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NFS: Convert v2 into a module

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The module (nfs2.ko) will be created in the same directory as nfs.ko and
will be automatically loaded the first time you try to mount over NFS v2.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Bryan Schumaker 2012-07-30 16:05:23 -04:00 committed by Trond Myklebust
parent fac1e8e4ef
commit ddda8e0aa8
12 changed files with 50 additions and 24 deletions
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2
fs/nfs/Kconfig
View File

@ -30,7 +30,7 @@ config NFS_FS
If unsure, say N.
config NFS_V2
bool "NFS client support for NFS version 2"
tristate "NFS client support for NFS version 2"
depends on NFS_FS
default y
help

4
fs/nfs/Makefile
View File

@ -9,7 +9,6 @@ nfs-y := client.o dir.o file.o getroot.o inode.o super.o \
write.o namespace.o mount_clnt.o \
dns_resolve.o cache_lib.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o
nfs-$(CONFIG_NFS_V2) += nfs2super.o proc.o nfs2xdr.o
nfs-$(CONFIG_NFS_V3) += nfs3super.o nfs3client.o nfs3proc.o nfs3xdr.o
nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
@ -25,6 +24,9 @@ endif
nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
obj-$(CONFIG_NFS_V2) += nfs2.o
nfs2-y := nfs2super.o proc.o nfs2xdr.o
obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
nfs_layout_nfsv41_files-y := nfs4filelayout.o nfs4filelayoutdev.o

12
fs/nfs/client.c
View File

@ -149,11 +149,7 @@ EXPORT_SYMBOL_GPL(unregister_nfs_version);
*/
int __init nfs_register_versions(void)
{
int err = init_nfs_v2();
if (err)
return err;
err = init_nfs_v3();
int err = init_nfs_v3();
if (err)
return err;
@ -165,7 +161,6 @@ int __init nfs_register_versions(void)
*/
void nfs_unregister_versions(void)
{
exit_nfs_v2();
exit_nfs_v3();
exit_nfs_v4();
}
@ -222,6 +217,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
error_0:
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(nfs_alloc_client);
#ifdef CONFIG_NFS_V4
/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
@ -284,6 +280,7 @@ void nfs_free_client(struct nfs_client *clp)
dprintk("<-- nfs_free_client()\n");
}
EXPORT_SYMBOL_GPL(nfs_free_client);
/*
* Release a reference to a shared client record
@ -753,6 +750,7 @@ struct nfs_client *nfs_init_client(struct nfs_client *clp,
dprintk("<-- nfs_init_client() = xerror %d\n", error);
return ERR_PTR(error);
}
EXPORT_SYMBOL_GPL(nfs_init_client);
/*
* Create a version 2 or 3 client
@ -1122,6 +1120,7 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info,
nfs_free_server(server);
return ERR_PTR(error);
}
EXPORT_SYMBOL_GPL(nfs_create_server);
/*
* Clone an NFS2, NFS3 or NFS4 server record
@ -1191,6 +1190,7 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
dprintk("<-- nfs_clone_server() = error %d\n", error);
return ERR_PTR(error);
}
EXPORT_SYMBOL_GPL(nfs_clone_server);
void nfs_clients_init(struct net *net)
{

13
fs/nfs/dir.c
View File

@ -17,6 +17,7 @@
* 6 Jun 1999 Cache readdir lookups in the page cache. -DaveM
*/
#include <linux/module.h>
#include <linux/time.h>
#include <linux/errno.h>
#include <linux/stat.h>
@ -1196,6 +1197,7 @@ const struct dentry_operations nfs_dentry_operations = {
.d_automount = nfs_d_automount,
.d_release = nfs_d_release,
};
EXPORT_SYMBOL_GPL(nfs_dentry_operations);
struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags)
{
@ -1263,6 +1265,7 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
nfs_free_fhandle(fhandle);
return res;
}
EXPORT_SYMBOL_GPL(nfs_lookup);
#ifdef CONFIG_NFS_V4
static int nfs4_lookup_revalidate(struct dentry *, unsigned int);
@ -1508,6 +1511,7 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle,
dput(parent);
return error;
}
EXPORT_SYMBOL_GPL(nfs_instantiate);
/*
* Following a failed create operation, we drop the dentry rather
@ -1536,6 +1540,7 @@ int nfs_create(struct inode *dir, struct dentry *dentry,
d_drop(dentry);
return error;
}
EXPORT_SYMBOL_GPL(nfs_create);
/*
* See comments for nfs_proc_create regarding failed operations.
@ -1563,6 +1568,7 @@ nfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
d_drop(dentry);
return status;
}
EXPORT_SYMBOL_GPL(nfs_mknod);
/*
* See comments for nfs_proc_create regarding failed operations.
@ -1586,6 +1592,7 @@ int nfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
d_drop(dentry);
return error;
}
EXPORT_SYMBOL_GPL(nfs_mkdir);
static void nfs_dentry_handle_enoent(struct dentry *dentry)
{
@ -1609,6 +1616,7 @@ int nfs_rmdir(struct inode *dir, struct dentry *dentry)
return error;
}
EXPORT_SYMBOL_GPL(nfs_rmdir);
/*
* Remove a file after making sure there are no pending writes,
@ -1680,6 +1688,7 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry)
d_rehash(dentry);
return error;
}
EXPORT_SYMBOL_GPL(nfs_unlink);
/*
* To create a symbolic link, most file systems instantiate a new inode,
@ -1750,6 +1759,7 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
return 0;
}
EXPORT_SYMBOL_GPL(nfs_symlink);
int
nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
@ -1771,6 +1781,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
}
return error;
}
EXPORT_SYMBOL_GPL(nfs_link);
/*
* RENAME
@ -1869,6 +1880,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
dput(dentry);
return error;
}
EXPORT_SYMBOL_GPL(nfs_rename);
static DEFINE_SPINLOCK(nfs_access_lru_lock);
static LIST_HEAD(nfs_access_lru_list);
@ -2188,6 +2200,7 @@ int nfs_permission(struct inode *inode, int mask)
res = generic_permission(inode, mask);
goto out;
}
EXPORT_SYMBOL_GPL(nfs_permission);
/*
* Local variables:

2
fs/nfs/file.c
View File

@ -16,6 +16,7 @@
* nfs regular file handling functions
*/
#include <linux/module.h>
#include <linux/time.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@ -865,3 +866,4 @@ const struct file_operations nfs_file_operations = {
.check_flags = nfs_check_flags,
.setlease = nfs_setlease,
};
EXPORT_SYMBOL_GPL(nfs_file_operations);

10
fs/nfs/inode.c
View File

@ -193,6 +193,7 @@ void nfs_invalidate_atime(struct inode *inode)
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
spin_unlock(&inode->i_lock);
}
EXPORT_SYMBOL_GPL(nfs_invalidate_atime);
/*
* Invalidate, but do not unhash, the inode.
@ -438,6 +439,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
out:
return error;
}
EXPORT_SYMBOL_GPL(nfs_setattr);
/**
* nfs_vmtruncate - unmap mappings "freed" by truncate() syscall
@ -496,6 +498,7 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
nfs_vmtruncate(inode, attr->ia_size);
}
}
EXPORT_SYMBOL_GPL(nfs_setattr_update_inode);
int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
@ -535,6 +538,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
out:
return err;
}
EXPORT_SYMBOL_GPL(nfs_getattr);
static void nfs_init_lock_context(struct nfs_lock_context *l_ctx)
{
@ -623,6 +627,7 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
return;
nfs_revalidate_inode(server, inode);
}
EXPORT_SYMBOL_GPL(nfs_close_context);
struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode)
{
@ -1028,6 +1033,7 @@ void nfs_fattr_init(struct nfs_fattr *fattr)
fattr->owner_name = NULL;
fattr->group_name = NULL;
}
EXPORT_SYMBOL_GPL(nfs_fattr_init);
struct nfs_fattr *nfs_alloc_fattr(void)
{
@ -1038,6 +1044,7 @@ struct nfs_fattr *nfs_alloc_fattr(void)
nfs_fattr_init(fattr);
return fattr;
}
EXPORT_SYMBOL_GPL(nfs_alloc_fattr);
struct nfs_fh *nfs_alloc_fhandle(void)
{
@ -1048,6 +1055,7 @@ struct nfs_fh *nfs_alloc_fhandle(void)
fh->size = 0;
return fh;
}
EXPORT_SYMBOL_GPL(nfs_alloc_fhandle);
#ifdef NFS_DEBUG
/*
@ -1168,6 +1176,7 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
return status;
}
EXPORT_SYMBOL_GPL(nfs_refresh_inode);
static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
@ -1255,6 +1264,7 @@ int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fa
spin_unlock(&inode->i_lock);
return status;
}
EXPORT_SYMBOL_GPL(nfs_post_op_update_inode_force_wcc);
/*
* Many nfs protocol calls return the new file attributes after

2
fs/nfs/namespace.c
View File

@ -7,6 +7,7 @@
* NFS namespace
*/
#include <linux/module.h>
#include <linux/dcache.h>
#include <linux/gfp.h>
#include <linux/mount.h>
@ -255,3 +256,4 @@ struct vfsmount *nfs_submount(struct nfs_server *server, struct dentry *dentry,
return nfs_do_submount(dentry, fh, fattr, server->client->cl_auth->au_flavor);
}
EXPORT_SYMBOL_GPL(nfs_submount);

14
fs/nfs/nfs.h
View File

@ -24,20 +24,6 @@ struct nfs_subversion {
int nfs_register_versions(void);
void nfs_unregister_versions(void);
#ifdef CONFIG_NFS_V2
int init_nfs_v2(void);
void exit_nfs_v2(void);
#else /* CONFIG_NFS_V2 */
static inline int __init init_nfs_v2(void)
{
return 0;
}
static inline void exit_nfs_v2(void)
{
}
#endif /* CONFIG_NFS_V2 */
#ifdef CONFIG_NFS_V3
int init_nfs_v3(void);
void exit_nfs_v3(void);

9
fs/nfs/nfs2super.c
View File

@ -14,13 +14,18 @@ static struct nfs_subversion nfs_v2 = {
.sops = &nfs_sops,
};
int __init init_nfs_v2(void)
static int __init init_nfs_v2(void)
{
register_nfs_version(&nfs_v2);
return 0;
}
void exit_nfs_v2(void)
static void __exit exit_nfs_v2(void)
{
unregister_nfs_version(&nfs_v2);
}
MODULE_LICENSE("GPL");
module_init(init_nfs_v2);
module_exit(exit_nfs_v2);

1
fs/nfs/read.c
View File

@ -113,6 +113,7 @@ void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
nfs_pageio_init(pgio, inode, &nfs_pageio_read_ops, compl_ops,
NFS_SERVER(inode)->rsize, 0);
}
EXPORT_SYMBOL_GPL(nfs_pageio_init_read);
void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
{

3
fs/nfs/super.c
View File

@ -289,6 +289,7 @@ struct file_system_type nfs_fs_type = {
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
EXPORT_SYMBOL_GPL(nfs_fs_type);
struct file_system_type nfs_xdev_fs_type = {
.owner = THIS_MODULE,
@ -312,6 +313,7 @@ const struct super_operations nfs_sops = {
.show_stats = nfs_show_stats,
.remount_fs = nfs_remount,
};
EXPORT_SYMBOL_GPL(nfs_sops);
#ifdef CONFIG_NFS_V4
static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *);
@ -1670,6 +1672,7 @@ struct dentry *nfs_try_mount(int flags, const char *dev_name,
return nfs_fs_mount_common(server, flags, dev_name, mount_info, nfs_mod);
}
EXPORT_SYMBOL_GPL(nfs_try_mount);
/*
* Split "dev_name" into "hostname:export_path".

2
fs/nfs/write.c
View File

@ -1210,6 +1210,7 @@ void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
nfs_pageio_init(pgio, inode, &nfs_pageio_write_ops, compl_ops,
NFS_SERVER(inode)->wsize, ioflags);
}
EXPORT_SYMBOL_GPL(nfs_pageio_init_write);
void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
{
@ -1688,6 +1689,7 @@ int nfs_wb_all(struct inode *inode)
return sync_inode(inode, &wbc);
}
EXPORT_SYMBOL_GPL(nfs_wb_all);
int nfs_wb_page_cancel(struct inode *inode, struct page *page)
{