../fs/nfsd/nfs4state.c: In function ‘nfsd4_lock’:
../fs/nfsd/nfs4state.c:7969:29: warning: variable ‘sb’ set but not used [-Wunused-but-set-variable]
 7969 |         struct super_block *sb;
      |                             ^~
../fs/nfsd/nfs4state.c: note: in included file (through ../include/linux/wait.h, ../include/linux/wait_bit.h, ../include/linux/fs.h):
../include/linux/list.h:229:25: warning: context imbalance in 'put_clnt_odstate' - unexpected unlock
../fs/nfsd/nfs4state.c:1203:9: warning: context imbalance in 'nfs4_put_stid' - unexpected unlock