            /* Output register */
 #define RNG_STAT_REG            0x04            /* Status register
@@ -52,7 +52,7 @@
 
 static void __iomem *rng_base;
 static struct clk *rng_ick;
-static struct device *rng_dev;
+static struct platform_device *rng_dev;
 
 static u32 omap_rng_read_reg(int reg)
 {
@@ -83,9 +83,8 @@ static struct hwrng omap_rng_ops = {
         .data_read      = omap_rng_data_read,
 };
 
-static int __init omap_rng_probe(struct device *dev)
+static int __init omap_rng_probe(struct platform_device *pdev)
 {
-        struct platform_device *pdev = to_platform_device(dev);
         struct resource *res, *mem;
         int ret;
 
@@ -95,16 +94,14 @@ static int __init omap_rng_probe(struct device *dev)
          */
         BUG_ON(rng_dev);
 
-        if (cpu_is_omap24xx()) {
+        if (cpu_is_omap24xx()) {
                 rng_ick = clk_get(NULL, "rng_ick");
                 if (IS_ERR(rng_ick)) {
-                        dev_err(dev, "Could not get rng_ick\n");
+                        dev_err(&pdev->dev, "Could not get rng_ick\n");
                         ret = PTR_ERR(rng_ick);
                         return ret;
-                }
-                else {
-                        clk_use(rng_ick);
-                }
+                } else
+                        clk_enable(rng_ick);
         }
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -117,7 +114,7 @@ static int __init omap_rng_probe(struct device *dev)
         if (mem == NULL)
                 return -EBUSY;
 
-        dev_set_drvdata(dev, mem);
+        dev_set_drvdata(&pdev->dev, mem);
         rng_base = (u32 __iomem *)io_p2v(res->start);
 
         ret = hwrng_register(&omap_rng_ops);
@@ -127,25 +124,25 @@ static int __init omap_rng_probe(struct device *dev)
                 return ret;
         }
 
-        dev_info(dev, "OMAP Random Number Generator ver. %02x\n",
+        dev_info(&pdev->dev, "OMAP Random Number Generator ver. %02x\n",
                 omap_rng_read_reg(RNG_REV_REG));
         omap_rng_write_reg(RNG_MASK_REG, 0x1);
 
-        rng_dev = dev;
+        rng_dev = pdev;
 
         return 0;
 }
 
-static int __exit omap_rng_remove(struct device *dev)
+static int __exit omap_rng_remove(struct platform_device *pdev)
 {
-        struct resource *mem = dev_get_drvdata(dev);
+        struct resource *mem = dev_get_drvdata(&pdev->dev);
 
         hwrng_unregister(&omap_rng_ops);
 
         omap_rng_write_reg(RNG_MASK_REG, 0x0);
 
         if (cpu_is_omap24xx()) {
-                clk_unuse(rng_ick);
+                clk_disable(rng_ick);
                 clk_put(rng_ick);
         }
 
@@ -157,18 +154,16 @@ static int __exit omap_rng_remove(struct device *dev)
 
 #ifdef CONFIG_PM
 
-static int omap_rng_suspend(struct device *dev, pm_message_t message, u32 level)
+static int omap_rng_suspend(struct platform_device *pdev, pm_message_t message)
 {
         omap_rng_write_reg(RNG_MASK_REG, 0x0);
-
         return 0;
 }
 
-static int omap_rng_resume(struct device *dev, pm_message_t message, u32 level)
+static int omap_rng_resume(struct platform_device *pdev)
 {
         omap_rng_write_reg(RNG_MASK_REG, 0x1);
-
-        return 1;
+        return 0;
 }
 
 #else
@@ -179,9 +174,11 @@ static int omap_rng_resume(struct device *dev, pm_message_t message, u32 level)
 #endif
 
 
-static struct device_driver omap_rng_driver = {
-        .name           = "omap_rng",
-        .bus            = &platform_bus_type,
+static struct platform_driver omap_rng_driver = {
+        .driver = {
+                .name           = "omap_rng",
+                .owner          = THIS_MODULE,
+        },
         .probe          = omap_rng_probe,
         .remove         = __exit_p(omap_rng_remove),
         .suspend        = omap_rng_suspend,
@@ -193,12 +190,12 @@ static int __init omap_rng_init(void)
         if (!cpu_is_omap16xx() && !cpu_is_omap24xx())
                 return -ENODEV;
 
-        return driver_register(&omap_rng_driver);
+        return platform_driver_register(&omap_rng_driver);
 }
 
 static void __exit omap_rng_exit(void)
 {
-        driver_unregister(&omap_rng_driver);
+        platform_driver_unregister(&omap_rng_driver);
 }
 
 module_init(omap_rng_init);
diff --git a/drivers/edac/edac_mc.h b/drivers/edac/edac_mc.h
index bf6ab8a8d5ed..a1cfd4e3c97d 100644
--- a/drivers/edac/edac_mc.h
+++ b/drivers/edac/edac_mc.h
@@ -29,6 +29,7 @@
 #include <linux/rcupdate.h>
 #include <linux/completion.h>
 #include <linux/kobject.h>
+#include <linux/platform_device.h>
 
 #define EDAC_MC_LABEL_LEN       31
 #define MC_PROC_NAME_MAX_LEN 7
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index ced309ff056f..eae9e81be375 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -232,7 +232,7 @@ static void scx200_acb_poll(struct scx200_acb_iface *iface)
         unsigned long timeout;
 
         timeout = jiffies + POLL_TIMEOUT;
-        while (time_before(jiffies, timeout)) {
+        while (1) {
                 status = inb(ACBST);
 
                 /* Reset the status register to avoid the hang */
@@ -242,7 +242,10 @@ static void scx200_acb_poll(struct scx200_acb_iface *iface)
                         scx200_acb_machine(iface, status);
                         return;
                 }
-                yield();
+                if (time_after(jiffies, timeout))
+                        break;
+                cpu_relax();
+                cond_resched();
         }
 
         dev_err(&iface->adapter.dev, "timeout in state %s\n",
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index aaa74f293aaf..b08755e2e68f 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -2515,6 +2515,9 @@ static int sbp2scsi_slave_configure(struct scsi_device *sdev)
                 sdev->skip_ms_page_8 = 1;
         if (scsi_id->workarounds & SBP2_WORKAROUND_FIX_CAPACITY)
                 sdev->fix_capacity = 1;
+        if (scsi_id->ne->guid_vendor_id == 0x0010b9 && /* Maxtor's OUI */
+            (sdev->type == TYPE_DISK || sdev->type == TYPE_RBC))
+                sdev->allow_restart = 1;
         return 0;
 }
 
diff --git a/drivers/isdn/hardware/eicon/divasync.h b/drivers/isdn/hardware/eicon/divasync.h
index 0a5be7f969f2..af3eb9e795b5 100644
--- a/drivers/isdn/hardware/eicon/divasync.h
+++ b/drivers/isdn/hardware/eicon/divasync.h
@@ -256,7 +256,6 @@ typedef struct
 #define NO_ORDER_CHECK_MASK 0x00000010
 #define LOW_CHANNEL_MASK 0x00000020
 #define NO_HSCX30_MASK  0x00000040
-#define MODE_MASK   0x00000080
 #define SET_BOARD   0x00001000
 #define SET_CRC4   0x00030000
 #define SET_L1_TRISTATE  0x00040000
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index ff83c9b5979e..b99c19c7eb22 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -162,7 +162,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
                 goto out;
         }
 
-        min_spacing = mddev->array_size;
+        min_spacing = conf->array_size;
         sector_div(min_spacing, PAGE_SIZE/sizeof(struct dev_info *));
 
         /* min_spacing is the minimum spacing that will fit the hash
@@ -171,7 +171,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
          * that is larger than min_spacing as use the size of that as
          * the actual spacing
          */
-        conf->hash_spacing = mddev->array_size;
+        conf->hash_spacing = conf->array_size;
         for (i=0; i < cnt-1 ; i++) {
                 sector_t sz = 0;
                 int j;
@@ -228,7 +228,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
         curr_offset = 0;
         i = 0;
         for (curr_offset = 0;
-             curr_offset < mddev->array_size;
+             curr_offset < conf->array_size;
              curr_offset += conf->hash_spacing) {
 
                 while (i < mddev->raid_disks-1 &&
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 212268881857..dc79b0a0059f 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -173,6 +173,9 @@ pnpacpi_parse_allocated_address_space(struct pnp_resource_table *res_table,
                 return;
         }
 
+        if (p->producer_consumer == ACPI_PRODUCER)
+                return;
+
         if (p->resource_type == ACPI_MEMORY_RANGE)
                 pnpacpi_parse_allocated_memresource(res_table,
                                 p->minimum, p->address_length);
@@ -252,9 +255,14 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
                 break;
 
         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
+                if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
+                        return AE_OK;
                 break;
 
         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
+                if (res->data.extended_irq.producer_consumer == ACPI_PRODUCER)
+                        return AE_OK;
+
                 for (i = 0; i < res->data.extended_irq.interrupt_count; i++) {
                         pnpacpi_parse_allocated_irqresource(res_table,
                                 res->data.extended_irq.interrupts[i],
diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index 8b08121b390b..3e827e04a2aa 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -1913,9 +1913,6 @@ static int __devinit aty128_init(struct pci_dev *pdev, const struct pci_device_i
         u8 chip_rev;
         u32 dac;
 
-        if (!par->vram_size)    /* may have already been probed */
-                par->vram_size = aty_ld_le32(CONFIG_MEMSIZE) & 0x03FFFFFF;
-
         /* Get the chip revision */
         chip_rev = (aty_ld_le32(CONFIG_CNTL) >> 16) & 0x1F;
 
@@ -2028,9 +2025,6 @@ static int __devinit aty128_init(struct pci_dev *pdev, const struct pci_device_i
 
         aty128_init_engine(par);
 
-        if (register_framebuffer(info) < 0)
-                return 0;
-
         par->pm_reg = pci_find_capability(pdev, PCI_CAP_ID_PM);
         par->pdev = pdev;
         par->asleep = 0;
@@ -2040,6 +2034,9 @@ static int __devinit aty128_init(struct pci_dev *pdev, const struct pci_device_i
         aty128_bl_init(par);
 #endif
 
+        if (register_framebuffer(info) < 0)
+                return 0;
+
         printk(KERN_INFO "fb%d: %s frame buffer device on %s\n",
                info->node, info->fix.id, video_card);
 
@@ -2089,7 +2086,6 @@ static int __devinit aty128_probe(struct pci_dev *pdev, const struct pci_device_
         par = info->par;
 
         info->pseudo_palette = par->pseudo_palette;
-        info->fix = aty128fb_fix;
 
         /* Virtualize mmio region */
         info->fix.mmio_start = reg_addr;
diff --git a/drivers/video/au1100fb.c b/drivers/video/au1100fb.c
index a92a91fef16f..f25d5d648333 100644
--- a/drivers/video/au1100fb.c
+++ b/drivers/video/au1100fb.c
@@ -156,7 +156,7 @@ int au1100fb_setmode(struct au1100fb_device *fbdev)
 
                         info->fix.visual = FB_VISUAL_TRUECOLOR;
                         info->fix.line_length = info->var.xres_virtual << 1; /* depth=16 */
-        }
+                }
         } else {
                 /* mono */
                 info->fix.visual = FB_VISUAL_MONO10;
@@ -164,20 +164,16 @@ int au1100fb_setmode(struct au1100fb_device *fbdev)
         }
 
         info->screen_size = info->fix.line_length * info->var.yres_virtual;
+        info->var.rotate = ((fbdev->panel->control_base&LCD_CONTROL_SM_MASK) \
+                                >> LCD_CONTROL_SM_BIT) * 90;
 
         /* Determine BPP mode and format */
-        fbdev->regs->lcd_control = fbdev->panel->control_base |
-                            ((info->var.rotate/90) << LCD_CONTROL_SM_BIT);
-
-        fbdev->regs->lcd_intenable = 0;
-        fbdev->regs->lcd_intstatus = 0;
-
+        fbdev->regs->lcd_control = fbdev->panel->control_base;
         fbdev->regs->lcd_horztiming = fbdev->panel->horztiming;
-
         fbdev->regs->lcd_verttiming = fbdev->panel->verttiming;
-
         fbdev->regs->lcd_clkcontrol = fbdev->panel->clkcontrol_base;
-
+        fbdev->regs->lcd_intenable = 0;
+        fbdev->regs->lcd_intstatus = 0;
         fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(fbdev->fb_phys);
 
         if (panel_is_dual(fbdev->panel)) {
@@ -206,6 +202,8 @@ int au1100fb_setmode(struct au1100fb_device *fbdev)
 
         /* Resume controller */
         fbdev->regs->lcd_control |= LCD_CONTROL_GO;
+        mdelay(10);
+        au1100fb_fb_blank(VESA_NO_BLANKING, info);
 
         return 0;
 }
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index fcaeead9696b..50cfca5c7efd 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -512,7 +512,11 @@ befs_utf2nls(struct super_block *sb, const char *in,
         wchar_t uni;
         int unilen, utflen;
         char *result;
-        int maxlen = in_len; /* The utf8->nls conversion can't make more chars */
+        /* The utf8->nls conversion won't make the final nls string bigger
+         * than the utf one, but if the string is pure ascii they'll have the
+         * same width and an extra char is needed to save the additional \0
+         */
+        int maxlen = in_len + 1;
 
         befs_debug(sb, "---> utf2nls()");
 
@@ -588,7 +592,10 @@ befs_nls2utf(struct super_block *sb, const char *in,
         wchar_t uni;
         int unilen, utflen;
         char *result;
-        int maxlen = 3 * in_len;
+        /* There're nls characters that will translate to 3-chars-wide UTF-8
+         * characters, a additional byte is needed to save the final \0
+         * in special cases */
+        int maxlen = (3 * in_len) + 1;
 
         befs_debug(sb, "---> nls2utf()\n");
 
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index f318b58510fd..1627edd50810 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -48,8 +48,8 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
                 return 0;
         }
 
-        reiserfs_write_lock(inode->i_sb);
         mutex_lock(&inode->i_mutex);
+        reiserfs_write_lock(inode->i_sb);
         /* freeing preallocation only involves relogging blocks that
          * are already in the current transaction.  preallocation gets
          * freed at the end of each transaction, so it is impossible for
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 12dfdcfbee3d..52f1e2136546 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -39,14 +39,10 @@ void reiserfs_delete_inode(struct inode *inode)
 
         /* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
         if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) {  /* also handles bad_inode case */
-                mutex_lock(&inode->i_mutex);
-
                 reiserfs_delete_xattrs(inode);
 
-                if (journal_begin(&th, inode->i_sb, jbegin_count)) {
-                        mutex_unlock(&inode->i_mutex);
+                if (journal_begin(&th, inode->i_sb, jbegin_count))
                         goto out;
-                }
                 reiserfs_update_inode_transaction(inode);
 
                 err = reiserfs_delete_object(&th, inode);
@@ -57,12 +53,8 @@ void reiserfs_delete_inode(struct inode *inode)
                 if (!err) 
                         DQUOT_FREE_INODE(inode);
 
-                if (journal_end(&th, inode->i_sb, jbegin_count)) {
-                        mutex_unlock(&inode->i_mutex);
+                if (journal_end(&th, inode->i_sb, jbegin_count))
                         goto out;
-                }
-
-                mutex_unlock(&inode->i_mutex);
 
                 /* check return value from reiserfs_delete_object after
                  * ending the transaction
@@ -2348,6 +2340,7 @@ static int reiserfs_write_full_page(struct page *page,
         unsigned long end_index = inode->i_size >> PAGE_CACHE_SHIFT;
         int error = 0;
         unsigned long block;
+        sector_t last_block;
         struct buffer_head *head, *bh;
         int partial = 0;
         int nr = 0;
@@ -2395,10 +2388,19 @@ static int reiserfs_write_full_page(struct page *page,
         }
         bh = head;
         block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits);
+        last_block = (i_size_read(inode) - 1) >> inode->i_blkbits;
         /* first map all the buffers, logging any direct items we find */
         do {
-                if ((checked || buffer_dirty(bh)) && (!buffer_mapped(bh) ||
-                                                      (buffer_mapped(bh)
+                if (block > last_block) {
+                        /*
+                         * This can happen when the block size is less than
+                         * the page size.  The corresponding bytes in the page
+                         * were zero filled above
+                         */
+                        clear_buffer_dirty(bh);
+                        set_buffer_uptodate(bh);
+                } else if ((checked || buffer_dirty(bh)) &&
+                           (!buffer_mapped(bh) || (buffer_mapped(bh)
                                                        && bh->b_blocknr ==
                                                        0))) {
                         /* not mapped yet, or it points to a direct item, search
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 745c88100895..a986b5e1e288 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -116,12 +116,12 @@ static int reiserfs_unpack(struct inode *inode, struct file *filp)
         if (REISERFS_I(inode)->i_flags & i_nopack_mask) {
                 return 0;
         }
-        reiserfs_write_lock(inode->i_sb);
 
         /* we need to make sure nobody is changing the file size beneath
          ** us
          */
         mutex_lock(&inode->i_mutex);
+        reiserfs_write_lock(inode->i_sb);
 
         write_from = inode->i_size & (blocksize - 1);
         /* if we are on a block boundary, we are already unpacked.  */
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index 3873c672cb4c..33323473e3c4 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -75,6 +75,12 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
         }
         *err = -ENOSPC;
 
+        UDF_I_UNIQUE(inode) = 0;
+        UDF_I_LENEXTENTS(inode) = 0;
+        UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
+        UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
+        UDF_I_STRAT4096(inode) = 0;
+
         block = udf_new_block(dir->i_sb, NULL, UDF_I_LOCATION(dir).partitionReferenceNum,
                 start, err);
         if (*err)
@@ -84,11 +90,6 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
         }
 
         mutex_lock(&sbi->s_alloc_mutex);
-        UDF_I_UNIQUE(inode) = 0;
-        UDF_I_LENEXTENTS(inode) = 0;
-        UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
-        UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
-        UDF_I_STRAT4096(inode) = 0;
         if (UDF_SB_LVIDBH(sb))
         {
                 struct logicalVolHeaderDesc *lvhd;
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index b01804baa120..b82381475779 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -248,7 +248,7 @@ static void ufs_change_blocknr(struct inode *inode, unsigned int baseblk,
 
                 if (likely(cur_index != index)) {
                         page = ufs_get_locked_page(mapping, index);
-                        if (IS_ERR(page))
+                        if (!page || IS_ERR(page)) /* it was truncated or EIO */
                                 continue;
                 } else
                         page = locked_page;
diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index 337cf2c46d10..22f820a9b15c 100644
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -251,12 +251,12 @@ struct page *ufs_get_locked_page(struct address_space *mapping,
 {
         struct page *page;
 
-try_again:
         page = find_lock_page(mapping, index);
         if (!page) {
                 page = read_cache_page(mapping, index,
                                        (filler_t*)mapping->a_ops->readpage,
                                        NULL);
+
                 if (IS_ERR(page)) {
                         printk(KERN_ERR "ufs_change_blocknr: "
                                "read_cache_page error: ino %lu, index: %lu\n",
@@ -266,6 +266,14 @@ try_again:
 
                 lock_page(page);
 
+                if (unlikely(page->mapping == NULL)) {
+                        /* Truncate got there first */
+                        unlock_page(page);
+                        page_cache_release(page);
+                        page = NULL;
+                        goto out;
+                }
+
                 if (!PageUptodate(page) || PageError(page)) {
                         unlock_page(page);
                         page_cache_release(page);
@@ -275,15 +283,8 @@ try_again:
                                mapping->host->i_ino, index);
 
                         page = ERR_PTR(-EIO);
-                        goto out;
                 }
         }
-
-        if (unlikely(!page->mapping || !page_has_buffers(page))) {
-                unlock_page(page);
-                page_cache_release(page);
-                goto try_again;/*we really need these buffers*/
-        }
 out:
         return page;
 }
diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h
index 6a7047851e48..88dafa246d87 100644
--- a/include/linux/debug_locks.h
+++ b/include/linux/debug_locks.h
@@ -1,6 +1,8 @@
 #ifndef __LINUX_DEBUG_LOCKING_H
 #define __LINUX_DEBUG_LOCKING_H
 
+struct task_struct;
+
 extern int debug_locks;
 extern int debug_locks_silent;
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6afa72e080cb..6674fc1e51bf 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1558,6 +1558,14 @@ static inline void freeze(struct task_struct *p)
 }
 
 /*
+ * Sometimes we may need to cancel the previous 'freeze' request
+ */
+static inline void do_not_freeze(struct task_struct *p)
+{
+        p->flags &= ~PF_FREEZE;
+}
+
+/*
  * Wake up a frozen process
  */
 static inline int thaw_process(struct task_struct *p)
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 1ab806c47514..2d9b1b60798a 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -41,23 +41,23 @@ DECLARE_PER_CPU(struct vm_event_state, vm_event_states);
 
 static inline void __count_vm_event(enum vm_event_item item)
 {
-        __get_cpu_var(vm_event_states.event[item])++;
+        __get_cpu_var(vm_event_states).event[item]++;
 }
 
 static inline void count_vm_event(enum vm_event_item item)
 {
-        get_cpu_var(vm_event_states.event[item])++;
+        get_cpu_var(vm_event_states).event[item]++;
         put_cpu();
 }
 
 static inline void __count_vm_events(enum vm_event_item item, long delta)
 {
-        __get_cpu_var(vm_event_states.event[item]) += delta;
+        __get_cpu_var(vm_event_states).event[item] += delta;
 }
 
 static inline void count_vm_events(enum vm_event_item item, long delta)
 {
-        get_cpu_var(vm_event_states.event[item]) += delta;
+        get_cpu_var(vm_event_states).event[item] += delta;
         put_cpu();
 }
 
diff --git a/kernel/fork.c b/kernel/fork.c
index 1b0f7b1e0881..aa36c43783cc 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1387,8 +1387,10 @@ long do_fork(unsigned long clone_flags,
 
                 if (clone_flags & CLONE_VFORK) {
                         wait_for_completion(&vfork);
-                        if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE))
+                        if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE)) {
+                                current->ptrace_message = nr;
                                 ptrace_notify ((PTRACE_EVENT_VFORK_DONE << 8) | SIGTRAP);
+                        }
                 }
         } else {
                 free_pid(pid);
diff --git a/kernel/futex.c b/kernel/futex.c
index dda2049692a2..c2b2e0b83abf 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -948,6 +948,7 @@ static int unqueue_me(struct futex_q *q)
         /* In the common case we don't take the spinlock, which is nice. */
  retry:
         lock_ptr = q->lock_ptr;
+        barrier();
         if (lock_ptr != 0) {
                 spin_lock(lock_ptr);
                 /*
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index d1aab1a452cc..c5cca3f65cb7 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -39,7 +39,7 @@ void compat_exit_robust_list(struct task_struct *curr)
 {
         struct compat_robust_list_head __user *head = curr->compat_robust_list;
         struct robust_list __user *entry, *pending;
-        unsigned int limit = ROBUST_LIST_LIMIT, pi;
+        unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
         compat_uptr_t uentry, upending;
         compat_long_t futex_offset;
 
@@ -59,10 +59,10 @@ void compat_exit_robust_list(struct task_struct *curr)
          * if it exists:
          */
         if (fetch_robust_entry(&upending, &pending,
-                               &head->list_op_pending, &pi))
+                               &head->list_op_pending, &pip))
                 return;
         if (upending)
-                handle_futex_death((void *)pending + futex_offset, curr, pi);
+                handle_futex_death((void *)pending + futex_offset, curr, pip);
 
         while (compat_ptr(uentry) != &head->list) {
                 /*
diff --git a/kernel/power/process.c b/kernel/power/process.c
index b2a5f671d6cd..72e72d2c61e6 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -66,13 +66,25 @@ static inline void freeze_process(struct task_struct *p)
         }
 }
 
+static void cancel_freezing(struct task_struct *p)
+{
+        unsigned long flags;
+
+        if (freezing(p)) {
+                pr_debug("  clean up: %s\n", p->comm);
+                do_not_freeze(p);
+                spin_lock_irqsave(&p->sighand->siglock, flags);
+                recalc_sigpending_tsk(p);
+                spin_unlock_irqrestore(&p->sighand->siglock, flags);
+        }
+}
+
 /* 0 = success, else # of processes that we failed to stop */
 int freeze_processes(void)
 {
         int todo, nr_user, user_frozen;
         unsigned long start_time;
         struct task_struct *g, *p;
-        unsigned long flags;
 
         printk( "Stopping tasks: " );
         start_time = jiffies;
@@ -85,6 +97,10 @@ int freeze_processes(void)
                                 continue;
                         if (frozen(p))
                                 continue;
+                        if (p->state == TASK_TRACED && frozen(p->parent)) {
+                                cancel_freezing(p);
+                                continue;
+                        }
                         if (p->mm && !(p->flags & PF_BORROWED_MM)) {
                                 /* The task is a user-space one.
                                  * Freeze it unless there's a vfork completion
@@ -126,13 +142,7 @@ int freeze_processes(void)
                 do_each_thread(g, p) {
                         if (freezeable(p) && !frozen(p))
                                 printk(KERN_ERR "  %s\n", p->comm);
-                        if (freezing(p)) {
-                                pr_debug("  clean up: %s\n", p->comm);
-                                p->flags &= ~PF_FREEZE;
-                                spin_lock_irqsave(&p->sighand->siglock, flags);
-                                recalc_sigpending_tsk(p);
-                                spin_unlock_irqrestore(&p->sighand->siglock, flags);
-                        }
+                        cancel_freezing(p);
                 } while_each_thread(g, p);
                 read_unlock(&tasklist_lock);
                 return todo;
diff --git a/kernel/printk.c b/kernel/printk.c
index 65ca0688f86f..1149365e989e 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -799,6 +799,9 @@ void release_console_sem(void)
                 up(&secondary_console_sem);
                 return;
         }
+
+        console_may_schedule = 0;
+
         for ( ; ; ) {
                 spin_lock_irqsave(&logbuf_lock, flags);
                 wake_klogd |= log_start - log_end;
@@ -812,7 +815,6 @@ void release_console_sem(void)
                 local_irq_restore(flags);
         }
         console_locked = 0;
-        console_may_schedule = 0;
         up(&console_sem);
         spin_unlock_irqrestore(&logbuf_lock, flags);
         if (wake_klogd && !oops_in_progress && waitqueue_active(&log_wait)) {
diff --git a/kernel/resource.c b/kernel/resource.c
index 0dd3a857579e..46286434af80 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -244,6 +244,7 @@ int find_next_system_ram(struct resource *res)
 
         start = res->start;
         end = res->end;
+        BUG_ON(start >= end);
 
         read_lock(&resource_lock);
         for (p = iomem_resource.child; p ; p = p->sibling) {
@@ -254,15 +255,17 @@ int find_next_system_ram(struct resource *res)
                         p = NULL;
                         break;
                 }
-                if (p->start >= start)
+                if ((p->end >= start) && (p->start < end))
                         break;
         }
         read_unlock(&resource_lock);
         if (!p)
                 return -1;
         /* copy data */
-        res->start = p->start;
-        res->end = p->end;
+        if (res->start < p->start)
+                res->start = p->start;
+        if (res->end > p->end)
+                res->end = p->end;
         return 0;
 }
 #endif
diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c
index 3d9c4dc965ed..58c577dd82e5 100644
--- a/lib/spinlock_debug.c
+++ b/lib/spinlock_debug.c
@@ -162,6 +162,7 @@ static void rwlock_bug(rwlock_t *lock, const char *msg)
 
 #define RWLOCK_BUG_ON(cond, lock, msg) if (unlikely(cond)) rwlock_bug(lock, msg)
 
+#if 0           /* __write_lock_debug() can lock up - maybe this can too? */
 static void __read_lock_debug(rwlock_t *lock)
 {
         int print_once = 1;
@@ -184,12 +185,12 @@ static void __read_lock_debug(rwlock_t *lock)
                 }
         }
 }
+#endif
 
 void _raw_read_lock(rwlock_t *lock)
 {
         RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");
-        if (unlikely(!__raw_read_trylock(&lock->raw_lock)))
-                __read_lock_debug(lock);
+        __raw_read_lock(&lock->raw_lock);
 }
 
 int _raw_read_trylock(rwlock_t *lock)
@@ -235,6 +236,7 @@ static inline void debug_write_unlock(rwlock_t *lock)
         lock->owner_cpu = -1;
 }
 
+#if 0           /* This can cause lockups */
 static void __write_lock_debug(rwlock_t *lock)
 {
         int print_once = 1;
@@ -257,12 +259,12 @@ static void __write_lock_debug(rwlock_t *lock)
                 }
         }
 }
+#endif
 
 void _raw_write_lock(rwlock_t *lock)
 {
         debug_write_lock_before(lock);
-        if (unlikely(!__raw_write_trylock(&lock->raw_lock)))
-                __write_lock_debug(lock);
+        __raw_write_lock(&lock->raw_lock);
         debug_write_lock_after(lock);
 }
 
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 60a5d55e51d9..168c78a121bb 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -73,7 +73,6 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
                 file->f_ra.ra_pages = bdi->ra_pages * 2;
                 break;
         case POSIX_FADV_WILLNEED:
-        case POSIX_FADV_NOREUSE:
                 if (!mapping->a_ops->readpage) {
                         ret = -EINVAL;
                         break;
@@ -94,6 +93,8 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
                 if (ret > 0)
                         ret = 0;
                 break;
+        case POSIX_FADV_NOREUSE:
+                break;
         case POSIX_FADV_DONTNEED:
                 if (!bdi_write_congested(mapping->backing_dev_info))
                         filemap_flush(mapping);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 01c9fb97c619..c37319542b70 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -52,6 +52,9 @@ static int __add_section(struct zone *zone, unsigned long phys_start_pfn)
         int nr_pages = PAGES_PER_SECTION;
         int ret;
 
+        if (pfn_valid(phys_start_pfn))
+                return -EEXIST;
+
         ret = sparse_add_one_section(zone, phys_start_pfn, nr_pages);
 
         if (ret < 0)
@@ -76,15 +79,22 @@ int __add_pages(struct zone *zone, unsigned long phys_start_pfn,
 {
         unsigned long i;
         int err = 0;
+        int start_sec, end_sec;
+        /* during initialize mem_map, align hot-added range to section */
+        start_sec = pfn_to_section_nr(phys_start_pfn);
+        end_sec = pfn_to_section_nr(phys_start_pfn + nr_pages - 1);
 
-        for (i = 0; i < nr_pages; i += PAGES_PER_SECTION) {
-                err = __add_section(zone, phys_start_pfn + i);
+        for (i = start_sec; i <= end_sec; i++) {
+                err = __add_section(zone, i << PFN_SECTION_SHIFT);
 
-                /* We want to keep adding the rest of the
-                 * sections if the first ones already exist
+                /*
+                 * EEXIST is finally dealed with by ioresource collision
+                 * check. see add_memory() => register_memory_resource()
+                 * Warning will be printed if there is collision.
                  */
                 if (err && (err != -EEXIST))
                         break;
+                err = 0;
         }
 
         return err;
@@ -156,7 +166,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
         res.flags = IORESOURCE_MEM; /* we just need system ram */
         section_end = res.end;
 
-        while (find_next_system_ram(&res) >= 0) {
+        while ((res.start < res.end) && (find_next_system_ram(&res) >= 0)) {
                 start_pfn = (unsigned long)(res.start >> PAGE_SHIFT);
                 nr_pages = (unsigned long)
                            ((res.end + 1 - res.start) >> PAGE_SHIFT);
@@ -213,10 +223,9 @@ static void rollback_node_hotadd(int nid, pg_data_t *pgdat)
 }
 
 /* add this memory to iomem resource */
-static void register_memory_resource(u64 start, u64 size)
+static struct resource *register_memory_resource(u64 start, u64 size)
 {
         struct resource *res;
-
         res = kzalloc(sizeof(struct resource), GFP_KERNEL);
         BUG_ON(!res);
 
@@ -228,7 +237,18 @@ static void register_memory_resource(u64 start, u64 size)
                 printk("System RAM resource %llx - %llx cannot be added\n",
                 (unsigned long long)res->start, (unsigned long long)res->end);
                 kfree(res);
+                res = NULL;
         }
+        return res;
+}
+
+static void release_memory_resource(struct resource *res)
+{
+        if (!res)
+                return;
+        release_resource(res);
+        kfree(res);
+        return;
 }
 
 
@@ -237,8 +257,13 @@ int add_memory(int nid, u64 start, u64 size)
 {
         pg_data_t *pgdat = NULL;
         int new_pgdat = 0;
+        struct resource *res;
         int ret;
 
+        res = register_memory_resource(start, size);
+        if (!res)
+                return -EEXIST;
+
         if (!node_online(nid)) {
                 pgdat = hotadd_new_pgdat(nid, start);
                 if (!pgdat)
@@ -268,14 +293,13 @@ int add_memory(int nid, u64 start, u64 size)
                 BUG_ON(ret);
         }
 
-        /* register this memory as resource */
-        register_memory_resource(start, size);
-
         return ret;
 error:
         /* rollback pgdat allocation and others */
         if (new_pgdat)
                 rollback_node_hotadd(nid, pgdat);
+        if (res)
+                release_memory_resource(res);
 
         return ret;
 }
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 7026b0866b7b..00cb388ece03 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -71,7 +71,12 @@ struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
         new = detail->alloc();
         if (!new)
                 return NULL;
+        /* must fully initialise 'new', else
+         * we might get lose if we need to
+         * cache_put it soon.
+         */
         cache_init(new);
+        detail->init(new, key);
 
         write_lock(&detail->hash_lock);
 
@@ -85,7 +90,6 @@ struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
                         return tmp;
                 }
         }
-        detail->init(new, key);
         new->next = *head;
         *head = new;
         detail->entries++;