[RFC][PATCH 0/4][cr]: Checkpoint/restart file-owner info

[Sukadev Bhattiprolu]

Checkpoint/restart the file-owner information for each 'struct file'
in the application.

  [PATCH 1/4]	Add uid, euid params to f_modown()
  [PATCH 2/4]	Define __f_setown_uid()
  [PATCH 3/4]	Checkpoint file-owner information
  [PATCH 4/4]	Restore file_owner info

  fs/checkpoint.c                |   61 +++++++++++++++++++++++++++++----------
  fs/fcntl.c                     |   22 +++++++++-----
  include/linux/checkpoint_hdr.h |    5 +++
  include/linux/fs.h             |    2 +
  4 files changed, 66 insertions(+), 24 deletions(-)

Signed-off-by: Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com>