Merge branch 'alpha-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6
* 'alpha-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6:
alpha: simplify and optimize sched_find_first_bit
alpha: invoke oom-killer from page fault
Convert alpha to use clocksources instead of arch_gettimeoffset
diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index 53d64d3..1d83d12 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -443,6 +443,8 @@
231 = /dev/snapshot System memory snapshot device
232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
233 = /dev/kmview View-OS A process with a view
+ 234 = /dev/btrfs-control Btrfs control device
+ 235 = /dev/autofs Autofs control device
240-254 Reserved for local use
255 Reserved for MISC_DYNAMIC_MINOR
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 2cd8c54..fa6551d 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -260,6 +260,7 @@
}
MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
+MODULE_ALIAS("devname:cpu/microcode");
#else
#define microcode_dev_init() 0
#define microcode_dev_exit() do { } while (0)
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 5441688..c5f8eb1 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -2926,5 +2926,5 @@
EXPORT_SYMBOL(ppp_register_compressor);
EXPORT_SYMBOL(ppp_unregister_compressor);
MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(PPP_MAJOR);
-MODULE_ALIAS("/dev/ppp");
+MODULE_ALIAS_CHARDEV(PPP_MAJOR, 0);
+MODULE_ALIAS("devname:ppp");
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 97b2553..005cad6 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1649,3 +1649,4 @@
MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(TUN_MINOR);
+MODULE_ALIAS("devname:net/tun");
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index d29b7f6..d832062 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -736,11 +736,14 @@
};
static struct miscdevice _autofs_dev_ioctl_misc = {
- .minor = MISC_DYNAMIC_MINOR,
+ .minor = AUTOFS_MINOR,
.name = AUTOFS_DEVICE_NAME,
.fops = &_dev_ioctl_fops
};
+MODULE_ALIAS_MISCDEV(AUTOFS_MINOR);
+MODULE_ALIAS("devname:autofs");
+
/* Register/deregister misc character device */
int autofs_dev_ioctl_init(void)
{
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1866dff..2909a03 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -832,11 +832,14 @@
};
static struct miscdevice btrfs_misc = {
- .minor = MISC_DYNAMIC_MINOR,
+ .minor = BTRFS_MINOR,
.name = "btrfs-control",
.fops = &btrfs_ctl_fops
};
+MODULE_ALIAS_MISCDEV(BTRFS_MINOR);
+MODULE_ALIAS("devname:btrfs-control");
+
static int btrfs_interface_init(void)
{
return misc_register(&btrfs_misc);
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index eb7e942..e53df5e 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
MODULE_ALIAS_MISCDEV(FUSE_MINOR);
+MODULE_ALIAS("devname:fuse");
static struct kmem_cache *fuse_req_cachep;
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 8b5f7cc..b631c46 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -31,6 +31,8 @@
#define FUSE_MINOR 229
#define KVM_MINOR 232
#define VHOST_NET_MINOR 233
+#define BTRFS_MINOR 234
+#define AUTOFS_MINOR 235
#define MISC_DYNAMIC_MINOR 255
struct device;
diff --git a/kernel/module.c b/kernel/module.c
index 625985e..333fbcc 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -563,26 +563,33 @@
struct module_use *use;
int no_warn, err;
- if (b == NULL || already_uses(a, b))
- return 0;
+ if (b == NULL || already_uses(a, b)) return 1;
/* If we're interrupted or time out, we fail. */
- err = strong_try_module_get(b);
+ if (wait_event_interruptible_timeout(
+ module_wq, (err = strong_try_module_get(b)) != -EBUSY,
+ 30 * HZ) <= 0) {
+ printk("%s: gave up waiting for init of module %s.\n",
+ a->name, b->name);
+ return 0;
+ }
+
+ /* If strong_try_module_get() returned a different error, we fail. */
if (err)
- return err;
+ return 0;
DEBUGP("Allocating new usage for %s.\n", a->name);
use = kmalloc(sizeof(*use), GFP_ATOMIC);
if (!use) {
printk("%s: out of memory loading\n", a->name);
module_put(b);
- return -ENOMEM;
+ return 0;
}
use->module_which_uses = a;
list_add(&use->list, &b->modules_which_use_me);
no_warn = sysfs_create_link(b->holders_dir, &a->mkobj.kobj, a->name);
- return 0;
+ return 1;
}
EXPORT_SYMBOL_GPL(use_module);
@@ -875,7 +882,7 @@
int use_module(struct module *a, struct module *b)
{
- return strong_try_module_get(b);
+ return strong_try_module_get(b) == 0;
}
EXPORT_SYMBOL_GPL(use_module);
@@ -1046,39 +1053,17 @@
struct module *owner;
const struct kernel_symbol *sym;
const unsigned long *crc;
- DEFINE_WAIT(wait);
- int err;
- long timeleft = 30 * HZ;
-again:
sym = find_symbol(name, &owner, &crc,
!(mod->taints & (1 << TAINT_PROPRIETARY_MODULE)), true);
- if (!sym)
- return NULL;
-
- if (!check_version(sechdrs, versindex, name, mod, crc, owner))
- return NULL;
-
- prepare_to_wait(&module_wq, &wait, TASK_INTERRUPTIBLE);
- err = use_module(mod, owner);
- if (likely(!err) || err != -EBUSY || signal_pending(current)) {
- finish_wait(&module_wq, &wait);
- return err ? NULL : sym;
+ /* use_module can fail due to OOM,
+ or module initialization or unloading */
+ if (sym) {
+ if (!check_version(sechdrs, versindex, name, mod, crc, owner)
+ || !use_module(mod, owner))
+ sym = NULL;
}
-
- /* Module is still loading. Drop lock and wait. */
- mutex_unlock(&module_mutex);
- timeleft = schedule_timeout(timeleft);
- mutex_lock(&module_mutex);
- finish_wait(&module_wq, &wait);
-
- /* Module might be gone entirely, or replaced. Re-lookup. */
- if (timeleft)
- goto again;
-
- printk(KERN_WARNING "%s: gave up waiting for init of module %s.\n",
- mod->name, owner->name);
- return NULL;
+ return sym;
}
/*