Messages in this thread | | | Date | Wed, 13 Jun 2012 11:35:49 +1000 | From | Dave Chinner <> | Subject | Re: [PATCH 0/2] Add FALLOC_FL_ZERO_RANGE to fallocate |
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On Tue, Jun 12, 2012 at 05:36:02PM +0200, Paolo Bonzini wrote: > This patch adds the FALLOC_FL_ZERO_RANGE operation mode to fallocate, > resembling the similar XFS ioctl. The new mode can be used with > or without FALLOC_FL_KEEP_SIZE, but of course not together with > FALLOC_FL_PUNCH_HOLE.
!FALLOC_FL_KEEP_SIZE makes no sense for this operation. It is for zeroing an existing section of a file while retaining the allocated space, not for extending or truncating the file. It's the same reason that FALLOC_FL_PUNCH_HOLE must have FALLOC_FL_KEEP_SIZE set.
Also, a minor nit, but you should credit where this code has originated from in the commit messages, and describe the use case for requiring it. i.e. based on:
http://permalink.gmane.org/gmane.linux.file-systems/62449
Cheers,
Dave. -- Dave Chinner david@fromorbit.com
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