Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...

Pull overlayfs updates from Miklos Szeredi:
 "This update contains fixes to the "use mounter's permission to access
  underlying layers" area, and miscellaneous other fixes and cleanups.

  No new features this time"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: use vfs_get_link()
  vfs: add vfs_get_link() helper
  ovl: use generic_readlink
  ovl: explain error values when removing acl from workdir
  ovl: Fix info leak in ovl_lookup_temp()
  ovl: during copy up, switch to mounter's creds early
  ovl: lookup: do getxattr with mounter's permission
  ovl: copy_up_xattr(): use strnlen

diff --cc fs/namei.c
Simple merge

diff --cc fs/overlayfs/copy_up.c
index 3f803b3a1f8295b9d9d3f903cc9f1198c6910f4a,e9d4013ed3c6ac1649116f620d603292339c5453..aeb60f791418d6d6cba59f2dc743e8b8c71d5297
--- 1/fs/overlayfs/copy_up.c
--- 2/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@@ -57,9 -57,10 +57,10 @@@ int ovl_copy_xattr(struct dentry *old, 
        ssize_t list_size, size, value_size = 0;
        char *buf, *name, *value = NULL;
        int uninitialized_var(error);
+       size_t slen;
  
 -      if (!old->d_inode->i_op->getxattr ||
 -          !new->d_inode->i_op->getxattr)
 +      if (!(old->d_inode->i_opflags & IOP_XATTR) ||
 +          !(new->d_inode->i_opflags & IOP_XATTR))
                return 0;
  
        list_size = vfs_listxattr(old, NULL, 0);

diff --cc fs/overlayfs/dir.c
Simple merge

diff --cc fs/overlayfs/inode.c
index c18d6a4ff456bfd57015eebc0e0c083246d55fb0,bc6d261db669f21f569c434f74655670f53c8111..c58f01babf30e7ecbfe86ab0862a8c8171734866
--- 1/fs/overlayfs/inode.c
--- 2/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@@ -375,9 -354,12 +351,9 @@@ static const struct inode_operations ov
  static const struct inode_operations ovl_symlink_inode_operations = {
        .setattr        = ovl_setattr,
        .get_link       = ovl_get_link,
-       .readlink       = ovl_readlink,
+       .readlink       = generic_readlink,
        .getattr        = ovl_getattr,
 -      .setxattr       = generic_setxattr,
 -      .getxattr       = generic_getxattr,
        .listxattr      = ovl_listxattr,
 -      .removexattr    = generic_removexattr,
        .update_time    = ovl_update_time,
  };
  

diff --cc fs/overlayfs/super.c
Simple merge

diff --cc include/linux/fs.h
Simple merge