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: (57 commits)
  tidy the trailing symlinks traversal up
  Turn resolution of trailing symlinks iterative everywhere
  simplify link_path_walk() tail
  Make trailing symlink resolution in path_lookupat() iterative
  update nd->inode in __do_follow_link() instead of after do_follow_link()
  pull handling of one pathname component into a helper
  fs: allow AT_EMPTY_PATH in linkat(), limit that to CAP_DAC_READ_SEARCH
  Allow passing O_PATH descriptors via SCM_RIGHTS datagrams
  readlinkat(), fchownat() and fstatat() with empty relative pathnames
  Allow O_PATH for symlinks
  New kind of open files - "location only".
  ext4: Copy fs UUID to superblock
  ext3: Copy fs UUID to superblock.
  vfs: Export file system uuid via /proc/<pid>/mountinfo
  unistd.h: Add new syscalls numbers to asm-generic
  x86: Add new syscalls for x86_64
  x86: Add new syscalls for x86_32
  fs: Remove i_nlink check from file system link callback
  fs: Don't allow to create hardlink for deleted file
  vfs: Add open by file handle support
  ...

2 files changed, 6 insertions, 5 deletions

diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index ff27d7a477b2..b4ffad859adb 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -21,9 +21,13 @@ static int btrfs_encode_fh(struct dentry *dentry, u32 *fh, int *max_len,
         int len = *max_len;
         int type;
 
-        if ((len < BTRFS_FID_SIZE_NON_CONNECTABLE) ||
-            (connectable && len < BTRFS_FID_SIZE_CONNECTABLE))
+        if (connectable && (len < BTRFS_FID_SIZE_CONNECTABLE)) {
+                *max_len = BTRFS_FID_SIZE_CONNECTABLE;
                 return 255;
+        } else if (len < BTRFS_FID_SIZE_NON_CONNECTABLE) {
+                *max_len = BTRFS_FID_SIZE_NON_CONNECTABLE;
+                return 255;
+        }
 
         len  = BTRFS_FID_SIZE_NON_CONNECTABLE;
         type = FILEID_BTRFS_WITHOUT_PARENT;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 9007bbd01dbf..4a0107e18747 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4806,9 +4806,6 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
         int err;
         int drop_inode = 0;
 
-        if (inode->i_nlink == 0)
-                return -ENOENT;
-
         /* do not allow sys_link's with other subvols of the same device */
         if (root->objectid != BTRFS_I(inode)->root->objectid)
                 return -EPERM;