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Re: [PATCH 3/3] block: implement (some of) fallocate for block devices

From Christoph Hellwig <hch@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 3/3] block: implement (some of) fallocate for block devices
Date 2016-03-21 19:20 +0100
Message-ID <rfcAN-Zv-11@gated-at.bofh.it> (permalink)
References <rd38C-6Bt-17@gated-at.bofh.it> <rd38D-6Bt-31@gated-at.bofh.it> <rfa5Y-7FH-19@gated-at.bofh.it> <rfchs-Dm-3@gated-at.bofh.it>
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On Mon, Mar 21, 2016 at 10:52:35AM -0700, Darrick J. Wong wrote:
> > I don't really understand the comment.  But I think you'd be much
> 
> I don't know of a block device primitive that corresponds to the "default"
> mode of fallocate, as documented in the manpage (i.e. mode == 0).  I agree
> that the whole thing could be simplified in the manner you point out below.

SCSI allows 'anchoring' blocks, which is pretty similar to a normal
fallocate, but we don't support anchoring blocks in Linux yet.

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Re: [PATCH 3/3] block: implement (some of) fallocate for block  devices Christoph Hellwig <hch@infradead.org> - 2016-03-21 16:40 +0100
  Re: [PATCH 3/3] block: implement (some of) fallocate for block  devices "Darrick J. Wong" <darrick.wong@oracle.com> - 2016-03-21 19:00 +0100
    Re: [PATCH 3/3] block: implement (some of) fallocate for block  devices Christoph Hellwig <hch@infradead.org> - 2016-03-21 19:20 +0100
      Re: [PATCH 3/3] block: implement (some of) fallocate for block devices "Martin K. Petersen" <martin.petersen@oracle.com> - 2016-03-21 19:30 +0100

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