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Diffstat (limited to 'fs/nfsd/nfsctl.c')
-rw-r--r--fs/nfsd/nfsctl.c98
1 files changed, 25 insertions, 73 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 87fed7580..f206ca32e 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -48,10 +48,6 @@ enum {
NFSD_MaxBlkSize,
NFSD_MaxConnections,
NFSD_Filecache,
- /*
- * The below MUST come last. Otherwise we leave a hole in nfsd_files[]
- * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
- */
#ifdef CONFIG_NFSD_V4
NFSD_Leasetime,
NFSD_Gracetime,
@@ -76,7 +72,9 @@ static ssize_t write_maxconn(struct file *file, char *buf, size_t size);
#ifdef CONFIG_NFSD_V4
static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
static ssize_t write_gracetime(struct file *file, char *buf, size_t size);
+#ifdef CONFIG_NFSD_LEGACY_CLIENT_TRACKING
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
+#endif
static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size);
#endif
@@ -93,7 +91,9 @@ static ssize_t (*const write_op[])(struct file *, char *, size_t) = {
#ifdef CONFIG_NFSD_V4
[NFSD_Leasetime] = write_leasetime,
[NFSD_Gracetime] = write_gracetime,
+#ifdef CONFIG_NFSD_LEGACY_CLIENT_TRACKING
[NFSD_RecoveryDir] = write_recoverydir,
+#endif
[NFSD_V4EndGrace] = write_v4_end_grace,
#endif
};
@@ -179,7 +179,7 @@ static const struct file_operations pool_stats_operations = {
.open = nfsd_pool_stats_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = nfsd_pool_stats_release,
+ .release = seq_release,
};
DEFINE_SHOW_ATTRIBUTE(nfsd_reply_cache_stats);
@@ -707,12 +707,9 @@ static ssize_t __write_ports_addfd(char *buf, struct net *net, const struct cred
serv = nn->nfsd_serv;
err = svc_addsock(serv, net, fd, buf, SIMPLE_TRANSACTION_LIMIT, cred);
- if (err < 0 && !serv->sv_nrthreads && !nn->keep_active)
- nfsd_last_thread(net);
- else if (err >= 0 && !serv->sv_nrthreads && !xchg(&nn->keep_active, 1))
- svc_get(serv);
+ if (!serv->sv_nrthreads && list_empty(&nn->nfsd_serv->sv_permsocks))
+ nfsd_destroy_serv(net);
- svc_put(serv);
return err;
}
@@ -750,10 +747,6 @@ static ssize_t __write_ports_addxprt(char *buf, struct net *net, const struct cr
if (err < 0 && err != -EAFNOSUPPORT)
goto out_close;
- if (!serv->sv_nrthreads && !xchg(&nn->keep_active, 1))
- svc_get(serv);
-
- svc_put(serv);
return 0;
out_close:
xprt = svc_find_xprt(serv, transport, net, PF_INET, port);
@@ -762,10 +755,9 @@ out_close:
svc_xprt_put(xprt);
}
out_err:
- if (!serv->sv_nrthreads && !nn->keep_active)
- nfsd_last_thread(net);
+ if (!serv->sv_nrthreads && list_empty(&nn->nfsd_serv->sv_permsocks))
+ nfsd_destroy_serv(net);
- svc_put(serv);
return err;
}
@@ -1021,6 +1013,7 @@ static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn);
}
+#ifdef CONFIG_NFSD_LEGACY_CLIENT_TRACKING
static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size,
struct nfsd_net *nn)
{
@@ -1081,6 +1074,7 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
mutex_unlock(&nfsd_mutex);
return rv;
}
+#endif
/*
* write_v4_end_grace - release grace period for nfsd's v4.x lock manager
@@ -1244,63 +1238,34 @@ static inline void _nfsd_symlink(struct dentry *parent, const char *name,
#endif
-static void clear_ncl(struct inode *inode)
+static void clear_ncl(struct dentry *dentry)
{
+ struct inode *inode = d_inode(dentry);
struct nfsdfs_client *ncl = inode->i_private;
+ spin_lock(&inode->i_lock);
inode->i_private = NULL;
+ spin_unlock(&inode->i_lock);
kref_put(&ncl->cl_ref, ncl->cl_release);
}
-static struct nfsdfs_client *__get_nfsdfs_client(struct inode *inode)
-{
- struct nfsdfs_client *nc = inode->i_private;
-
- if (nc)
- kref_get(&nc->cl_ref);
- return nc;
-}
-
struct nfsdfs_client *get_nfsdfs_client(struct inode *inode)
{
struct nfsdfs_client *nc;
- inode_lock_shared(inode);
- nc = __get_nfsdfs_client(inode);
- inode_unlock_shared(inode);
+ spin_lock(&inode->i_lock);
+ nc = inode->i_private;
+ if (nc)
+ kref_get(&nc->cl_ref);
+ spin_unlock(&inode->i_lock);
return nc;
}
-/* from __rpc_unlink */
-static void nfsdfs_remove_file(struct inode *dir, struct dentry *dentry)
-{
- int ret;
-
- clear_ncl(d_inode(dentry));
- dget(dentry);
- ret = simple_unlink(dir, dentry);
- d_drop(dentry);
- fsnotify_unlink(dir, dentry);
- dput(dentry);
- WARN_ON_ONCE(ret);
-}
-
-static void nfsdfs_remove_files(struct dentry *root)
-{
- struct dentry *dentry, *tmp;
-
- list_for_each_entry_safe(dentry, tmp, &root->d_subdirs, d_child) {
- if (!simple_positive(dentry)) {
- WARN_ON_ONCE(1); /* I think this can't happen? */
- continue;
- }
- nfsdfs_remove_file(d_inode(root), dentry);
- }
-}
/* XXX: cut'n'paste from simple_fill_super; figure out if we could share
* code instead. */
static int nfsdfs_create_files(struct dentry *root,
const struct tree_descr *files,
+ struct nfsdfs_client *ncl,
struct dentry **fdentries)
{
struct inode *dir = d_inode(root);
@@ -1319,8 +1284,9 @@ static int nfsdfs_create_files(struct dentry *root,
dput(dentry);
goto out;
}
+ kref_get(&ncl->cl_ref);
inode->i_fop = files->ops;
- inode->i_private = __get_nfsdfs_client(dir);
+ inode->i_private = ncl;
d_add(dentry, inode);
fsnotify_create(dir, dentry);
if (fdentries)
@@ -1329,7 +1295,6 @@ static int nfsdfs_create_files(struct dentry *root,
inode_unlock(dir);
return 0;
out:
- nfsdfs_remove_files(root);
inode_unlock(dir);
return -ENOMEM;
}
@@ -1349,7 +1314,7 @@ struct dentry *nfsd_client_mkdir(struct nfsd_net *nn,
dentry = nfsd_mkdir(nn->nfsd_client_dir, ncl, name);
if (IS_ERR(dentry)) /* XXX: tossing errors? */
return NULL;
- ret = nfsdfs_create_files(dentry, files, fdentries);
+ ret = nfsdfs_create_files(dentry, files, ncl, fdentries);
if (ret) {
nfsd_client_rmdir(dentry);
return NULL;
@@ -1360,20 +1325,7 @@ struct dentry *nfsd_client_mkdir(struct nfsd_net *nn,
/* Taken from __rpc_rmdir: */
void nfsd_client_rmdir(struct dentry *dentry)
{
- struct inode *dir = d_inode(dentry->d_parent);
- struct inode *inode = d_inode(dentry);
- int ret;
-
- inode_lock(dir);
- nfsdfs_remove_files(dentry);
- clear_ncl(inode);
- dget(dentry);
- ret = simple_rmdir(dir, dentry);
- WARN_ON_ONCE(ret);
- d_drop(dentry);
- fsnotify_rmdir(dir, dentry);
- dput(dentry);
- inode_unlock(dir);
+ simple_recursive_removal(dentry, clear_ncl);
}
static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 04:54:18 +0000