Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - a few block updates that fell in my lap

 - lib/ updates

 - checkpatch

 - autofs

 - ipc

 - a ton of misc other things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
  mm: split gfp_mask and mapping flags into separate fields
  fs: use mapping_set_error instead of opencoded set_bit
  treewide: remove redundant #include <linux/kconfig.h>
  hung_task: allow hung_task_panic when hung_task_warnings is 0
  kthread: add kerneldoc for kthread_create()
  kthread: better support freezable kthread workers
  kthread: allow to modify delayed kthread work
  kthread: allow to cancel kthread work
  kthread: initial support for delayed kthread work
  kthread: detect when a kthread work is used by more workers
  kthread: add kthread_destroy_worker()
  kthread: add kthread_create_worker*()
  kthread: allow to call __kthread_create_on_node() with va_list args
  kthread/smpboot: do not park in kthread_create_on_cpu()
  kthread: kthread worker API cleanup
  kthread: rename probe_kthread_data() to kthread_probe_data()
  scripts/tags.sh: enable code completion in VIM
  mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
  kdump, vmcoreinfo: report memory sections virtual addresses
  ipc/sem.c: add cond_resched in exit_sme
  ...

2 files changed, 222 insertions, 0 deletions

diff --git a/include/uapi/linux/auto_dev-ioctl.h b/include/uapi/linux/auto_dev-ioctl.h
new file mode 100644
index 000000000000..021ed331dd71
--- /dev/null
+++ b/include/uapi/linux/auto_dev-ioctl.h
@@ -0,0 +1,221 @@
+/*
+ * Copyright 2008 Red Hat, Inc. All rights reserved.
+ * Copyright 2008 Ian Kent <raven@themaw.net>
+ *
+ * This file is part of the Linux kernel and is made available under
+ * the terms of the GNU General Public License, version 2, or at your
+ * option, any later version, incorporated herein by reference.
+ */
+
+#ifndef _UAPI_LINUX_AUTO_DEV_IOCTL_H
+#define _UAPI_LINUX_AUTO_DEV_IOCTL_H
+
+#include <linux/auto_fs.h>
+#include <linux/string.h>
+
+#define AUTOFS_DEVICE_NAME              "autofs"
+
+#define AUTOFS_DEV_IOCTL_VERSION_MAJOR  1
+#define AUTOFS_DEV_IOCTL_VERSION_MINOR  0
+
+#define AUTOFS_DEV_IOCTL_SIZE           sizeof(struct autofs_dev_ioctl)
+
+/*
+ * An ioctl interface for autofs mount point control.
+ */
+
+struct args_protover {
+        __u32   version;
+};
+
+struct args_protosubver {
+        __u32   sub_version;
+};
+
+struct args_openmount {
+        __u32   devid;
+};
+
+struct args_ready {
+        __u32   token;
+};
+
+struct args_fail {
+        __u32   token;
+        __s32   status;
+};
+
+struct args_setpipefd {
+        __s32   pipefd;
+};
+
+struct args_timeout {
+        __u64   timeout;
+};
+
+struct args_requester {
+        __u32   uid;
+        __u32   gid;
+};
+
+struct args_expire {
+        __u32   how;
+};
+
+struct args_askumount {
+        __u32   may_umount;
+};
+
+struct args_ismountpoint {
+        union {
+                struct args_in {
+                        __u32   type;
+                } in;
+                struct args_out {
+                        __u32   devid;
+                        __u32   magic;
+                } out;
+        };
+};
+
+/*
+ * All the ioctls use this structure.
+ * When sending a path size must account for the total length
+ * of the chunk of memory otherwise is is the size of the
+ * structure.
+ */
+
+struct autofs_dev_ioctl {
+        __u32 ver_major;
+        __u32 ver_minor;
+        __u32 size;             /* total size of data passed in
+                                 * including this struct */
+        __s32 ioctlfd;          /* automount command fd */
+
+        /* Command parameters */
+
+        union {
+                struct args_protover            protover;
+                struct args_protosubver         protosubver;
+                struct args_openmount           openmount;
+                struct args_ready               ready;
+                struct args_fail                fail;
+                struct args_setpipefd           setpipefd;
+                struct args_timeout             timeout;
+                struct args_requester           requester;
+                struct args_expire              expire;
+                struct args_askumount           askumount;
+                struct args_ismountpoint        ismountpoint;
+        };
+
+        char path[0];
+};
+
+static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in)
+{
+        memset(in, 0, sizeof(struct autofs_dev_ioctl));
+        in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR;
+        in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR;
+        in->size = sizeof(struct autofs_dev_ioctl);
+        in->ioctlfd = -1;
+}
+
+/*
+ * If you change this make sure you make the corresponding change
+ * to autofs-dev-ioctl.c:lookup_ioctl()
+ */
+enum {
+        /* Get various version info */
+        AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71,
+        AUTOFS_DEV_IOCTL_PROTOVER_CMD,
+        AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD,
+
+        /* Open mount ioctl fd */
+        AUTOFS_DEV_IOCTL_OPENMOUNT_CMD,
+
+        /* Close mount ioctl fd */
+        AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD,
+
+        /* Mount/expire status returns */
+        AUTOFS_DEV_IOCTL_READY_CMD,
+        AUTOFS_DEV_IOCTL_FAIL_CMD,
+
+        /* Activate/deactivate autofs mount */
+        AUTOFS_DEV_IOCTL_SETPIPEFD_CMD,
+        AUTOFS_DEV_IOCTL_CATATONIC_CMD,
+
+        /* Expiry timeout */
+        AUTOFS_DEV_IOCTL_TIMEOUT_CMD,
+
+        /* Get mount last requesting uid and gid */
+        AUTOFS_DEV_IOCTL_REQUESTER_CMD,
+
+        /* Check for eligible expire candidates */
+        AUTOFS_DEV_IOCTL_EXPIRE_CMD,
+
+        /* Request busy status */
+        AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD,
+
+        /* Check if path is a mountpoint */
+        AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD,
+};
+
+#define AUTOFS_IOCTL 0x93
+
+#define AUTOFS_DEV_IOCTL_VERSION \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_PROTOVER \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_PROTOSUBVER \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_OPENMOUNT \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_CLOSEMOUNT \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_READY \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_FAIL \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_SETPIPEFD \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_CATATONIC \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_TIMEOUT \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_REQUESTER \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_EXPIRE \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_ASKUMOUNT \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl)
+
+#define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \
+        _IOWR(AUTOFS_IOCTL, \
+              AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl)
+
+#endif  /* _UAPI_LINUX_AUTO_DEV_IOCTL_H */
diff --git a/include/uapi/linux/auto_fs.h b/include/uapi/linux/auto_fs.h
index 9175a1b4dc69..1bfc3ed8b284 100644
--- a/include/uapi/linux/auto_fs.h
+++ b/include/uapi/linux/auto_fs.h
@@ -12,6 +12,7 @@
 #define _UAPI_LINUX_AUTO_FS_H
 
 #include <linux/types.h>
+#include <linux/limits.h>
 #ifndef __KERNEL__
 #include <sys/ioctl.h>
 #endif /* __KERNEL__ */