locks: provide a file lease method enabling cluster-coherent leases

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Currently leases are only kept locally, so there's no way for a distributed
filesystem to enforce them against multiple clients.  We're particularly
interested in the case of nfsd exporting a cluster filesystem, in which
case nfsd needs cluster-coherent leases in order to implement delegations
correctly.

Also add some documentation.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

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J. Bruce Fields 2006-11-14 15:51:40 -05:00 • committed by J. Bruce Fields

parent a9933cea7a

commit f9ffed26d6

2 changed files with 23 additions and 2 deletions

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24

fs/locks.c

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1

include/linux/fs.h

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