Merge branch 'linus' into core/locking

Merge reason: Update to almost-final-.36

Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 files changed, 43 insertions, 39 deletions

diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 267a86c74e2e..2040e6c4f172 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -246,9 +246,11 @@ struct ttm_buffer_object {
 
         atomic_t reserved;
 
-
         /**
          * Members protected by the bo::lock
+         * In addition, setting sync_obj to anything else
+         * than NULL requires bo::reserved to be held. This allows for
+         * checking NULL while reserved but not holding bo::lock.
          */
 
         void *sync_obj_arg;
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 626b629429ff..4e8ea8c8ec1e 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -118,7 +118,6 @@ header-y += eventpoll.h
 header-y += ext2_fs.h
 header-y += fadvise.h
 header-y += falloc.h
-header-y += fanotify.h
 header-y += fb.h
 header-y += fcntl.h
 header-y += fd.h
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 8ba66a9d9022..ba4b85a6d9b8 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -9,37 +9,7 @@
  * These are the only things you should do on a core-file: use only these
  * functions to write out all the necessary info.
  */
-static inline int dump_write(struct file *file, const void *addr, int nr)
-{
-        return file->f_op->write(file, addr, nr, &file->f_pos) == nr;
-}
-
-static inline int dump_seek(struct file *file, loff_t off)
-{
-        int ret = 1;
-
-        if (file->f_op->llseek && file->f_op->llseek != no_llseek) {
-                if (file->f_op->llseek(file, off, SEEK_CUR) < 0)
-                        return 0;
-        } else {
-                char *buf = (char *)get_zeroed_page(GFP_KERNEL);
-
-                if (!buf)
-                        return 0;
-                while (off > 0) {
-                        unsigned long n = off;
-
-                        if (n > PAGE_SIZE)
-                                n = PAGE_SIZE;
-                        if (!dump_write(file, buf, n)) {
-                                ret = 0;
-                                break;
-                        }
-                        off -= n;
-                }
-                free_page((unsigned long)buf);
-        }
-        return ret;
-}
+extern int dump_write(struct file *file, const void *addr, int nr);
+extern int dump_seek(struct file *file, loff_t off);
 
 #endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 926b50322a46..4fd978e7eb83 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -93,6 +93,7 @@ struct elevator_queue
         struct elevator_type *elevator_type;
         struct mutex sysfs_lock;
         struct hlist_head *hash;
+        unsigned int registered:1;
 };
 
 /*
diff --git a/include/linux/module.h b/include/linux/module.h
index 8a6b9fdc7ffa..aace066bad8f 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -686,17 +686,16 @@ extern int module_sysfs_initialized;
 
 
 #ifdef CONFIG_GENERIC_BUG
-int  module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
+void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
                          struct module *);
 void module_bug_cleanup(struct module *);
 
 #else   /* !CONFIG_GENERIC_BUG */
 
-static inline int  module_bug_finalize(const Elf_Ehdr *hdr,
+static inline void module_bug_finalize(const Elf_Ehdr *hdr,
                                         const Elf_Shdr *sechdrs,
                                         struct module *mod)
 {
-        return 0;
 }
 static inline void module_bug_cleanup(struct module *mod) {}
 #endif  /* CONFIG_GENERIC_BUG */
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 9fbc54a2585d..83af1f8d8b74 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -454,7 +454,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
  * Makes rcu_dereference_check() do the dirty work.
  */
 #define rcu_dereference_bh(p) \
-                rcu_dereference_check(p, rcu_read_lock_bh_held())
+                rcu_dereference_check(p, rcu_read_lock_bh_held() || irqs_disabled())
 
 /**
  * rcu_dereference_sched - fetch RCU-protected pointer, checking for RCU-sched
diff --git a/include/linux/types.h b/include/linux/types.h
index 01a082f56ef4..357dbc19606f 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -121,7 +121,15 @@ typedef		__u64		u_int64_t;
 typedef         __s64           int64_t;
 #endif
 
-/* this is a special 64bit data type that is 8-byte aligned */
+/*
+ * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
+ * common 32/64-bit compat problems.
+ * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
+ * architectures) and to 8-byte boundaries on 64-bit architetures.  The new
+ * aligned_64 type enforces 8-byte alignment so that structs containing
+ * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
+ * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
+ */
 #define aligned_u64 __u64 __attribute__((aligned(8)))
 #define aligned_be64 __be64 __attribute__((aligned(8)))
 #define aligned_le64 __le64 __attribute__((aligned(8)))
@@ -178,6 +186,11 @@ typedef __u64 __bitwise __be64;
 typedef __u16 __bitwise __sum16;
 typedef __u32 __bitwise __wsum;
 
+/* this is a special 64bit data type that is 8-byte aligned */
+#define __aligned_u64 __u64 __attribute__((aligned(8)))
+#define __aligned_be64 __be64 __attribute__((aligned(8)))
+#define __aligned_le64 __le64 __attribute__((aligned(8)))
+
 #ifdef __KERNEL__
 typedef unsigned __bitwise__ gfp_t;
 typedef unsigned __bitwise__ fmode_t;
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 0836ccc57121..3efc9f3f43a0 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -614,6 +614,7 @@ int wake_bit_function(wait_queue_t *wait, unsigned mode, int sync, void *key);
                 (wait)->private = current;                              \
                 (wait)->func = autoremove_wake_function;                \
                 INIT_LIST_HEAD(&(wait)->task_list);                     \
+                (wait)->flags = 0;                                      \
         } while (0)
 
 /**
diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h
index 97e07f46a0fa..aa4ebb42a565 100644
--- a/include/media/videobuf-dma-sg.h
+++ b/include/media/videobuf-dma-sg.h
@@ -48,6 +48,7 @@ struct videobuf_dmabuf {
 
         /* for userland buffer */
         int                 offset;
+        size_t              size;
         struct page         **pages;
 
         /* for kernel buffers */
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 27a902d9b3a9..30fce0128dd7 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -161,12 +161,30 @@ static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long l
 {
         struct sk_buff *skb;
 
+        release_sock(sk);
         if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
                 skb_reserve(skb, BT_SKB_RESERVE);
                 bt_cb(skb)->incoming  = 0;
         }
+        lock_sock(sk);
+
+        if (!skb && *err)
+                return NULL;
+
+        *err = sock_error(sk);
+        if (*err)
+                goto out;
+
+        if (sk->sk_shutdown) {
+                *err = -ECONNRESET;
+                goto out;
+        }
 
         return skb;
+
+out:
+        kfree_skb(skb);
+        return NULL;
 }
 
 int bt_err(__u16 code);