Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (23 commits)
  switch xfs to generic acl caching helpers
  helpers for acl caching + switch to those
  switch shmem to inode->i_acl
  switch reiserfs to inode->i_acl
  switch reiserfs to usual conventions for caching ACLs
  reiserfs: minimal fix for ACL caching
  switch nilfs2 to inode->i_acl
  switch btrfs to inode->i_acl
  switch jffs2 to inode->i_acl
  switch jfs to inode->i_acl
  switch ext4 to inode->i_acl
  switch ext3 to inode->i_acl
  switch ext2 to inode->i_acl
  add caching of ACLs in struct inode
  fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls
  cleanup __writeback_single_inode
  ... and the same for vfsmount id/mount group id
  Make allocation of anon devices cheaper
  update Documentation/filesystems/Locking
  devpts: remove module-related code
  ...

7 files changed, 98 insertions, 33 deletions

diff --git a/include/linux/ext3_fs_i.h b/include/linux/ext3_fs_i.h
index 7894dd0f3b77..ca1bfe90004f 100644
--- a/include/linux/ext3_fs_i.h
+++ b/include/linux/ext3_fs_i.h
@@ -103,10 +103,6 @@ struct ext3_inode_info {
          */
         struct rw_semaphore xattr_sem;
 #endif
-#ifdef CONFIG_EXT3_FS_POSIX_ACL
-        struct posix_acl        *i_acl;
-        struct posix_acl        *i_default_acl;
-#endif
 
         struct list_head i_orphan;      /* unlinked but open inodes */
 
diff --git a/include/linux/falloc.h b/include/linux/falloc.h
index 8e912ab6a072..3c155107d61f 100644
--- a/include/linux/falloc.h
+++ b/include/linux/falloc.h
@@ -3,4 +3,25 @@
 
 #define FALLOC_FL_KEEP_SIZE     0x01 /* default is extend size */
 
+#ifdef __KERNEL__
+
+/*
+ * Space reservation ioctls and argument structure
+ * are designed to be compatible with the legacy XFS ioctls.
+ */
+struct space_resv {
+        __s16           l_type;
+        __s16           l_whence;
+        __s64           l_start;
+        __s64           l_len;          /* len == 0 means until end of file */
+        __s32           l_sysid;
+        __u32           l_pid;
+        __s32           l_pad[4];       /* reserved area */
+};
+
+#define FS_IOC_RESVSP           _IOW('X', 40, struct space_resv)
+#define FS_IOC_RESVSP64         _IOW('X', 42, struct space_resv)
+
+#endif /* __KERNEL__ */
+
 #endif /* _FALLOC_H_ */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 1ff5e4e01952..0872372184fe 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -710,6 +710,9 @@ static inline int mapping_writably_mapped(struct address_space *mapping)
 #define i_size_ordered_init(inode) do { } while (0)
 #endif
 
+struct posix_acl;
+#define ACL_NOT_CACHED ((void *)(-1))
+
 struct inode {
         struct hlist_node       i_hash;
         struct list_head        i_list;
@@ -773,6 +776,10 @@ struct inode {
 #ifdef CONFIG_SECURITY
         void                    *i_security;
 #endif
+#ifdef CONFIG_FS_POSIX_ACL
+        struct posix_acl        *i_acl;
+        struct posix_acl        *i_default_acl;
+#endif
         void                    *i_private; /* fs or device private pointer */
 };
 
@@ -1906,6 +1913,8 @@ static inline int break_lease(struct inode *inode, unsigned int mode)
 
 extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,
                        struct file *filp);
+extern int do_fallocate(struct file *file, int mode, loff_t offset,
+                        loff_t len);
 extern long do_sys_open(int dfd, const char __user *filename, int flags,
                         int mode);
 extern struct file *filp_open(const char *, int, int);
@@ -1914,6 +1923,10 @@ extern struct file * dentry_open(struct dentry *, struct vfsmount *, int,
 extern int filp_close(struct file *, fl_owner_t id);
 extern char * getname(const char __user *);
 
+/* fs/ioctl.c */
+
+extern int ioctl_preallocate(struct file *filp, void __user *argp);
+
 /* fs/dcache.c */
 extern void __init vfs_caches_init_early(void);
 extern void __init vfs_caches_init(unsigned long);
diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h
index 4bc241290c24..0cdba01b7756 100644
--- a/include/linux/posix_acl.h
+++ b/include/linux/posix_acl.h
@@ -83,4 +83,68 @@ extern int posix_acl_chmod_masq(struct posix_acl *, mode_t);
 extern struct posix_acl *get_posix_acl(struct inode *, int);
 extern int set_posix_acl(struct inode *, int, struct posix_acl *);
 
+static inline struct posix_acl *get_cached_acl(struct inode *inode, int type)
+{
+        struct posix_acl **p, *acl;
+        switch (type) {
+        case ACL_TYPE_ACCESS:
+                p = &inode->i_acl;
+                break;
+        case ACL_TYPE_DEFAULT:
+                p = &inode->i_default_acl;
+                break;
+        default:
+                return ERR_PTR(-EINVAL);
+        }
+        acl = ACCESS_ONCE(*p);
+        if (acl) {
+                spin_lock(&inode->i_lock);
+                acl = *p;
+                if (acl != ACL_NOT_CACHED)
+                        acl = posix_acl_dup(acl);
+                spin_unlock(&inode->i_lock);
+        }
+        return acl;
+}
+
+static inline void set_cached_acl(struct inode *inode,
+                                  int type,
+                                  struct posix_acl *acl)
+{
+        struct posix_acl *old = NULL;
+        spin_lock(&inode->i_lock);
+        switch (type) {
+        case ACL_TYPE_ACCESS:
+                old = inode->i_acl;
+                inode->i_acl = posix_acl_dup(acl);
+                break;
+        case ACL_TYPE_DEFAULT:
+                old = inode->i_default_acl;
+                inode->i_default_acl = posix_acl_dup(acl);
+                break;
+        }
+        spin_unlock(&inode->i_lock);
+        if (old != ACL_NOT_CACHED)
+                posix_acl_release(old);
+}
+
+static inline void forget_cached_acl(struct inode *inode, int type)
+{
+        struct posix_acl *old = NULL;
+        spin_lock(&inode->i_lock);
+        switch (type) {
+        case ACL_TYPE_ACCESS:
+                old = inode->i_acl;
+                inode->i_acl = ACL_NOT_CACHED;
+                break;
+        case ACL_TYPE_DEFAULT:
+                old = inode->i_default_acl;
+                inode->i_default_acl = ACL_NOT_CACHED;
+                break;
+        }
+        spin_unlock(&inode->i_lock);
+        if (old != ACL_NOT_CACHED)
+                posix_acl_release(old);
+}
+
 #endif  /* __LINUX_POSIX_ACL_H */
diff --git a/include/linux/reiserfs_acl.h b/include/linux/reiserfs_acl.h
index 8cc65757e47a..b4448853900e 100644
--- a/include/linux/reiserfs_acl.h
+++ b/include/linux/reiserfs_acl.h
@@ -56,15 +56,6 @@ int reiserfs_cache_default_acl(struct inode *dir);
 extern struct xattr_handler reiserfs_posix_acl_default_handler;
 extern struct xattr_handler reiserfs_posix_acl_access_handler;
 
-static inline void reiserfs_init_acl_access(struct inode *inode)
-{
-        REISERFS_I(inode)->i_acl_access = NULL;
-}
-
-static inline void reiserfs_init_acl_default(struct inode *inode)
-{
-        REISERFS_I(inode)->i_acl_default = NULL;
-}
 #else
 
 #define reiserfs_cache_default_acl(inode) 0
@@ -86,12 +77,4 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
 {
         return 0;
 }
-
-static inline void reiserfs_init_acl_access(struct inode *inode)
-{
-}
-
-static inline void reiserfs_init_acl_default(struct inode *inode)
-{
-}
 #endif
diff --git a/include/linux/reiserfs_fs_i.h b/include/linux/reiserfs_fs_i.h
index 76360b36ac33..89f4d3abbf5a 100644
--- a/include/linux/reiserfs_fs_i.h
+++ b/include/linux/reiserfs_fs_i.h
@@ -54,10 +54,6 @@ struct reiserfs_inode_info {
         unsigned int i_trans_id;
         struct reiserfs_journal_list *i_jl;
         struct mutex i_mmap;
-#ifdef CONFIG_REISERFS_FS_POSIX_ACL
-        struct posix_acl *i_acl_access;
-        struct posix_acl *i_acl_default;
-#endif
 #ifdef CONFIG_REISERFS_FS_XATTR
         struct rw_semaphore i_xattr_sem;
 #endif
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index fd83f2584b15..abff6c9b413c 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -19,10 +19,6 @@ struct shmem_inode_info {
         swp_entry_t             i_direct[SHMEM_NR_DIRECT]; /* first blocks */
         struct list_head        swaplist;       /* chain of maybes on swap */
         struct inode            vfs_inode;
-#ifdef CONFIG_TMPFS_POSIX_ACL
-        struct posix_acl        *i_acl;
-        struct posix_acl        *i_default_acl;
-#endif
 };
 
 struct shmem_sb_info {
@@ -45,7 +41,6 @@ static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
 #ifdef CONFIG_TMPFS_POSIX_ACL
 int shmem_permission(struct inode *, int);
 int shmem_acl_init(struct inode *, struct inode *);
-void shmem_acl_destroy_inode(struct inode *);
 
 extern struct xattr_handler shmem_xattr_acl_access_handler;
 extern struct xattr_handler shmem_xattr_acl_default_handler;
@@ -57,9 +52,6 @@ static inline int shmem_acl_init(struct inode *inode, struct inode *dir)
 {
         return 0;
 }
-static inline void shmem_acl_destroy_inode(struct inode *inode)
-{
-}
 #endif  /* CONFIG_TMPFS_POSIX_ACL */
 
 #endif