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| author | J. Bruce Fields <bfields@redhat.com> | 2020-06-23 23:00:33 +0300 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2020-06-29 21:48:02 +0300 |
| commit | 681370f4b00af0fcc65bbfb9f82de526ab7ceb0a (patch) | |
| tree | f9b3be891505d9420ca222fc14452bb7750315f5 /fs/nfsd/nfsd.h | |
| parent | 22cf8419f1319ff87ec759d0ebdff4cbafaee832 (diff) | |
| download | linux-681370f4b00af0fcc65bbfb9f82de526ab7ceb0a.tar.xz | |
nfsd4: fix nfsdfs reference count loop
We don't drop the reference on the nfsdfs filesystem with
mntput(nn->nfsd_mnt) until nfsd_exit_net(), but that won't be called
until the nfsd module's unloaded, and we can't unload the module as long
as there's a reference on nfsdfs. So this prevents module unloading.
Fixes: 2c830dd7209b ("nfsd: persist nfsd filesystem across mounts")
Reported-and-Tested-by: Luo Xiaogang <lxgrxd@163.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfsd.h')
| -rw-r--r-- | fs/nfsd/nfsd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 36cdd81b6688..57c832d1b30f 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -90,6 +90,8 @@ void nfsd_destroy(struct net *net); bool i_am_nfsd(void); +int get_nfsdfs(struct net *); + struct nfsdfs_client { struct kref cl_ref; void (*cl_release)(struct kref *kref); @@ -100,6 +102,7 @@ struct dentry *nfsd_client_mkdir(struct nfsd_net *nn, struct nfsdfs_client *ncl, u32 id, const struct tree_descr *); void nfsd_client_rmdir(struct dentry *dentry); + #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) #ifdef CONFIG_NFSD_V2_ACL extern const struct svc_version nfsd_acl_version2; |