• Amir Goldstein's avatar
    ovl: mark upper merge dir with type origin entries "impure" · f3a15685
    Amir Goldstein authored
    An upper dir is marked "impure" to let ovl_iterate() know that this
    directory may contain non pure upper entries whose d_ino may need to be
    read from the origin inode.
    
    We already mark a non-merge dir "impure" when moving a non-pure child
    entry inside it, to let ovl_iterate() know not to iterate the non-merge
    dir directly.
    
    Mark also a merge dir "impure" when moving a non-pure child entry inside
    it and when copying up a child entry inside it.
    
    This can be used to optimize ovl_iterate() to perform a "pure merge" of
    upper and lower directories, merging the content of the directories,
    without having to read d_ino from origin inodes.
    Signed-off-by: default avatarAmir Goldstein <amir73il@gmail.com>
    Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
    f3a15685
super.c 24.2 KB