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
  ...

1 files changed, 8 insertions, 14 deletions

diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index 5bb5872ffee6..6653473f2757 100644
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -160,13 +160,11 @@ static int vhci_create_device(struct vhci_data *data, __u8 opcode)
 }
 
 static inline ssize_t vhci_get_user(struct vhci_data *data,
-                                    const struct iovec *iov,
-                                    unsigned long count)
+                                    struct iov_iter *from)
 {
-        size_t len = iov_length(iov, count);
+        size_t len = iov_iter_count(from);
         struct sk_buff *skb;
         __u8 pkt_type, opcode;
-        unsigned long i;
         int ret;
 
         if (len < 2 || len > HCI_MAX_FRAME_SIZE)
@@ -176,12 +174,9 @@ static inline ssize_t vhci_get_user(struct vhci_data *data,
         if (!skb)
                 return -ENOMEM;
 
-        for (i = 0; i < count; i++) {
-                if (copy_from_user(skb_put(skb, iov[i].iov_len),
-                                   iov[i].iov_base, iov[i].iov_len)) {
-                        kfree_skb(skb);
-                        return -EFAULT;
-                }
+        if (copy_from_iter(skb_put(skb, len), len, from) != len) {
+                kfree_skb(skb);
+                return -EFAULT;
         }
 
         pkt_type = *((__u8 *) skb->data);
@@ -294,13 +289,12 @@ static ssize_t vhci_read(struct file *file,
         return ret;
 }
 
-static ssize_t vhci_write(struct kiocb *iocb, const struct iovec *iov,
-                          unsigned long count, loff_t pos)
+static ssize_t vhci_write(struct kiocb *iocb, struct iov_iter *from)
 {
         struct file *file = iocb->ki_filp;
         struct vhci_data *data = file->private_data;
 
-        return vhci_get_user(data, iov, count);
+        return vhci_get_user(data, from);
 }
 
 static unsigned int vhci_poll(struct file *file, poll_table *wait)
@@ -365,7 +359,7 @@ static int vhci_release(struct inode *inode, struct file *file)
 static const struct file_operations vhci_fops = {
         .owner          = THIS_MODULE,
         .read           = vhci_read,
-        .aio_write      = vhci_write,
+        .write_iter     = vhci_write,
         .poll           = vhci_poll,
         .open           = vhci_open,
         .release        = vhci_release,