tree 8a8ca459f4bc29c8c6898d09765b3130e24862e3
parent ad3829cf1db5cf6a5dfafd54f9291b44f5fb1da8
author Steve French <smfrench@gmail.com> 1408282727 -0500
committer Steve French <smfrench@gmail.com> 1408317158 -0500

enable fallocate punch hole ("fallocate -p") for SMB3

Implement FALLOC_FL_PUNCH_HOLE (which does not change the file size
fortunately so this matches the behavior of the equivalent SMB3
fsctl call) for SMB3 mounts.  This allows "fallocate -p" to work.
It requires that the server support setting files as sparse
(which Windows allows).

Signed-off-by: Steve French <smfrench@gmail.com>