pNFS: Don't send LAYOUTGET on OPEN for read, if we already have cached data

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If we're only opening the file for reading, and the file is empty and/or
we already have cached data, then heuristically optimise away the
LAYOUTGET.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

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Trond Myklebust 2017-02-02 12:26:38 -05:00 • committed by Trond Myklebust

parent 8dc96566c0

commit 64294b08f9

1 changed files with 5 additions and 0 deletions

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fs/nfs/pnfs.c

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