Took the 2.5.39 Makefile changes.

arch/um/defconfig

@@ -206,6 +206,9 @@ CONFIG_EXT2_FS=y
 # CONFIG_UDF_RW is not set
 # CONFIG_UFS_FS is not set
 # CONFIG_UFS_FS_WRITE is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_XFS_RT is not set
+# CONFIG_XFS_QUOTA is not set
 
 #
 # Network File Systems

arch/um/drivers/ubd_kern.c

@@ -15,7 +15,6 @@
 #include "linux/blk.h"
 #include "linux/blkdev.h"
 #include "linux/hdreg.h"
-#include "linux/ide.h"
 #include "linux/init.h"
 #include "linux/devfs_fs_kernel.h"
 #include "linux/cdrom.h"
@@ -66,29 +65,44 @@ static struct block_device_operations ubd_blops = {
         revalidate:	ubd_revalidate,
 };
 
-static struct hd_struct	ubd_part[MAX_MINOR] = 
-	{ [ 0 ... MAX_MINOR - 1 ] = { 0, 0, 0 } };
-
 static request_queue_t *ubd_queue;
 
 static int fake_major = 0;
 
-#define INIT_GENDISK(maj, name, parts, shift, blops) \
+#define INIT_GENDISK(maj, index) \
 { \
-	major :		maj, \
-	major_name : 	name, \
-	minor_shift :	shift, \
-	part : 		parts, \
-	next : 		NULL, \
-	fops : 		blops, \
-	flags : 	0 \
-}
-
-static struct gendisk ubd_gendisk = INIT_GENDISK(MAJOR_NR, "ubd", ubd_part,
-						 UBD_SHIFT, &ubd_blops);
-static struct gendisk fake_gendisk = INIT_GENDISK(0, "ubd", ubd_part, 
-						  UBD_SHIFT, &ubd_blops);
+	.major =	maj, \
+	.major_name = 	"ubd", \
+	.minor_shift =	UBD_SHIFT, \
+	.first_minor =	index << UBD_SHIFT, \
+	.part =		NULL, \
+	.next =		NULL, \
+	.fops =		&ubd_blops, \
+	.flags = 	GENHD_FL_DRIVERFS \
+}
+
+static struct gendisk ubd_gendisk[MAX_DEV] = {
+	INIT_GENDISK(MAJOR_NR, 0),
+	INIT_GENDISK(MAJOR_NR, 1),
+	INIT_GENDISK(MAJOR_NR, 2),
+	INIT_GENDISK(MAJOR_NR, 3),
+	INIT_GENDISK(MAJOR_NR, 4),
+	INIT_GENDISK(MAJOR_NR, 5),
+	INIT_GENDISK(MAJOR_NR, 6),
+	INIT_GENDISK(MAJOR_NR, 7)
+};
 
+static struct gendisk fake_gendisk[MAX_DEV] = {
+	INIT_GENDISK(0, 0),
+	INIT_GENDISK(0, 1),
+	INIT_GENDISK(0, 2),
+	INIT_GENDISK(0, 3),
+	INIT_GENDISK(0, 4),
+	INIT_GENDISK(0, 5),
+	INIT_GENDISK(0, 6),
+	INIT_GENDISK(0, 7)
+};
+ 
 #ifdef CONFIG_BLK_DEV_UBD_SYNC
 #define OPEN_FLAGS ((struct openflags) { r : 1, w : 1, s : 1, c : 0 })
 #else
@@ -220,11 +234,12 @@ static int ubd_setup_common(char *str, int *index_out)
 {
 	struct openflags flags = global_openflags;
 	char *backing_file;
-	int n;
+	int i, n;
 
 	if(index_out) *index_out = -1;
 	n = *str++;
 	if(n == '='){
+		static int fake_major_allowed = 1;
 		char *end;
 		int major;
 
@@ -238,8 +253,17 @@ static int ubd_setup_common(char *str, int *index_out)
 			       "ubd_setup : didn't parse major number\n");
 			return(1);
 		}
-		fake_gendisk.major = major;
+
+		if(!fake_major_allowed){
+			printk(KERN_ERR "Can't assign a fake major twice\n");
+			return(1);
+		}
+
+		for(i = 0; i < MAX_DEV; i++)
+			fake_gendisk[i].major = major;
 		fake_major = major;
+		fake_major_allowed = 0;
+
 		printk(KERN_INFO "Setting extra ubd major number to %d\n",
 		       major);
 		return(0);
@@ -315,9 +339,14 @@ __uml_help(ubd_setup,
 
 static int fakehd(char *str)
 {
+	int i;
+
 	printk(KERN_INFO 
 	       "fakehd : Changing ubd_gendisk.major_name to \"hd\".\n");
-	ubd_gendisk.major_name = "hd";
+
+	for(i = 0; i < MAX_DEV; i++)
+		ubd_gendisk[i].major_name = "hd";
+
 	return(1);
 }
 
@@ -401,14 +430,9 @@ static int ubd_add(int n)
 {
  	devfs_handle_t real, fake;
 	char name[sizeof("nnnnnn\0")], dev_name[sizeof("ubd0x")];
- 	int err;
 
 	if(ubd_dev[n].file == NULL) return(-1);
  
- 	err = ubd_revalidate(mk_kdev(MAJOR_NR, n << UBD_SHIFT));
- 	if(err)
- 		return(err);
- 
 	sprintf(name, "%d", n);
 	real = devfs_register(ubd_dir_handle, name, DEVFS_FL_REMOVABLE, 
 			      MAJOR_NR, n << UBD_SHIFT,
@@ -427,9 +451,9 @@ static int ubd_add(int n)
  	if(real == NULL) return(-1);
  	ubd_dev[n].real = real;
  
-	if(!strcmp(ubd_gendisk.major_name, "ubd"))
-		sprintf(dev_name, "%s%d", ubd_gendisk.major_name, n);
-	else sprintf(dev_name, "%s%c", ubd_gendisk.major_name, 
+	if(!strcmp(ubd_gendisk[n].major_name, "ubd"))
+		sprintf(dev_name, "%s%d", ubd_gendisk[n].major_name, n);
+	else sprintf(dev_name, "%s%c", ubd_gendisk[n].major_name, 
 		     n + 'a');
 
 	make_ide_entries(dev_name);
@@ -510,7 +534,8 @@ int ubd_init(void)
 	INIT_QUEUE(ubd_queue, do_ubd_request, &ubd_lock);
 	INIT_ELV(ubd_queue, &ubd_queue->elevator);
 	INIT_HARDSECT(hardsect_size, MAJOR_NR, hardsect_sizes);
-        add_gendisk(&ubd_gendisk);
+	for(i = 0; i < MAX_DEV; i++)
+		add_disk(&ubd_gendisk[i]);
 	if(fake_major != 0){
 		char name[sizeof("ubd_nnn\0")];
 
@@ -523,9 +548,11 @@ int ubd_init(void)
 		}
 		blk_dev[fake_major].queue = ubd_get_queue;
 		INIT_HARDSECT(hardsect_size, fake_major, hardsect_sizes);
-                add_gendisk(&fake_gendisk);
+		for(i = 0; i < MAX_DEV; i++)
+			add_disk(&fake_gendisk[i]);
 	}
-	for(i=0;i<MAX_DEV;i++) ubd_add(i);
+	for(i = 0; i < MAX_DEV; i++) 
+		ubd_add(i);
 	return(0);
 }
 
@@ -647,9 +674,8 @@ static int ubd_open(struct inode *inode, struct file *filp)
 			       "errno = %d\n", n, dev->file, -err);
 			return(err);
 		}
-		err = ubd_file_size(dev, &dev->size);
+		err = ubd_revalidate(inode->i_rdev);
 		if(err) return(err);
-		ubd_part[offset].nr_sects = dev->size / hardsect_sizes[offset];
 	}
 	dev->count++;
 	if((filp->f_mode & FMODE_WRITE) && !dev->openflags.w){
@@ -667,10 +693,14 @@ static int ubd_release(struct inode * inode, struct file * file)
 	offset = n << UBD_SHIFT;
 	if(n > MAX_DEV)
 		return -ENODEV;
+
 	if(--ubd_dev[n].count == 0){
 		ubd_close(&ubd_dev[n]);
-		ubd_part[offset].nr_sects = 0;
+		del_gendisk(&ubd_gendisk[n]);
+		if(fake_major != 0)
+			del_gendisk(&fake_gendisk[n]);
 	}
+
 	return(0);
 }
 
@@ -741,7 +771,6 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req)
 		return(1);
 	}
 
-        req->sector += ubd_part[min].start_sect;
         block = req->sector;
         nsect = req->current_nr_sectors;
 
@@ -816,15 +845,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
 		g.cylinders = dev->size / (128 * 32 * hardsect_sizes[min]);
 		g.start = 2;
 		return(copy_to_user(loc, &g, sizeof(g)) ? -EFAULT : 0);
-	case BLKGETSIZE:   /* Return device size */
-		if(!arg) return(-EINVAL);
-		err = verify_area(VERIFY_WRITE, (long *) arg, sizeof(long));
-		if(err)
-			return(err);
-		put_user(ubd_part[min].nr_sects, (long *) arg);
-		return(0);
-	case BLKRRPART: /* Re-read partition tables */
-		return(ubd_revalidate(inode->i_rdev));
 
 	case HDIO_SET_UNMASKINTR:
 		if(!capable(CAP_SYS_ADMIN)) return(-EACCES);
@@ -877,9 +897,9 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
 
 static int ubd_revalidate(kdev_t rdev)
 {
-	int i, n, offset, err, pcount = 1 << UBD_SHIFT;
+	__u64 size;
+	int n, offset, err;
 	struct ubd *dev;
-	struct hd_struct *part;
 
 	n = minor(rdev) >> UBD_SHIFT;
 	offset = n << UBD_SHIFT;
@@ -887,45 +907,20 @@ static int ubd_revalidate(kdev_t rdev)
 	if(dev->is_dir) 
 		return(0);
 	
-	part = &ubd_part[offset];
-
-	/* clear all old partition counts */
-	for(i = 1; i < pcount; i++) {
-		part[i].start_sect = 0;
-		part[i].nr_sects = 0;
-	}
-
-	/* If it already has been opened we can check the partitions 
-	 * directly 
-	 */
-	if(dev->count){
-		part->start_sect = 0;
-		register_disk(&ubd_gendisk, mk_kdev(MAJOR_NR, offset), pcount, 
-			      &ubd_blops, part->nr_sects);
-	} 
-	else if(dev->file){
-		err = ubd_open_dev(dev);
-		if(err){
-			printk(KERN_ERR "unable to open %s for validation\n",
-			       dev->file);
-			return(err);
-		}
-
-		/* have to recompute sizes since we opened it */
-		err = ubd_file_size(dev, &dev->size);
-		if(err) {
-			ubd_close(dev);
-			return(err);
-		}
-		part->start_sect = 0;
-		part->nr_sects = dev->size / hardsect_sizes[offset];
-		register_disk(&ubd_gendisk, mk_kdev(MAJOR_NR, offset), pcount, 
-			      &ubd_blops, part->nr_sects);
-
-		/* we are done so close it */
+	err = ubd_file_size(dev, &size);
+	if(err) {
 		ubd_close(dev);
-	} 
-	else return(-ENODEV);
+		return(err);
+	}
+
+	if(size != dev->size){
+		set_capacity(&ubd_gendisk[n], size / hardsect_sizes[offset]);
+		if(fake_major != 0)
+			set_capacity(&fake_gendisk[n], 
+				     size / hardsect_sizes[offset]);
+		dev->size = size;
+	}
+	
 	return(0);
 }
 

arch/um/kernel/mem.c

@@ -233,7 +233,7 @@ struct page *arch_validate(struct page *page, int mask, int order)
 		addr += PAGE_SIZE;
 	}
 	if(i == (1 << order)) return(page);
-	page = _alloc_pages(mask, order);
+	page = alloc_pages(mask, order);
 	goto again;
 }
 

arch/um/kernel/process_kern.c

@@ -48,7 +48,7 @@ struct task_struct *get_task(int pid, int require)
 
         ret = NULL;
         read_lock(&tasklist_lock);
-        for_each_task(task){
+        for_each_process(task){
                 if(task->pid == pid){
                         ret = task;
                         break;
@@ -64,7 +64,7 @@ int is_valid_pid(int pid)
 	struct task_struct *task;
 
         read_lock(&tasklist_lock);
-        for_each_task(task){
+        for_each_process(task){
                 if(task->thread.extern_pid == pid){
 			read_unlock(&tasklist_lock);
 			return(1);

arch/um/kernel/reboot.c

@@ -15,7 +15,7 @@ static void kill_off_processes(void)
 	int me;
 
 	me = os_getpid();
-	for_each_task(p){
+	for_each_process(p){
 		if(p->thread.extern_pid != me) 
 			os_kill_process(p->thread.extern_pid);
 	}

arch/um/kernel/sys_call_table.c

@@ -223,6 +223,12 @@ extern syscall_handler_t sys_sendfile64;
 extern syscall_handler_t sys_futex;
 extern syscall_handler_t sys_sched_setaffinity;
 extern syscall_handler_t sys_sched_getaffinity;
+extern syscall_handler_t sys_io_setup;
+extern syscall_handler_t sys_io_destroy;
+extern syscall_handler_t sys_io_getevents;
+extern syscall_handler_t sys_io_submit;
+extern syscall_handler_t sys_io_cancel;
+extern syscall_handler_t sys_exit_group;
 
 #if CONFIG_NFSD
 #define NFSSERVCTL sys_nfsserctl
@@ -234,7 +240,7 @@ extern syscall_handler_t um_mount;
 extern syscall_handler_t um_time;
 extern syscall_handler_t um_stime;
 
-#define LAST_GENERIC_SYSCALL __NR_sched_getaffinity
+#define LAST_GENERIC_SYSCALL __NR_exit_group
 
 #if LAST_GENERIC_SYSCALL > LAST_ARCH_SYSCALL
 #define LAST_SYSCALL LAST_GENERIC_SYSCALL
@@ -465,6 +471,14 @@ syscall_handler_t *sys_call_table[] = {
 	[ __NR_futex ] = sys_futex,
 	[ __NR_sched_setaffinity ] = sys_sched_setaffinity,
 	[ __NR_sched_getaffinity ] = sys_sched_getaffinity,
+	[ __NR_io_setup ] = sys_io_setup,
+	[ __NR_io_destroy ] = sys_io_destroy,
+	[ __NR_io_getevents ] = sys_io_getevents,
+	[ __NR_io_submit ] = sys_io_submit,
+	[ __NR_io_cancel ] = sys_io_cancel,
+	[ __NR_alloc_hugepages ] = sys_ni_syscall,
+	[ __NR_free_hugepages ] = sys_ni_syscall,
+	[ __NR_exit_group ] = sys_exit_group,
 
 	ARCH_SYSCALLS
 	[ LAST_SYSCALL + 1 ... NR_syscalls ] = 

arch/um/link.ld.in → arch/um/vmlinux.lds.S

-OUTPUT_FORMAT("ELF_FORMAT")
+OUTPUT_FORMAT(ELF_FORMAT)
 OUTPUT_ARCH(ELF_ARCH)
 ENTRY(_start)
 jiffies = jiffies_64;
 
 SECTIONS
 {
-  . = START() + SIZEOF_HEADERS;
+  . = START + SIZEOF_HEADERS;
 
   . = ALIGN(4096);
   __binary_start = .;

include/asm-um/irq.h

@@ -6,7 +6,6 @@
  */
 struct task_struct;
 
-#include "asm/arch/irq.h"
 #include "asm/ptrace.h"
 
 #undef NR_IRQS

include/asm-um/percpu.h

-#ifndef __UM_CACHEFLUSH_H
-#define __UM_CACHEFLUSH_H
+#ifndef __UM_PERCPU_H
+#define __UM_PERCPU_H
 
 #include "asm/arch/percpu.h"
 

include/asm-um/pgtable.h

@@ -358,6 +358,18 @@ static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
 #define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
 #define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
 
+#if defined(CONFIG_HIGHPTE) && defined(CONFIG_HIGHMEM4G)
+typedef u32 pte_addr_t;
+#endif
+
+#if defined(CONFIG_HIGHPTE) && defined(CONFIG_HIGHMEM64G)
+typedef u64 pte_addr_t;
+#endif
+
+#if !defined(CONFIG_HIGHPTE)
+typedef pte_t *pte_addr_t;
+#endif
+
 #define update_mmu_cache(vma,address,pte) do ; while (0)
 
 /* Encode and de-code a swap entry */

include/asm-um/system-i386.h

@@ -3,4 +3,35 @@
 
 #include "asm/system-generic.h"
 
+static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
+				      unsigned long new, int size)
+{
+	unsigned long prev;
+	switch (size) {
+	case 1:
+		__asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
+				     : "=a"(prev)
+				     : "q"(new), "m"(*__xg(ptr)), "0"(old)
+				     : "memory");
+		return prev;
+	case 2:
+		__asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
+				     : "=a"(prev)
+				     : "q"(new), "m"(*__xg(ptr)), "0"(old)
+				     : "memory");
+		return prev;
+	case 4:
+		__asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2"
+				     : "=a"(prev)
+				     : "q"(new), "m"(*__xg(ptr)), "0"(old)
+				     : "memory");
+		return prev;
+	}
+	return old;
+}
+
+#define cmpxchg(ptr,o,n)\
+	((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
+					(unsigned long)(n),sizeof(*(ptr))))
+    
 #endif

include/asm-um/timex.h

@@ -12,4 +12,6 @@ static inline cycles_t get_cycles (void)
 	return 0;
 }
 
+#define CLOCK_TICK_RATE (HZ)
+
 #endif