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[PATCH] knfsd: nfsd4: fix laundromat shutdown race

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We need to make sure the laundromat work doesn't reschedule itself just when
we try to cancel it.  Also, we shouldn't be waiting for it to finish running
while holding the state lock, as that's a potential deadlock.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-04-10 22:55:37 -07:00 committed by Linus Torvalds
parent 6f54e2d0d3
commit 5e8d5c2948
1 changed files with 2 additions and 2 deletions
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4
fs/nfsd/nfs4state.c
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@ -3238,8 +3238,6 @@ __nfs4_state_shutdown(void)
}
cancel_delayed_work(&laundromat_work);
flush_workqueue(laundry_wq);
destroy_workqueue(laundry_wq);
nfsd4_shutdown_recdir();
nfs4_init = 0;
}
@ -3247,6 +3245,8 @@ __nfs4_state_shutdown(void)
void
nfs4_state_shutdown(void)
{
cancel_rearming_delayed_workqueue(laundry_wq, &laundromat_work);
destroy_workqueue(laundry_wq);
nfs4_lock_state();
nfs4_release_reclaim();
__nfs4_state_shutdown();