Linux on the Microsoft Xbox

Update of /cvsroot/xbox-linux/kernel-2.6/fs/partitions
In directory sc8-pr-cvs10.sourceforge.net:/tmp/cvs-serv5497/fs/partitions

Modified Files:
	Kconfig check.c 
Log Message:
Merge 2.6.20

Index: Kconfig
===================================================================
RCS file: /cvsroot/xbox-linux/kernel-2.6/fs/partitions/Kconfig,v
retrieving revision 1.13
retrieving revision 1.14
diff -u -d -r1.13 -r1.14
--- Kconfig	11 Jun 2007 05:06:13 -0000	1.13
+++ Kconfig	11 Jun 2007 05:08:52 -0000	1.14
@@ -194,7 +194,7 @@
 
 config SGI_PARTITION
 	bool "SGI partition support" if PARTITION_ADVANCED
-	default y if (SGI_IP22 || SGI_IP27 || ((MACH_JAZZ || SNI_RM200_PCI) && !CPU_LITTLE_ENDIAN))
+	default y if (SGI_IP22 || SGI_IP27 || ((MACH_JAZZ || SNI_RM) && !CPU_LITTLE_ENDIAN))
 	help
 	  Say Y here if you would like to be able to read the hard disk
 	  partition table format used by SGI machines.

Index: check.c
===================================================================
RCS file: /cvsroot/xbox-linux/kernel-2.6/fs/partitions/check.c,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -d -r1.18 -r1.19
--- check.c	11 Jun 2007 05:07:36 -0000	1.18
+++ check.c	11 Jun 2007 05:08:52 -0000	1.19
@@ -154,7 +154,7 @@
 check_partition(struct gendisk *hd, struct block_device *bdev)
 {
 	struct parsed_partitions *state;
-	int i, res;
+	int i, res, err;
 
 	state = kmalloc(sizeof(struct parsed_partitions), GFP_KERNEL);
 	if (!state)
@@ -166,10 +166,17 @@
 		sprintf(state->name, "p");
 
 	state->limit = hd->minors;
-	i = res = 0;
+	i = res = err = 0;
 	while (!res && check_part[i]) {
 		memset(&state->parts, 0, sizeof(state->parts));
 		res = check_part[i++](state, bdev);
+ 		if (res < 0) {
+ 			/* We have hit an I/O error which we don't report now.
+ 		 	* But record it, and let the others do their job.
+ 		 	*/
+ 			err = res;
+ 			res = 0;
+ 		}
 	}
 #ifdef CONFIG_XBOX_PARTITION
 	{
@@ -181,12 +188,15 @@
 #endif
 	if (res > 0)
 		return state;
+ 	if (!err)
+ 	/* The partition is unrecognized. So report I/O errors if there were any */
+ 		res = err;
 	if (!res)
 		printk(" unknown partition table\n");
 	else if (warn_no_part)
 		printk(" unable to read partition table\n");
 	kfree(state);
-	return NULL;
+	return ERR_PTR(res);
 }
 
 /*
@@ -274,12 +284,39 @@
 	.show	= part_stat_read
 };
 
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+
+static ssize_t part_fail_store(struct hd_struct * p,
+			       const char *buf, size_t count)
+{
+	int i;
+
+	if (count > 0 && sscanf(buf, "%d", &i) > 0)
+		p->make_it_fail = (i == 0) ? 0 : 1;
+
+	return count;
+}
+static ssize_t part_fail_read(struct hd_struct * p, char *page)
+{
+	return sprintf(page, "%d\n", p->make_it_fail);
+}
+static struct part_attribute part_attr_fail = {
+	.attr = {.name = "make-it-fail", .mode = S_IRUGO | S_IWUSR },
+	.store	= part_fail_store,
+	.show	= part_fail_read
+};
+
+#endif
+
 static struct attribute * default_attrs[] = {
 	&part_attr_uevent.attr,
 	&part_attr_dev.attr,
 	&part_attr_start.attr,
 	&part_attr_size.attr,
 	&part_attr_stat.attr,
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+	&part_attr_fail.attr,
+#endif
 	NULL,
 };
 
@@ -503,6 +540,8 @@
 		disk->fops->revalidate_disk(disk);
 	if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))
 		return 0;
+	if (IS_ERR(state))	/* I/O error reading the partition table */
+		return PTR_ERR(state);
 	for (p = 1; p < state->limit; p++) {
 		sector_t size = state->parts[p].size;
 		sector_t from = state->parts[p].from;