pnfs: add return_range method

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If a layout driver keeps per-inode state outside of the layout segments it
needs to be notified of any layout returns or recalls on an inode, and not
just about the freeing of layout segments.  Add a method to acomplish this,
which will allow the block layout driver to handle the case of truncated
and re-expanded files properly.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

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Christoph Hellwig 2014-09-10 08:23:31 -07:00 • committed by Trond Myklebust

parent 612aa983a0

commit c88953d87f

3 changed files with 22 additions and 3 deletions

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12

fs/nfs/callback_proc.c

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10

fs/nfs/pnfs.c

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3

fs/nfs/pnfs.h

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