diff options
| author | Dai Ngo <dai.ngo@oracle.com> | 2023-01-11 12:17:09 -0800 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-01-11 21:32:05 -0500 |
| commit | f385f7d244134246f984975ed34cd75f77de479f (patch) | |
| tree | 41bf50360fc39545f6b62b58fcadeed4e04a0670 /fs/nfsd/nfsd.h | |
| parent | e6cf91b7b47ff82b624bdfe2fdcde32bb52e71dd (diff) | |
| download | lwn-f385f7d244134246f984975ed34cd75f77de479f.tar.gz lwn-f385f7d244134246f984975ed34cd75f77de479f.zip | |
NFSD: register/unregister of nfsd-client shrinker at nfsd startup/shutdown time
Currently the nfsd-client shrinker is registered and unregistered at
the time the nfsd module is loaded and unloaded. The problem with this
is the shrinker is being registered before all of the relevant fields
in nfsd_net are initialized when nfsd is started. This can lead to an
oops when memory is low and the shrinker is called while nfsd is not
running.
This patch moves the register/unregister of nfsd-client shrinker from
module load/unload time to nfsd startup/shutdown time.
Fixes: 44df6f439a17 ("NFSD: add delegation reaper to react to low memory condition")
Reported-by: Mike Galbraith <efault@gmx.de>
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.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 93b42ef9ed91..fa0144a74267 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -504,8 +504,7 @@ extern void unregister_cld_notifier(void); extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn); #endif -extern int nfsd4_init_leases_net(struct nfsd_net *nn); -extern void nfsd4_leases_net_shutdown(struct nfsd_net *nn); +extern void nfsd4_init_leases_net(struct nfsd_net *nn); #else /* CONFIG_NFSD_V4 */ static inline int nfsd4_is_junction(struct dentry *dentry) @@ -513,8 +512,7 @@ static inline int nfsd4_is_junction(struct dentry *dentry) return 0; } -static inline int nfsd4_init_leases_net(struct nfsd_net *nn) { return 0; }; -static inline void nfsd4_leases_net_shutdown(struct nfsd_net *nn) {}; +static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { }; #define register_cld_notifier() 0 #define unregister_cld_notifier() do { } while(0) |