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authorDai Ngo <dai.ngo@oracle.com>2022-09-14 08:54:26 -0700
committerChuck Lever <chuck.lever@oracle.com>2022-09-26 14:02:41 -0400
commit7746b32f467b3813fb61faaab3258de35806a7ac (patch)
tree22ace645fe5c97affbe517c0f36395cdc2e898cf /fs/nfsd/nfsd.h
parent3a4ea23d86a317c4b68b9a69d51f7e84e1e04357 (diff)
NFSD: add shrinker to reap courtesy clients on low memory condition
Add courtesy_client_reaper to react to low memory condition triggered by the system memory shrinker. The delayed_work for the courtesy_client_reaper is scheduled on the shrinker's count callback using the laundry_wq. The shrinker's scan callback is not used for expiring the courtesy clients due to potential deadlocks. Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/nfsd.h')
-rw-r--r--fs/nfsd/nfsd.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 6ab4ad41ae84..09726c5b9a31 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -505,7 +505,8 @@ extern void unregister_cld_notifier(void);
extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn);
#endif
-extern void nfsd4_init_leases_net(struct nfsd_net *nn);
+extern int nfsd4_init_leases_net(struct nfsd_net *nn);
+extern void nfsd4_leases_net_shutdown(struct nfsd_net *nn);
#else /* CONFIG_NFSD_V4 */
static inline int nfsd4_is_junction(struct dentry *dentry)
@@ -513,7 +514,8 @@ static inline int nfsd4_is_junction(struct dentry *dentry)
return 0;
}
-static inline void nfsd4_init_leases_net(struct nfsd_net *nn) {};
+static inline int nfsd4_init_leases_net(struct nfsd_net *nn) { return 0; };
+static inline void nfsd4_leases_net_shutdown(struct nfsd_net *nn) {};
#define register_cld_notifier() 0
#define unregister_cld_notifier() do { } while(0)