NFSD: add support for lock conflict to courteous server

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This patch allows expired client with lock state to be in COURTESY
state. Lock conflict with COURTESY client is resolved by the fs/lock
code using the lm_lock_expirable and lm_expire_lock callback in the
struct lock_manager_operations.

If conflict client is in COURTESY state, set it to EXPIRABLE and
schedule the laundromat to run immediately to expire the client. The
callback lm_expire_lock waits for the laundromat to flush its work
queue before returning to caller.

Reviewed-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

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Dai Ngo 2022-05-02 14:19:26 -07:00 • committed by Chuck Lever

parent 2443da2259

commit 27431affb0

1 changed files with 54 additions and 16 deletions

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fs/nfsd/nfs4state.c

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