NFSv4: Be less aggressive about returning delegations for open files

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Currently, if the application that holds the file open isn't doing
I/O, we may end up returning the delegation. This means that we can
no longer cache the file as aggressively, and often also that we
multiply the state that both the server and the client needs to track.

This patch adds a check for open files to the routine that scans
for delegations that are unreferenced.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

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This commit is contained in:

Trond Myklebust 2013-04-03 14:33:49 -04:00

parent db4f2e637f

commit b757144fd7

2 changed files with 28 additions and 3 deletions

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30

fs/nfs/delegation.c

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1

fs/nfs/delegation.h

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