[PATCH RESEND 4/7] xfsprogs: xfsio: add support FALLOC_FL_COLLAPSE_RANGE for fallocate

[Rich Johnston]

This commit was reverted

commit 19e73c9d220728617816c47a1671cc931c40e45b
Author: Rich Johnston <rjohnston at sgi.com>
Date:   Tue Oct 22 10:15:20 2013 -0500

     Revert "[RESEND, 4/7] xfsprogs: xfsio: add support 
FALLOC_FL_COLLAPSE_RANGE for fallocate"

     This reverts commit e64190f8440286a815060524777b435e06a7b364 until we
     have the fallocate API support merged into the kernel. The kernel
     code is still under review.