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

Pull vfs updates from Al Viro:
 "The big thing in this pile is Eric's unmount-on-rmdir series; we
  finally have everything we need for that.  The final piece of prereqs
  is delayed mntput() - now filesystem shutdown always happens on
  shallow stack.

  Other than that, we have several new primitives for iov_iter (Matt
  Wilcox, culled from his XIP-related series) pushing the conversion to
  ->read_iter()/ ->write_iter() a bit more, a bunch of fs/dcache.c
  cleanups and fixes (including the external name refcounting, which
  gives consistent behaviour of d_move() wrt procfs symlinks for long
  and short names alike) and assorted cleanups and fixes all over the
  place.

  This is just the first pile; there's a lot of stuff from various
  people that ought to go in this window.  Starting with
  unionmount/overlayfs mess...  ;-/"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (60 commits)
  fs/file_table.c: Update alloc_file() comment
  vfs: Deduplicate code shared by xattr system calls operating on paths
  reiserfs: remove pointless forward declaration of struct nameidata
  don't need that forward declaration of struct nameidata in dcache.h anymore
  take dname_external() into fs/dcache.c
  let path_init() failures treated the same way as subsequent link_path_walk()
  fix misuses of f_count() in ppp and netlink
  ncpfs: use list_for_each_entry() for d_subdirs walk
  vfs: move getname() from callers to do_mount()
  gfs2_atomic_open(): skip lookups on hashed dentry
  [infiniband] remove pointless assignments
  gadgetfs: saner API for gadgetfs_create_file()
  f_fs: saner API for ffs_sb_create_file()
  jfs: don't hash direct inode
  [s390] remove pointless assignment of ->f_op in vmlogrdr ->open()
  ecryptfs: ->f_op is never NULL
  android: ->f_op is never NULL
  nouveau: __iomem misannotations
  missing annotation in fs/file.c
  fs: namespace: suppress 'may be used uninitialized' warnings
  ...

74 files changed, 889 insertions, 960 deletions

diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 8be1ea3bdd5a..fceff7c00a3c 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -237,7 +237,7 @@ noted. This means that most methods can block safely. All methods are
 only called from a process context (i.e. not from an interrupt handler
 or bottom half).
 
-  alloc_inode: this method is called by inode_alloc() to allocate memory
+  alloc_inode: this method is called by alloc_inode() to allocate memory
         for struct inode and initialize it.  If this function is not
         defined, a simple 'struct inode' is allocated.  Normally
         alloc_inode will be used to allocate a larger structure which
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 1402fcc11c2c..f9c732e18284 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -446,7 +446,8 @@ struct procfs_args {
  * unhappy with OSF UFS. [CHECKME]
  */
 static int
-osf_ufs_mount(const char *dirname, struct ufs_args __user *args, int flags)
+osf_ufs_mount(const char __user *dirname,
+              struct ufs_args __user *args, int flags)
 {
         int retval;
         struct cdfs_args tmp;
@@ -466,7 +467,8 @@ osf_ufs_mount(const char *dirname, struct ufs_args __user *args, int flags)
 }
 
 static int
-osf_cdfs_mount(const char *dirname, struct cdfs_args __user *args, int flags)
+osf_cdfs_mount(const char __user *dirname,
+               struct cdfs_args __user *args, int flags)
 {
         int retval;
         struct cdfs_args tmp;
@@ -486,7 +488,8 @@ osf_cdfs_mount(const char *dirname, struct cdfs_args __user *args, int flags)
 }
 
 static int
-osf_procfs_mount(const char *dirname, struct procfs_args __user *args, int flags)
+osf_procfs_mount(const char __user *dirname,
+                 struct procfs_args __user *args, int flags)
 {
         struct procfs_args tmp;
 
@@ -500,28 +503,22 @@ SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
                 int, flag, void __user *, data)
 {
         int retval;
-        struct filename *name;
 
-        name = getname(path);
-        retval = PTR_ERR(name);
-        if (IS_ERR(name))
-                goto out;
         switch (typenr) {
         case 1:
-                retval = osf_ufs_mount(name->name, data, flag);
+                retval = osf_ufs_mount(path, data, flag);
                 break;
         case 6:
-                retval = osf_cdfs_mount(name->name, data, flag);
+                retval = osf_cdfs_mount(path, data, flag);