On Jul 12, 2007  13:56 +0530, Amit K. Arora wrote:

As you suggest, let us just have two modes for the time being:

#define FALLOC_ALLOCATE			0x1
#define FALLOC_ALLOCATE_KEEP_SIZE	0x2

As the name suggests, when FALLOC_ALLOCATE_KEEP_SIZE mode is passed it
will result in file size not being changed even if the preallocation is
beyond EOF.

What does FALLOC_ALLOCATE mean vs. not passing this flag?  I have no
objection to this as long as the code remains with these as "flags"
instead of "modes"...  Essentially just dropping the FALLOC_FL_DEALLOCATE
and FALLOC_FL_DEL_DATA from the interface.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.