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| author | NeilBrown <neilb@suse.de> | 2021-11-29 15:51:25 +1100 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2021-12-13 13:42:54 -0500 |
| commit | d057cfec4940ce6eeffa22b4a71dec203b06cd55 (patch) | |
| tree | c7817ff5cb77c3b2efc198a0949b6a9a8c41176d /fs/nfsd/netns.h | |
| parent | 3ebdbe5203a874614819700d3f470724cb803709 (diff) | |
| download | lwn-d057cfec4940ce6eeffa22b4a71dec203b06cd55.tar.gz lwn-d057cfec4940ce6eeffa22b4a71dec203b06cd55.zip | |
NFSD: simplify locking for network notifier.
nfsd currently maintains an open-coded read/write semaphore (refcount
and wait queue) for each network namespace to ensure the nfs service
isn't shut down while the notifier is running.
This is excessive. As there is unlikely to be contention between
notifiers and they run without sleeping, a single spinlock is sufficient
to avoid problems.
Signed-off-by: NeilBrown <neilb@suse.de>
[ cel: ensure nfsd_notifier_lock is static ]
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/netns.h')
| -rw-r--r-- | fs/nfsd/netns.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h index 1fd59eb0730b..021acdc0d03b 100644 --- a/fs/nfsd/netns.h +++ b/fs/nfsd/netns.h @@ -131,9 +131,6 @@ struct nfsd_net { */ int keep_active; - wait_queue_head_t ntf_wq; - atomic_t ntf_refcnt; - /* * clientid and stateid data for construction of net unique COPY * stateids. |