• Tejun Heo's avatar
    sysfs: copy bin mmap support from fs/sysfs/bin.c to fs/sysfs/file.c · 73d97146
    Tejun Heo authored
    
    
    sysfs bin file handling will be merged into the regular file support.
    This patch copies mmap support from bin so that fs/sysfs/file.c can
    handle mmapping bin files.
    
    The code is copied mostly verbatim with the following updates.
    
    * ->mmapped and ->vm_ops are added to sysfs_open_file and bin_buffer
      references are replaced with sysfs_open_file ones.
    
    * Symbols are prefixed with sysfs_.
    
    * sysfs_unmap_bin_file() grabs sysfs_open_dirent and traverses
      ->files.  Invocation of this function is added to
      sysfs_addrm_finish().
    
    * sysfs_bin_mmap() is added to sysfs_bin_operations.
    
    This is a preparation and the new mmap path isn't used yet.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    73d97146