• Linus Torvalds's avatar
    Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs · d9a185f8
    Linus Torvalds authored
    Pull overlayfs updates from Miklos Szeredi:
     "This contains two new features:
    
       - Stack file operations: this allows removal of several hacks from
         the VFS, proper interaction of read-only open files with copy-up,
         possibility to implement fs modifying ioctls properly, and others.
    
       - Metadata only copy-up: when file is on lower layer and only
         metadata is modified (except size) then only copy up the metadata
         and continue to use the data from the lower file"
    
    * tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (66 commits)
      ovl: Enable metadata only feature
      ovl: Do not do metacopy only for ioctl modifying file attr
      ovl: Do not do metadata only copy-up for truncate operation
      ovl: add helper to force data copy-up
      ovl: Check redirect on index as well
      ovl: Set redirect on upper inode when it is linked
      ovl: Set redirect on metacopy files upon rename
      ovl: Do not set dentry type ORIGIN for broken hardlinks
      ovl: Add an inode flag OVL_CONST_INO
      ovl: Treat metacopy dentries as type OVL_PATH_MERGE
      ovl: Check redirects for metacopy files
      ovl: Move some dir related ovl_lookup_single() code in else block
      ovl: Do not expose metacopy only dentry from d_real()
      ovl: Open file with data except for the case of fsync
      ovl: Add helper ovl_inode_realdata()
      ovl: Store lower data inode in ovl_inode
      ovl: Fix ovl_getattr() to get number of blocks from lower
      ovl: Add helper ovl_dentry_lowerdata() to get lower data dentry
      ovl: Copy up meta inode data from lowest data inode
      ovl: Modify ovl_lookup() and friends to lookup metacopy dentry
      ...
    d9a185f8
dcache.h 18.4 KB