Merge bk://kernel.bkbits.net/davem/sparc-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

arch/mips/lib-32/dump_tlb.c

@@ -32,6 +32,8 @@ static inline const char *msk2str(unsigned int mask)
 	case PM_256M:	return "256Mb";
 #endif
 	}
+
+	return "unknown";
 }
 
 #define BARRIER()					\

arch/mips/lib-64/dump_tlb.c

@@ -32,6 +32,8 @@ static inline const char *msk2str(unsigned int mask)
 	case PM_256M:	return "256Mb";
 #endif
 	}
+
+	return "unknown";
 }
 
 #define BARRIER()					\

arch/um/kernel/skas/Makefile

@@ -11,3 +11,5 @@ USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
 
 $(USER_OBJS) : %.o: %.c
 	$(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $<
+
+subdir- := util

drivers/char/agp/intel-agp.c

@@ -1748,12 +1748,16 @@ static int agp_intel_resume(struct pci_dev *pdev)
 
 	if (bridge->driver == &intel_generic_driver)
 		intel_configure();
+	else if (bridge->driver == &intel_850_driver)
+		intel_850_configure();
 	else if (bridge->driver == &intel_845_driver)
 		intel_845_configure();
 	else if (bridge->driver == &intel_830mp_driver)
 		intel_830mp_configure();
 	else if (bridge->driver == &intel_915_driver)
 		intel_i915_configure();
+	else if (bridge->driver == &intel_830_driver)
+		intel_i830_configure();
 
 	return 0;
 }

drivers/scsi/qla2xxx/qla_os.c

@@ -859,7 +859,7 @@ qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
 	 * In all other cases we'll let an irq pick up our IO and submit it
 	 * to the controller to improve affinity.
 	 */
-	if (smp_processor_id() == ha->last_irq_cpu || was_empty)
+	if (_smp_processor_id() == ha->last_irq_cpu || was_empty)
 		qla2x00_next(ha);
 
 	spin_lock_irq(ha->host->host_lock);

drivers/serial/8250.c

@@ -987,8 +987,11 @@ receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
 		/* The following is not allowed by the tty layer and
 		   unsafe. It should be fixed ASAP */
 		if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
-			if(tty->low_latency)
+			if (tty->low_latency) {
+				spin_unlock(&up->port.lock);
 				tty_flip_buffer_push(tty);
+				spin_lock(&up->port.lock);
+			}
 			/* If this failed then we will throw away the
 			   bytes but must do so to clear interrupts */
 		}
@@ -1059,7 +1062,9 @@ receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
 	ignore_char:
 		lsr = serial_inp(up, UART_LSR);
 	} while ((lsr & UART_LSR_DR) && (max_count-- > 0));
+	spin_unlock(&up->port.lock);
 	tty_flip_buffer_push(tty);
+	spin_lock(&up->port.lock);
 	*status = lsr;
 }
 

fs/hostfs/hostfs.h

@@ -16,9 +16,30 @@
 #define HOSTFS_ATTR_CTIME	64
 #define HOSTFS_ATTR_ATIME_SET	128
 #define HOSTFS_ATTR_MTIME_SET	256
+
+/* These two are unused by hostfs. */
 #define HOSTFS_ATTR_FORCE	512	/* Not a change, but a change it */
 #define HOSTFS_ATTR_ATTR_FLAG	1024
 
+/* If you are very careful, you'll notice that these two are missing:
+ *
+ * #define ATTR_KILL_SUID	2048
+ * #define ATTR_KILL_SGID	4096
+ *
+ * and this is because they were added in 2.5 development in this patch:
+ *
+ * http://linux.bkbits.net:8080/linux-2.5/
+ * cset@3caf4a12k4XgDzK7wyK-TGpSZ9u2Ww?nav=index.html
+ * |src/.|src/include|src/include/linux|related/include/linux/fs.h
+ *
+ * Actually, they are not needed by most ->setattr() methods - they are set by
+ * callers of notify_change() to notify that the setuid/setgid bits must be
+ * dropped.
+ * notify_change() will delete those flags, make sure attr->ia_valid & ATTR_MODE
+ * is on, and remove the appropriate bits from attr->ia_mode (attr is a
+ * "struct iattr *"). -BlaisorBlade
+ */
+
 struct hostfs_iattr {
 	unsigned int	ia_valid;
 	mode_t		ia_mode;

fs/hostfs/hostfs_kern.c

@@ -823,6 +823,10 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
 	char *name;
 	int err;
 
+	err = inode_change_ok(dentry->d_inode, attr);
+	if (err)
+		return err;
+
 	if(append)
 		attr->ia_valid &= ~ATTR_SIZE;
 

fs/xfs/linux-2.6/xfs_file.c

@@ -531,6 +531,7 @@ struct file_operations linvfs_dir_operations = {
 
 static struct vm_operations_struct linvfs_file_vm_ops = {
 	.nopage		= filemap_nopage,
+	.populate	= filemap_populate,
 #ifdef HAVE_VMOP_MPROTECT
 	.mprotect	= linvfs_mprotect,
 #endif

include/asm-x86_64/system.h

@@ -35,7 +35,7 @@
 		     "thread_return:\n\t"					    \
 		     "movq %%gs:%P[pda_pcurrent],%%rsi\n\t"			  \
 		     "movq %P[thread_info](%%rsi),%%r8\n\t"			  \
-		     "btr  %[tif_fork],%P[ti_flags](%%r8)\n\t"			  \
+		     LOCK "btr  %[tif_fork],%P[ti_flags](%%r8)\n\t"		  \
 		     "movq %%rax,%%rdi\n\t" 					  \
 		     "jc   ret_from_fork\n\t"					  \
 		     RESTORE_CONTEXT						    \

include/linux/mm.h

@@ -756,7 +756,9 @@ extern unsigned long page_unuse(struct page *);
 extern void truncate_inode_pages(struct address_space *, loff_t);
 
 /* generic vm_area_ops exported for stackable file systems */
-struct page *filemap_nopage(struct vm_area_struct *, unsigned long, int *);
+extern struct page *filemap_nopage(struct vm_area_struct *, unsigned long, int *);
+extern int filemap_populate(struct vm_area_struct *, unsigned long,
+		unsigned long, pgprot_t, unsigned long, int);
 
 /* mm/page-writeback.c */
 int write_one_page(struct page *page, int wait);

kernel/sched.c

@@ -867,7 +867,7 @@ void wait_task_inactive(task_t * p)
 repeat:
 	rq = task_rq_lock(p, &flags);
 	/* Must be off runqueue entirely, not preempted. */
-	if (unlikely(p->array)) {
+	if (unlikely(p->array || task_running(rq, p))) {
 		/* If it's preempted, we yield.  It could be a while. */
 		preempted = !task_running(rq, p);
 		task_rq_unlock(rq, &flags);
@@ -885,6 +885,12 @@ void wait_task_inactive(task_t * p)
  *
  * Cause a process which is running on another CPU to enter
  * kernel-mode, without any delay. (to get signals handled.)
+ *
+ * NOTE: this function doesnt have to take the runqueue lock,
+ * because all it wants to ensure is that the remote task enters
+ * the kernel. If the IPI races and the task has been migrated
+ * to another CPU then no harm is done and the purpose has been
+ * achieved as well.
  */
 void kick_process(task_t *p)
 {

mm/filemap.c

@@ -1458,11 +1458,8 @@ static struct page * filemap_getpage(struct file *file, unsigned long pgoff,
 	return NULL;
 }
 
-static int filemap_populate(struct vm_area_struct *vma,
-			unsigned long addr,
-			unsigned long len,
-			pgprot_t prot,
-			unsigned long pgoff,
+int filemap_populate(struct vm_area_struct *vma, unsigned long addr,
+		unsigned long len, pgprot_t prot, unsigned long pgoff,
 		int nonblock)
 {
 	struct file *file = vma->vm_file;
@@ -1523,6 +1520,7 @@ int generic_file_mmap(struct file * file, struct vm_area_struct * vma)
 	vma->vm_ops = &generic_file_vm_ops;
 	return 0;
 }
+EXPORT_SYMBOL(filemap_populate);
 
 /*
  * This is for filesystems which do not implement ->writepage.