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    SubjectRe: [PATCH 0/2] Add FALLOC_FL_ZERO_RANGE to fallocate
    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_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:


    Dave Chinner

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