Merge branch 'overlayfs-linus' of git://

Pull overlayfs updates from Miklos Szeredi:
 "Various fixes and tweaks"

* 'overlayfs-linus' of git://
  ovl: cleanup unused var in rename2
  ovl: rename is_merge to is_lowest
  ovl: fixed coding style warning
  ovl: Ensure upper filesystem supports d_type
  ovl: Warn on copy up if a process has a R/O fd open to the lower file
  ovl: honor flag MS_SILENT at mount
  ovl: verify upper dentry before unlink and rename