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NFS client updates for Linux 3.6

Browse source 
Features include:
 - Patches from Bryan to allow splitting of the NFSv2/v3/v4 code into
   separate modules.
 - Fix Oopses in the NFSv4 idmapper
 - Fix a deadlock whereby rpciod tries to allocate a new socket and
   ends up recursing into the NFS code due to memory reclaim.
 - Increase the number of permitted callback connections.
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Merge tag 'nfs-for-3.6-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull second wave of NFS client updates from Trond Myklebust:

 - Patches from Bryan to allow splitting of the NFSv2/v3/v4 code into
   separate modules.

 - Fix Oopses in the NFSv4 idmapper

 - Fix a deadlock whereby rpciod tries to allocate a new socket and ends
   up recursing into the NFS code due to memory reclaim.

 - Increase the number of permitted callback connections.

* tag 'nfs-for-3.6-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: explicitly reject LOCK_MAND flock() requests
  nfs: increase number of permitted callback connections.
  SUNRPC: return negative value in case rpcbind client creation error
  NFS: Convert v4 into a module
  NFS: Convert v3 into a module
  NFS: Convert v2 into a module
  NFS: Keep module parameters in the generic NFS client
  NFS: Split out remaining NFS v4 inode functions
  NFS: Pass super operations and xattr handlers in the nfs_subversion
  NFS: Only initialize the ACL client in the v3 case
  NFS: Create a try_mount rpc op
  NFS: Remove the NFS v4 xdev mount function
  NFS: Add version registering framework
  NFS: Fix a number of bugs in the idmapper
  nfs: skip commit in releasepage if we're freeing memory for fs-related reasons
  sunrpc: clarify comments on rpc_make_runnable
  pnfsblock: bail out partial page IO
This commit is contained in:
Linus Torvalds 2012-07-31 18:45:44 -07:00
commit 6dbb35b0a7
40 changed files with 728 additions and 406 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
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
@ -40,7 +40,7 @@ config NFS_V2
If unsure, say Y.
config NFS_V3
bool "NFS client support for NFS version 3"
tristate "NFS client support for NFS version 3"
depends on NFS_FS
default y
help
@ -72,7 +72,7 @@ config NFS_V3_ACL
If unsure, say N.
config NFS_V4
bool "NFS client support for NFS version 4"
tristate "NFS client support for NFS version 4"
depends on NFS_FS
select SUNRPC_GSS
select KEYS

29
fs/nfs/Makefile
View file

@ -9,22 +9,23 @@ 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) += proc.o nfs2xdr.o
nfs-$(CONFIG_NFS_V3) += nfs3proc.o nfs3xdr.o
nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
nfs4super.o nfs4file.o delegation.o idmap.o \
callback.o callback_xdr.o callback_proc.o \
nfs4namespace.o nfs4getroot.o nfs4client.o
nfs-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
ifeq ($(CONFIG_SYSCTL), y)
nfs-y += sysctl.o
nfs-$(CONFIG_NFS_V4) += nfs4sysctl.o
endif
nfs-$(CONFIG_SYSCTL) += sysctl.o
nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
obj-$(CONFIG_NFS_V2) += nfs2.o
nfs2-y := nfs2super.o proc.o nfs2xdr.o
obj-$(CONFIG_NFS_V3) += nfs3.o
nfs3-y := nfs3super.o nfs3client.o nfs3proc.o nfs3xdr.o
nfs3-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
obj-$(CONFIG_NFS_V4) += nfs4.o
nfs4-y := nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o nfs4super.o nfs4file.o \
delegation.o idmap.o callback.o callback_xdr.o callback_proc.o \
nfs4namespace.o nfs4getroot.o nfs4client.o
nfs4-$(CONFIG_SYSCTL) += nfs4sysctl.o
nfs4-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
nfs_layout_nfsv41_files-y := nfs4filelayout.o nfs4filelayoutdev.o

39
fs/nfs/blocklayout/blocklayout.c
View file

@ -228,6 +228,14 @@ bl_end_par_io_read(void *data, int unused)
schedule_work(&rdata->task.u.tk_work);
}
static bool
bl_check_alignment(u64 offset, u32 len, unsigned long blkmask)
{
if ((offset & blkmask) || (len & blkmask))
return false;
return true;
}
static enum pnfs_try_status
bl_read_pagelist(struct nfs_read_data *rdata)
{
@ -244,6 +252,9 @@ bl_read_pagelist(struct nfs_read_data *rdata)
dprintk("%s enter nr_pages %u offset %lld count %u\n", __func__,
rdata->pages.npages, f_offset, (unsigned int)rdata->args.count);
if (!bl_check_alignment(f_offset, rdata->args.count, PAGE_CACHE_MASK))
goto use_mds;
par = alloc_parallel(rdata);
if (!par)
goto use_mds;
@ -552,7 +563,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
struct bio *bio = NULL;
struct pnfs_block_extent *be = NULL, *cow_read = NULL;
sector_t isect, last_isect = 0, extent_length = 0;
struct parallel_io *par;
struct parallel_io *par = NULL;
loff_t offset = wdata->args.offset;
size_t count = wdata->args.count;
struct page **pages = wdata->args.pages;
@ -563,6 +574,10 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
NFS_SERVER(header->inode)->pnfs_blksize >> PAGE_CACHE_SHIFT;
dprintk("%s enter, %Zu@%lld\n", __func__, count, offset);
/* Check for alignment first */
if (!bl_check_alignment(offset, count, PAGE_CACHE_MASK))
goto out_mds;
/* At this point, wdata->pages is a (sequential) list of nfs_pages.
* We want to write each, and if there is an error set pnfs_error
* to have it redone using nfs.
@ -996,14 +1011,32 @@ bl_clear_layoutdriver(struct nfs_server *server)
return 0;
}
static void
bl_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
if (!bl_check_alignment(req->wb_offset, req->wb_bytes, PAGE_CACHE_MASK))
nfs_pageio_reset_read_mds(pgio);
else
pnfs_generic_pg_init_read(pgio, req);
}
static void
bl_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
if (!bl_check_alignment(req->wb_offset, req->wb_bytes, PAGE_CACHE_MASK))
nfs_pageio_reset_write_mds(pgio);
else
pnfs_generic_pg_init_write(pgio, req);
}
static const struct nfs_pageio_ops bl_pg_read_ops = {
.pg_init = pnfs_generic_pg_init_read,
.pg_init = bl_pg_init_read,
.pg_test = pnfs_generic_pg_test,
.pg_doio = pnfs_generic_pg_readpages,
};
static const struct nfs_pageio_ops bl_pg_write_ops = {
.pg_init = pnfs_generic_pg_init_write,
.pg_init = bl_pg_init_write,
.pg_test = pnfs_generic_pg_test,
.pg_doio = pnfs_generic_pg_writepages,
};

28
fs/nfs/callback.c
View file

@ -37,31 +37,7 @@ static struct nfs_callback_data nfs_callback_info[NFS4_MAX_MINOR_VERSION + 1];
static DEFINE_MUTEX(nfs_callback_mutex);
static struct svc_program nfs4_callback_program;
unsigned int nfs_callback_set_tcpport;
unsigned short nfs_callback_tcpport;
unsigned short nfs_callback_tcpport6;
#define NFS_CALLBACK_MAXPORTNR (65535U)
static int param_set_portnr(const char *val, const struct kernel_param *kp)
{
unsigned long num;
int ret;
if (!val)
return -EINVAL;
ret = strict_strtoul(val, 0, &num);
if (ret == -EINVAL || num > NFS_CALLBACK_MAXPORTNR)
return -EINVAL;
*((unsigned int *)kp->arg) = num;
return 0;
}
static struct kernel_param_ops param_ops_portnr = {
.set = param_set_portnr,
.get = param_get_uint,
};
#define param_check_portnr(name, p) __param_check(name, p, unsigned int);
module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644);
/*
* This is the NFSv4 callback kernel thread.
@ -265,6 +241,10 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
ret = -ENOMEM;
goto out_err;
}
/* As there is only one thread we need to over-ride the
* default maximum of 80 connections
*/
serv->sv_maxconn = 1024;
ret = svc_bind(serv, net);
if (ret < 0) {

2
fs/nfs/callback.h
View file

@ -192,7 +192,7 @@ extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args,
struct cb_process_state *cps);
extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
struct cb_process_state *cps);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
extern void nfs_callback_down(int minorversion);
extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,

191
fs/nfs/client.c
View file

@ -51,25 +51,23 @@
#include "internal.h"
#include "fscache.h"
#include "pnfs.h"
#include "nfs.h"
#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_CLIENT
static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
static DEFINE_SPINLOCK(nfs_version_lock);
static DEFINE_MUTEX(nfs_version_mutex);
static LIST_HEAD(nfs_versions);
/*
* RPC cruft for NFS
*/
static const struct rpc_version *nfs_version[5] = {
#ifdef CONFIG_NFS_V2
[2] = &nfs_version2,
#endif
#ifdef CONFIG_NFS_V3
[3] = &nfs_version3,
#endif
#ifdef CONFIG_NFS_V4
[4] = &nfs_version4,
#endif
[2] = NULL,
[3] = NULL,
[4] = NULL,
};
const struct rpc_program nfs_program = {
@ -85,21 +83,64 @@ struct rpc_stat nfs_rpcstat = {
.program = &nfs_program
};
static struct nfs_subversion *find_nfs_version(unsigned int version)
{
struct nfs_subversion *nfs;
spin_lock(&nfs_version_lock);
#ifdef CONFIG_NFS_V3_ACL
static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program };
static const struct rpc_version *nfsacl_version[] = {
[3] = &nfsacl_version3,
};
list_for_each_entry(nfs, &nfs_versions, list) {
if (nfs->rpc_ops->version == version) {
spin_unlock(&nfs_version_lock);
return nfs;
}
};
const struct rpc_program nfsacl_program = {
.name = "nfsacl",
.number = NFS_ACL_PROGRAM,
.nrvers = ARRAY_SIZE(nfsacl_version),
.version = nfsacl_version,
.stats = &nfsacl_rpcstat,
};
#endif /* CONFIG_NFS_V3_ACL */
spin_unlock(&nfs_version_lock);
return ERR_PTR(-EPROTONOSUPPORT);;
}
struct nfs_subversion *get_nfs_version(unsigned int version)
{
struct nfs_subversion *nfs = find_nfs_version(version);
if (IS_ERR(nfs)) {
mutex_lock(&nfs_version_mutex);
request_module("nfs%d", version);
nfs = find_nfs_version(version);
mutex_unlock(&nfs_version_mutex);
}
if (!IS_ERR(nfs))
try_module_get(nfs->owner);
return nfs;
}
void put_nfs_version(struct nfs_subversion *nfs)
{
module_put(nfs->owner);
}
void register_nfs_version(struct nfs_subversion *nfs)
{
spin_lock(&nfs_version_lock);
list_add(&nfs->list, &nfs_versions);
nfs_version[nfs->rpc_ops->version] = nfs->rpc_vers;
spin_unlock(&nfs_version_lock);
}
EXPORT_SYMBOL_GPL(register_nfs_version);
void unregister_nfs_version(struct nfs_subversion *nfs)
{
spin_lock(&nfs_version_lock);
nfs_version[nfs->rpc_ops->version] = NULL;
list_del(&nfs->list);
spin_unlock(&nfs_version_lock);
}
EXPORT_SYMBOL_GPL(unregister_nfs_version);
/*
* Allocate a shared client record
@ -116,7 +157,10 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
goto error_0;
clp->rpc_ops = cl_init->rpc_ops;
clp->cl_nfs_mod = cl_init->nfs_mod;
try_module_get(clp->cl_nfs_mod->owner);
clp->rpc_ops = clp->cl_nfs_mod->rpc_ops;
atomic_set(&clp->cl_count, 1);
clp->cl_cons_state = NFS_CS_INITING;
@ -145,12 +189,14 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
return clp;
error_cleanup:
put_nfs_version(clp->cl_nfs_mod);
kfree(clp);
error_0:
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(nfs_alloc_client);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
void nfs_cleanup_cb_ident_idr(struct net *net)
{
@ -205,11 +251,13 @@ void nfs_free_client(struct nfs_client *clp)
put_rpccred(clp->cl_machine_cred);
put_net(clp->cl_net);
put_nfs_version(clp->cl_nfs_mod);
kfree(clp->cl_hostname);
kfree(clp);
dprintk("<-- nfs_free_client()\n");
}
EXPORT_SYMBOL_GPL(nfs_free_client);
/*
* Release a reference to a shared client record
@ -324,6 +372,7 @@ int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
}
return 0;
}
EXPORT_SYMBOL_GPL(nfs_sockaddr_match_ipaddr);
#endif /* CONFIG_NFS_V4_1 */
/*
@ -362,7 +411,7 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
continue;
/* Different NFS versions cannot share the same nfs_client */
if (clp->rpc_ops != data->rpc_ops)
if (clp->rpc_ops != data->nfs_mod->rpc_ops)
continue;
if (clp->cl_proto != data->proto)
@ -390,6 +439,7 @@ int nfs_wait_client_init_complete(const struct nfs_client *clp)
return wait_event_killable(nfs_client_active_wq,
nfs_client_init_is_complete(clp));
}
EXPORT_SYMBOL_GPL(nfs_wait_client_init_complete);
/*
* Found an existing client. Make sure it's ready before returning.
@ -431,9 +481,10 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
{
struct nfs_client *clp, *new = NULL;
struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops;
dprintk("--> nfs_get_client(%s,v%u)\n",
cl_init->hostname ?: "", cl_init->rpc_ops->version);
cl_init->hostname ?: "", rpc_ops->version);
/* see if the client already exists */
do {
@ -450,20 +501,20 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
list_add(&new->cl_share_link, &nn->nfs_client_list);
spin_unlock(&nn->nfs_client_lock);
new->cl_flags = cl_init->init_flags;
return cl_init->rpc_ops->init_client(new,
timeparms, ip_addr,
authflavour);
return rpc_ops->init_client(new, timeparms, ip_addr,
authflavour);
}
spin_unlock(&nn->nfs_client_lock);
new = cl_init->rpc_ops->alloc_client(cl_init);
new = rpc_ops->alloc_client(cl_init);
} while (!IS_ERR(new));
dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
cl_init->hostname ?: "", PTR_ERR(new));
return new;
}
EXPORT_SYMBOL_GPL(nfs_get_client);
/*
* Mark a server as ready or failed
@ -474,6 +525,7 @@ void nfs_mark_client_ready(struct nfs_client *clp, int state)
clp->cl_cons_state = state;
wake_up_all(&nfs_client_active_wq);
}
EXPORT_SYMBOL_GPL(nfs_mark_client_ready);
/*
* Initialise the timeout values for a connection
@ -515,6 +567,7 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
BUG();
}
}
EXPORT_SYMBOL_GPL(nfs_init_timeout_values);
/*
* Create an RPC client handle
@ -554,6 +607,7 @@ int nfs_create_rpc_client(struct nfs_client *clp,
clp->cl_rpcclient = clnt;
return 0;
}
EXPORT_SYMBOL_GPL(nfs_create_rpc_client);
/*
* Version 2 or 3 client destruction
@ -605,36 +659,6 @@ static int nfs_start_lockd(struct nfs_server *server)
return 0;
}
/*
* Initialise an NFSv3 ACL client connection
*/
#ifdef CONFIG_NFS_V3_ACL
static void nfs_init_server_aclclient(struct nfs_server *server)
{
if (server->nfs_client->rpc_ops->version != 3)
goto out_noacl;
if (server->flags & NFS_MOUNT_NOACL)
goto out_noacl;
server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
if (IS_ERR(server->client_acl))
goto out_noacl;
/* No errors! Assume that Sun nfsacls are supported */
server->caps |= NFS_CAP_ACLS;
return;
out_noacl:
server->caps &= ~NFS_CAP_ACLS;
}
#else
static inline void nfs_init_server_aclclient(struct nfs_server *server)
{
server->flags &= ~NFS_MOUNT_NOACL;
server->caps &= ~NFS_CAP_ACLS;
}
#endif
/*
* Create a general RPC client
*/
@ -670,6 +694,7 @@ int nfs_init_server_rpcclient(struct nfs_server *server,
return 0;
}
EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
/**
* nfs_init_client - Initialise an NFS2 or NFS3 client
@ -709,18 +734,20 @@ 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
*/
static int nfs_init_server(struct nfs_server *server,
const struct nfs_parsed_mount_data *data)
const struct nfs_parsed_mount_data *data,
struct nfs_subversion *nfs_mod)
{
struct nfs_client_initdata cl_init = {
.hostname = data->nfs_server.hostname,
.addr = (const struct sockaddr *)&data->nfs_server.address,
.addrlen = data->nfs_server.addrlen,
.rpc_ops = NULL,
.nfs_mod = nfs_mod,
.proto = data->nfs_server.protocol,
.net = data->net,
};
@ -730,21 +757,6 @@ static int nfs_init_server(struct nfs_server *server,
dprintk("--> nfs_init_server()\n");
switch (data->version) {
#ifdef CONFIG_NFS_V2
case 2:
cl_init.rpc_ops = &nfs_v2_clientops;
break;
#endif
#ifdef CONFIG_NFS_V3
case 3:
cl_init.rpc_ops = &nfs_v3_clientops;
break;
#endif
default:
return -EPROTONOSUPPORT;
}
nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
data->timeo, data->retrans);
if (data->flags & NFS_MOUNT_NORESVPORT)
@ -798,8 +810,6 @@ static int nfs_init_server(struct nfs_server *server,
server->mountd_protocol = data->mount_server.protocol;
server->namelen = data->namlen;
/* Create a client RPC handle for the NFSv3 ACL management interface */
nfs_init_server_aclclient(server);
dprintk("<-- nfs_init_server() = 0 [new %p]\n", clp);
return 0;
@ -911,6 +921,7 @@ int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs
dprintk("nfs_probe_fsinfo: error = %d\n", -error);
return error;
}
EXPORT_SYMBOL_GPL(nfs_probe_fsinfo);
/*
* Copy useful information when duplicating a server record
@ -927,6 +938,7 @@ void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *sour
target->caps = source->caps;
target->options = source->options;
}
EXPORT_SYMBOL_GPL(nfs_server_copy_userdata);
void nfs_server_insert_lists(struct nfs_server *server)
{
@ -940,6 +952,7 @@ void nfs_server_insert_lists(struct nfs_server *server)
spin_unlock(&nn->nfs_client_lock);
}
EXPORT_SYMBOL_GPL(nfs_server_insert_lists);
static void nfs_server_remove_lists(struct nfs_server *server)
{
@ -999,6 +1012,7 @@ struct nfs_server *nfs_alloc_server(void)
return server;
}
EXPORT_SYMBOL_GPL(nfs_alloc_server);
/*
* Free up a server record
@ -1027,13 +1041,14 @@ void nfs_free_server(struct nfs_server *server)
nfs_release_automount_timer();
dprintk("<-- nfs_free_server()\n");
}
EXPORT_SYMBOL_GPL(nfs_free_server);
/*
* Create a version 2 or 3 volume record
* - keyed on server and FSID
*/
struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
struct nfs_fh *mntfh)
struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
struct nfs_server *server;
struct nfs_fattr *fattr;
@ -1049,7 +1064,7 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
goto error;
/* Get a client representation */
error = nfs_init_server(server, data);
error = nfs_init_server(server, mount_info->parsed, nfs_mod);
if (error < 0)
goto error;
@ -1058,13 +1073,13 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
/* Probe the root fh to retrieve its FSID */
error = nfs_probe_fsinfo(server, mntfh, fattr);
error = nfs_probe_fsinfo(server, mount_info->mntfh, fattr);
if (error < 0)
goto error;
if (server->nfs_client->rpc_ops->version == 3) {
if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN)
server->namelen = NFS3_MAXNAMLEN;
if (!(data->flags & NFS_MOUNT_NORDIRPLUS))
if (!(mount_info->parsed->flags & NFS_MOUNT_NORDIRPLUS))
server->caps |= NFS_CAP_READDIRPLUS;
} else {
if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN)
@ -1072,7 +1087,7 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
}
if (!(fattr->valid & NFS_ATTR_FATTR)) {
error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh, fattr);
if (error < 0) {
dprintk("nfs_create_server: getattr error = %d\n", -error);
goto error;
@ -1094,6 +1109,7 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
nfs_free_server(server);
return ERR_PTR(error);
}
EXPORT_SYMBOL_GPL(nfs_create_server);
/*
* Clone an NFS2, NFS3 or NFS4 server record
@ -1133,8 +1149,6 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
flavor);
if (error < 0)
goto out_free_server;
if (!IS_ERR(source->client_acl))
nfs_init_server_aclclient(server);
/* probe the filesystem info for this server filesystem */
error = nfs_probe_fsinfo(server, fh, fattr_fsinfo);
@ -1165,6 +1179,7 @@ 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)
{
@ -1172,7 +1187,7 @@ void nfs_clients_init(struct net *net)
INIT_LIST_HEAD(&nn->nfs_client_list);
INIT_LIST_HEAD(&nn->nfs_volume_list);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
idr_init(&nn->cb_ident_idr);
#endif
spin_lock_init(&nn->nfs_client_lock);

2
fs/nfs/delegation.h
View file

@ -8,7 +8,7 @@
#ifndef FS_NFS_DELEGATION_H
#define FS_NFS_DELEGATION_H
#if defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V4)
/*
* NFSv4 delegation
*/

20
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>
@ -935,6 +936,7 @@ void nfs_force_lookup_revalidate(struct inode *dir)
{
NFS_I(dir)->cache_change_attribute++;
}
EXPORT_SYMBOL_GPL(nfs_force_lookup_revalidate);
/*
* A check for whether or not the parent directory has changed.
@ -1196,6 +1198,7 @@ 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)
{
@ -1263,8 +1266,9 @@ 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
#if IS_ENABLED(CONFIG_NFS_V4)
static int nfs4_lookup_revalidate(struct dentry *, unsigned int);
const struct dentry_operations nfs4_dentry_operations = {
@ -1274,6 +1278,7 @@ const struct dentry_operations nfs4_dentry_operations = {
.d_automount = nfs_d_automount,
.d_release = nfs_d_release,
};
EXPORT_SYMBOL_GPL(nfs4_dentry_operations);
static fmode_t flags_to_mode(int flags)
{
@ -1416,6 +1421,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
return finish_no_open(file, res);
}
EXPORT_SYMBOL_GPL(nfs_atomic_open);
static int nfs4_lookup_revalidate(struct dentry *dentry, unsigned int flags)
{
@ -1508,6 +1514,7 @@ 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 +1543,7 @@ 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 +1571,7 @@ 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 +1595,7 @@ 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 +1619,7 @@ 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 +1691,7 @@ 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 +1762,7 @@ 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 +1784,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
}
return error;
}
EXPORT_SYMBOL_GPL(nfs_link);
/*
* RENAME
@ -1869,6 +1883,7 @@ 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);
@ -1969,6 +1984,7 @@ void nfs_access_zap_cache(struct inode *inode)
spin_unlock(&nfs_access_lru_lock);
nfs_access_free_list(&head);
}
EXPORT_SYMBOL_GPL(nfs_access_zap_cache);
static struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, struct rpc_cred *cred)
{
@ -2129,6 +2145,7 @@ int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags)
{
return nfs_do_access(inode, cred, nfs_open_permission_mask(openflags));
}
EXPORT_SYMBOL_GPL(nfs_may_open);
int nfs_permission(struct inode *inode, int mask)
{
@ -2188,6 +2205,7 @@ 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/direct.c
View file

@ -460,7 +460,7 @@ static void nfs_inode_dio_write_done(struct inode *inode)
inode_dio_done(inode);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
{
struct nfs_pageio_descriptor desc;

4
fs/nfs/dns_resolve.c
View file

@ -8,6 +8,7 @@
#ifdef CONFIG_NFS_USE_KERNEL_DNS
#include <linux/module.h>
#include <linux/sunrpc/clnt.h>
#include <linux/dns_resolver.h>
#include "dns_resolve.h"
@ -27,9 +28,11 @@ ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen,
kfree(ip_addr);
return ret;
}
EXPORT_SYMBOL_GPL(nfs_dns_resolve_name);
#else
#include <linux/module.h>
#include <linux/hash.h>
#include <linux/string.h>
#include <linux/kmod.h>
@ -345,6 +348,7 @@ ssize_t nfs_dns_resolve_name(struct net *net, char *name,
ret = -ESRCH;
return ret;
}
EXPORT_SYMBOL_GPL(nfs_dns_resolve_name);
int nfs_dns_resolver_cache_init(struct net *net)
{

31
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>
@ -52,6 +53,7 @@ int nfs_check_flags(int flags)
return 0;
}
EXPORT_SYMBOL_GPL(nfs_check_flags);
/*
* Open file
@ -84,6 +86,7 @@ nfs_file_release(struct inode *inode, struct file *filp)
nfs_inc_stats(inode, NFSIOS_VFSRELEASE);
return nfs_release(inode, filp);
}
EXPORT_SYMBOL_GPL(nfs_file_release);
/**
* nfs_revalidate_size - Revalidate the file size
@ -137,6 +140,7 @@ loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
return generic_file_llseek(filp, offset, origin);
}
EXPORT_SYMBOL_GPL(nfs_file_llseek);
/*
* Flush all dirty pages, and check for write errors.
@ -165,6 +169,7 @@ nfs_file_flush(struct file *file, fl_owner_t id)
/* Flush writes to the server and return any errors */
return vfs_fsync(file, 0);
}
EXPORT_SYMBOL_GPL(nfs_file_flush);
ssize_t
nfs_file_read(struct kiocb *iocb, const struct iovec *iov,
@ -189,6 +194,7 @@ nfs_file_read(struct kiocb *iocb, const struct iovec *iov,
}
return result;
}
EXPORT_SYMBOL_GPL(nfs_file_read);
ssize_t
nfs_file_splice_read(struct file *filp, loff_t *ppos,
@ -211,6 +217,7 @@ nfs_file_splice_read(struct file *filp, loff_t *ppos,
}
return res;
}
EXPORT_SYMBOL_GPL(nfs_file_splice_read);
int
nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
@ -232,6 +239,7 @@ nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
}
return status;
}
EXPORT_SYMBOL_GPL(nfs_file_mmap);
/*
* Flush any dirty pages for this process, and check for write errors.
@ -270,6 +278,7 @@ nfs_file_fsync_commit(struct file *file, loff_t start, loff_t end, int datasync)
ret = status;
return ret;
}
EXPORT_SYMBOL_GPL(nfs_file_fsync_commit);
static int
nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
@ -447,8 +456,11 @@ static int nfs_release_page(struct page *page, gfp_t gfp)
dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);
/* Only do I/O if gfp is a superset of GFP_KERNEL */
if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL) {
/* Only do I/O if gfp is a superset of GFP_KERNEL, and we're not
* doing this memory reclaim for a fs-related allocation.
*/
if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL &&
!(current->flags & PF_FSTRANS)) {
int how = FLUSH_SYNC;
/* Don't let kswapd deadlock waiting for OOM RPC calls */
@ -611,6 +623,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, const struct iovec *iov,
printk(KERN_INFO "NFS: attempt to write to active swap file!\n");
goto out;
}
EXPORT_SYMBOL_GPL(nfs_file_write);
ssize_t nfs_file_splice_write(struct pipe_inode_info *pipe,
struct file *filp, loff_t *ppos,
@ -642,6 +655,7 @@ ssize_t nfs_file_splice_write(struct pipe_inode_info *pipe,
nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
return ret;
}
EXPORT_SYMBOL_GPL(nfs_file_splice_write);
static int
do_getlk(struct file *filp, int cmd, struct file_lock *fl, int is_local)
@ -802,6 +816,7 @@ int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
out_err:
return ret;
}
EXPORT_SYMBOL_GPL(nfs_lock);
/*
* Lock a (portion of) a file
@ -819,6 +834,15 @@ int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
if (!(fl->fl_flags & FL_FLOCK))
return -ENOLCK;
/*
* The NFSv4 protocol doesn't support LOCK_MAND, which is not part of
* any standard. In principle we might be able to support LOCK_MAND
* on NFSv2/3 since NLMv3/4 support DOS share modes, but for now the
* NFS code is not set up for it.
*/
if (fl->fl_type & LOCK_MAND)
return -EINVAL;
if (NFS_SERVER(inode)->flags & NFS_MOUNT_LOCAL_FLOCK)
is_local = 1;
@ -831,6 +855,7 @@ int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
return do_unlk(filp, cmd, fl, is_local);
return do_setlk(filp, cmd, fl, is_local);
}
EXPORT_SYMBOL_GPL(nfs_flock);
/*
* There is no protocol support for leases, so we have no way to implement
@ -843,6 +868,7 @@ int nfs_setlease(struct file *file, long arg, struct file_lock **fl)
file->f_path.dentry->d_name.name, arg);
return -EINVAL;
}
EXPORT_SYMBOL_GPL(nfs_setlease);
const struct file_operations nfs_file_operations = {
.llseek = nfs_file_llseek,
@ -862,3 +888,4 @@ const struct file_operations nfs_file_operations = {
.check_flags = nfs_check_flags,
.setlease = nfs_setlease,
};
EXPORT_SYMBOL_GPL(nfs_file_operations);

29
fs/nfs/idmap.c
View file

@ -52,8 +52,6 @@
#define NFS_UINT_MAXLEN 11
/* Default cache timeout is 10 minutes */
unsigned int nfs_idmap_cache_timeout = 600;
static const struct cred *id_resolver_cache;
static struct key_type key_type_id_resolver_legacy;
@ -205,12 +203,18 @@ static int nfs_idmap_init_keyring(void)
if (ret < 0)
goto failed_put_key;
ret = register_key_type(&key_type_id_resolver_legacy);
if (ret < 0)
goto failed_reg_legacy;
set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags);
cred->thread_keyring = keyring;
cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
id_resolver_cache = cred;
return 0;
failed_reg_legacy:
unregister_key_type(&key_type_id_resolver);
failed_put_key:
key_put(keyring);
failed_put_cred:
@ -222,6 +226,7 @@ static void nfs_idmap_quit_keyring(void)
{
key_revoke(id_resolver_cache->thread_keyring);
unregister_key_type(&key_type_id_resolver);
unregister_key_type(&key_type_id_resolver_legacy);
put_cred(id_resolver_cache);
}
@ -359,7 +364,6 @@ static int nfs_idmap_lookup_id(const char *name, size_t namelen, const char *typ
}
/* idmap classic begins here */
module_param(nfs_idmap_cache_timeout, int, 0644);
enum {
Opt_find_uid, Opt_find_gid, Opt_find_user, Opt_find_group, Opt_find_err
@ -385,7 +389,7 @@ static const struct rpc_pipe_ops idmap_upcall_ops = {
};
static struct key_type key_type_id_resolver_legacy = {
.name = "id_resolver",
.name = "id_legacy",
.instantiate = user_instantiate,
.match = user_match,
.revoke = user_revoke,
@ -674,6 +678,7 @@ static int nfs_idmap_legacy_upcall(struct key_construction *cons,
if (ret < 0)
goto out2;
BUG_ON(idmap->idmap_key_cons != NULL);
idmap->idmap_key_cons = cons;
ret = rpc_queue_upcall(idmap->idmap_pipe, msg);
@ -687,8 +692,7 @@ static int nfs_idmap_legacy_upcall(struct key_construction *cons,
out1:
kfree(msg);
out0:
key_revoke(cons->key);
key_revoke(cons->authkey);
complete_request_key(cons, ret);
return ret;
}
@ -722,11 +726,18 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
{
struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
struct idmap *idmap = (struct idmap *)rpci->private;
struct key_construction *cons = idmap->idmap_key_cons;
struct key_construction *cons;
struct idmap_msg im;
size_t namelen_in;
int ret;
/* If instantiation is successful, anyone waiting for key construction
* will have been woken up and someone else may now have used
* idmap_key_cons - so after this point we may no longer touch it.
*/
cons = ACCESS_ONCE(idmap->idmap_key_cons);
idmap->idmap_key_cons = NULL;
if (mlen != sizeof(im)) {
ret = -ENOSPC;
goto out;
@ -739,7 +750,7 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
if (!(im.im_status & IDMAP_STATUS_SUCCESS)) {
ret = mlen;
complete_request_key(idmap->idmap_key_cons, -ENOKEY);
complete_request_key(cons, -ENOKEY);
goto out_incomplete;
}
@ -756,7 +767,7 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
}
out:
complete_request_key(idmap->idmap_key_cons, ret);
complete_request_key(cons, ret);
out_incomplete:
return ret;
}

105
fs/nfs/inode.c
View file

@ -50,6 +50,7 @@
#include "fscache.h"
#include "dns_resolve.h"
#include "pnfs.h"
#include "nfs.h"
#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_VFS
@ -81,6 +82,7 @@ int nfs_wait_bit_killable(void *word)
freezable_schedule();
return 0;
}
EXPORT_SYMBOL_GPL(nfs_wait_bit_killable);
/**
* nfs_compat_user_ino64 - returns the user-visible inode number
@ -105,7 +107,7 @@ u64 nfs_compat_user_ino64(u64 fileid)
return ino;
}
static void nfs_clear_inode(struct inode *inode)
void nfs_clear_inode(struct inode *inode)
{
/*
* The following should never happen...
@ -116,6 +118,7 @@ static void nfs_clear_inode(struct inode *inode)
nfs_access_zap_cache(inode);
nfs_fscache_release_inode_cookie(inode);
}
EXPORT_SYMBOL_GPL(nfs_clear_inode);
void nfs_evict_inode(struct inode *inode)
{
@ -185,6 +188,7 @@ void nfs_zap_acl_cache(struct inode *inode)
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL;
spin_unlock(&inode->i_lock);
}
EXPORT_SYMBOL_GPL(nfs_zap_acl_cache);
void nfs_invalidate_atime(struct inode *inode)
{
@ -192,6 +196,7 @@ 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.
@ -390,6 +395,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
dprintk("nfs_fhget: iget failed with error %ld\n", PTR_ERR(inode));
goto out;
}
EXPORT_SYMBOL_GPL(nfs_fhget);
#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE|ATTR_OPEN)
@ -437,6 +443,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
out:
return error;
}
EXPORT_SYMBOL_GPL(nfs_setattr);
/**
* nfs_vmtruncate - unmap mappings "freed" by truncate() syscall
@ -495,6 +502,7 @@ 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)
{
@ -534,6 +542,7 @@ 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)
{
@ -622,6 +631,7 @@ 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)
{
@ -648,6 +658,7 @@ struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f
ctx->mdsthreshold = NULL;
return ctx;
}
EXPORT_SYMBOL_GPL(alloc_nfs_open_context);
struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx)
{
@ -655,6 +666,7 @@ struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx)
atomic_inc(&ctx->lock_context.count);
return ctx;
}
EXPORT_SYMBOL_GPL(get_nfs_open_context);
static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync)
{
@ -682,6 +694,7 @@ void put_nfs_open_context(struct nfs_open_context *ctx)
{
__put_nfs_open_context(ctx, 0);
}
EXPORT_SYMBOL_GPL(put_nfs_open_context);
/*
* Ensure that mmap has a recent RPC credential for use when writing out
@ -697,6 +710,7 @@ void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx)
list_add(&ctx->list, &nfsi->open_files);
spin_unlock(&inode->i_lock);
}
EXPORT_SYMBOL_GPL(nfs_file_set_open_context);
/*
* Given an inode, search for an open context with the desired characteristics
@ -841,6 +855,7 @@ int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}
EXPORT_SYMBOL_GPL(nfs_revalidate_inode);
static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
{
@ -1027,6 +1042,7 @@ 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)
{
@ -1037,6 +1053,7 @@ 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)
{
@ -1047,6 +1064,7 @@ struct nfs_fh *nfs_alloc_fhandle(void)
fh->size = 0;
return fh;
}
EXPORT_SYMBOL_GPL(nfs_alloc_fhandle);
#ifdef NFS_DEBUG
/*
@ -1167,6 +1185,7 @@ 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)
{
@ -1203,6 +1222,7 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
spin_unlock(&inode->i_lock);
return status;
}
EXPORT_SYMBOL_GPL(nfs_post_op_update_inode);
/**
* nfs_post_op_update_inode_force_wcc - try to update the inode attribute cache
@ -1254,6 +1274,7 @@ 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
@ -1471,27 +1492,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
return -ESTALE;
}
#ifdef CONFIG_NFS_V4
/*
* Clean out any remaining NFSv4 state that might be left over due
* to open() calls that passed nfs_atomic_lookup, but failed to call
* nfs_open().
*/
void nfs4_evict_inode(struct inode *inode)
{
truncate_inode_pages(&inode->i_data, 0);
clear_inode(inode);
pnfs_return_layout(inode);
pnfs_destroy_layout(NFS_I(inode));
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation_noreclaim(inode);
/* First call standard NFS clear_inode() code */
nfs_clear_inode(inode);
}
#endif
struct inode *nfs_alloc_inode(struct super_block *sb)
{
struct nfs_inode *nfsi;
@ -1504,11 +1504,12 @@ struct inode *nfs_alloc_inode(struct super_block *sb)
nfsi->acl_access = ERR_PTR(-EAGAIN);
nfsi->acl_default = ERR_PTR(-EAGAIN);
#endif
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
nfsi->nfs4_acl = NULL;
#endif /* CONFIG_NFS_V4 */
return &nfsi->vfs_inode;
}
EXPORT_SYMBOL_GPL(nfs_alloc_inode);
static void nfs_i_callback(struct rcu_head *head)
{
@ -1520,10 +1521,11 @@ void nfs_destroy_inode(struct inode *inode)
{
call_rcu(&inode->i_rcu, nfs_i_callback);
}
EXPORT_SYMBOL_GPL(nfs_destroy_inode);
static inline void nfs4_init_once(struct nfs_inode *nfsi)
{
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
INIT_LIST_HEAD(&nfsi->open_states);
nfsi->delegation = NULL;
nfsi->delegation_state = 0;
@ -1569,6 +1571,7 @@ static void nfs_destroy_inodecache(void)
}
struct workqueue_struct *nfsiod_workqueue;
EXPORT_SYMBOL_GPL(nfsiod_workqueue);
/*
* start up the nfsiod workqueue
@ -1629,94 +1632,80 @@ static int __init init_nfs_fs(void)
err = nfs_dns_resolver_init();
if (err < 0)
goto out11;
goto out10;;
err = register_pernet_subsys(&nfs_net_ops);
if (err < 0)
goto out10;
goto out9;
err = nfs_fscache_register();
if (err < 0)
goto out9;
goto out8;
err = nfsiod_start();
if (err)
goto out8;
goto out7;
err = nfs_fs_proc_init();
if (err)
goto out7;
goto out6;
err = nfs_init_nfspagecache();
if (err)
goto out6;
goto out5;
err = nfs_init_inodecache();
if (err)
goto out5;
goto out4;
err = nfs_init_readpagecache();
if (err)
goto out4;
goto out3;
err = nfs_init_writepagecache();
if (err)
goto out3;
goto out2;
err = nfs_init_directcache();
if (err)
goto out2;
goto out1;
#ifdef CONFIG_PROC_FS
rpc_proc_register(&init_net, &nfs_rpcstat);
#endif
#ifdef CONFIG_NFS_V4
err = init_nfs_v4();
if (err)
goto out1;
#endif
if ((err = register_nfs_fs()) != 0)
goto out0;
return 0;
out0:
#ifdef CONFIG_NFS_V4
exit_nfs_v4();
out1:
#endif
#ifdef CONFIG_PROC_FS
rpc_proc_unregister(&init_net, "nfs");
#endif
nfs_destroy_directcache();
out2:
out1:
nfs_destroy_writepagecache();
out3:
out2:
nfs_destroy_readpagecache();
out4:
out3:
nfs_destroy_inodecache();
out5:
out4:
nfs_destroy_nfspagecache();
out6:
out5:
nfs_fs_proc_exit();
out7:
out6:
nfsiod_stop();
out8:
out7:
nfs_fscache_unregister();
out9:
out8:
unregister_pernet_subsys(&nfs_net_ops);
out10:
out9:
nfs_dns_resolver_destroy();
out11:
out10:
return err;
}
static void __exit exit_nfs_fs(void)
{
#ifdef CONFIG_NFS_V4
exit_nfs_v4();
#endif
nfs_destroy_directcache();
nfs_destroy_writepagecache();
nfs_destroy_readpagecache();

38
fs/nfs/internal.h
View file

@ -90,7 +90,7 @@ struct nfs_client_initdata {
const char *hostname;
const struct sockaddr *addr;
size_t addrlen;
const struct nfs_rpc_ops *rpc_ops;
struct nfs_subversion *nfs_mod;
int proto;
u32 minorversion;
struct net *net;
@ -187,12 +187,11 @@ extern struct nfs_client *nfs4_find_client_ident(struct net *, int);
extern struct nfs_client *
nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
struct nfs4_sessionid *);
extern struct nfs_server *nfs_create_server(
const struct nfs_parsed_mount_data *,
struct nfs_fh *);
extern struct nfs_server *nfs_create_server(struct nfs_mount_info *,
struct nfs_subversion *);
extern struct nfs_server *nfs4_create_server(
const struct nfs_parsed_mount_data *,
struct nfs_fh *);
struct nfs_mount_info *,
struct nfs_subversion *);
extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *,
struct nfs_fh *);
extern void nfs_free_server(struct nfs_server *server);
@ -224,6 +223,13 @@ static inline void nfs_fs_proc_exit(void)
int nfs_sockaddr_match_ipaddr(const struct sockaddr *, const struct sockaddr *);
#endif
/* nfs3client.c */
#if IS_ENABLED(CONFIG_NFS_V3)
struct nfs_server *nfs3_create_server(struct nfs_mount_info *, struct nfs_subversion *);
struct nfs_server *nfs3_clone_server(struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *, rpc_authflavor_t);
#endif
/* callback_xdr.c */
extern struct svc_version nfs4_callback_version1;
extern struct svc_version nfs4_callback_version4;
@ -256,7 +262,7 @@ extern int nfs3_decode_dirent(struct xdr_stream *,
struct nfs_entry *, int);
/* nfs4xdr.c */
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
extern int nfs4_decode_dirent(struct xdr_stream *,
struct nfs_entry *, int);
#endif
@ -266,7 +272,7 @@ extern const u32 nfs41_maxwrite_overhead;
#endif
/* nfs4proc.c */
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
extern struct rpc_procinfo nfs4_procedures[];
#endif
@ -313,24 +319,26 @@ extern struct workqueue_struct *nfsiod_workqueue;
extern struct inode *nfs_alloc_inode(struct super_block *sb);
extern void nfs_destroy_inode(struct inode *);
extern int nfs_write_inode(struct inode *, struct writeback_control *);
extern void nfs_clear_inode(struct inode *);
extern void nfs_evict_inode(struct inode *);
#ifdef CONFIG_NFS_V4
extern void nfs4_evict_inode(struct inode *);
#endif
void nfs_zap_acl_cache(struct inode *inode);
extern int nfs_wait_bit_killable(void *word);
/* super.c */
extern const struct super_operations nfs_sops;
extern struct file_system_type nfs_fs_type;
extern struct file_system_type nfs_xdev_fs_type;
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
extern struct file_system_type nfs4_xdev_fs_type;
extern struct file_system_type nfs4_referral_fs_type;
#endif
struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *,
struct nfs_subversion *);
void nfs_initialise_sb(struct super_block *);
int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount_common(struct file_system_type *, struct nfs_server *,
int, const char *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount_common(struct nfs_server *, int, const char *,
struct nfs_mount_info *, struct nfs_subversion *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
const char *, struct nfs_mount_info *);
@ -356,7 +364,7 @@ struct vfsmount *nfs_do_submount(struct dentry *, struct nfs_fh *,
/* getroot.c */
extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
const char *);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *,
const char *);

17
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>
@ -112,6 +113,7 @@ char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen)
Elong:
return ERR_PTR(-ENAMETOOLONG);
}
EXPORT_SYMBOL_GPL(nfs_path);
/*
* nfs_d_automount - Handle crossing a mountpoint on the server
@ -195,20 +197,7 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
const char *devname,
struct nfs_clone_mount *mountdata)
{
#ifdef CONFIG_NFS_V4
struct vfsmount *mnt = ERR_PTR(-EINVAL);
switch (server->nfs_client->rpc_ops->version) {
case 2:
case 3:
mnt = vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
break;
case 4:
mnt = vfs_kern_mount(&nfs4_xdev_fs_type, 0, devname, mountdata);
}
return mnt;
#else
return vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
#endif
}
/**
@ -253,6 +242,7 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
dprintk("<-- nfs_do_submount() = %p\n", mnt);
return mnt;
}
EXPORT_SYMBOL_GPL(nfs_do_submount);
struct vfsmount *nfs_submount(struct nfs_server *server, struct dentry *dentry,
struct nfs_fh *fh, struct nfs_fattr *fattr)
@ -268,3 +258,4 @@ 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);

2
fs/nfs/netns.h
View file

@ -20,7 +20,7 @@ struct nfs_net {
wait_queue_head_t bl_wq;
struct list_head nfs_client_list;
struct list_head nfs_volume_list;
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
struct idr cb_ident_idr; /* Protected by nfs_client_lock */
#endif
spinlock_t nfs_client_lock;

29
fs/nfs/nfs.h Normal file
View file

@ -0,0 +1,29 @@
/*
* Copyright (c) 2012 Netapp, Inc. All rights reserved.
*
* Function and structures exported by the NFS module
* for use by NFS version-specific modules.
*/
#ifndef __LINUX_INTERNAL_NFS_H
#define __LINUX_INTERNAL_NFS_H
#include <linux/fs.h>
#include <linux/sunrpc/sched.h>
#include <linux/nfs_xdr.h>
struct nfs_subversion {
struct module *owner; /* THIS_MODULE pointer */
struct file_system_type *nfs_fs; /* NFS filesystem type */
const struct rpc_version *rpc_vers; /* NFS version information */
const struct nfs_rpc_ops *rpc_ops; /* NFS operations */
const struct super_operations *sops; /* NFS Super operations */
const struct xattr_handler **xattr; /* NFS xattr handlers */
struct list_head list; /* List of NFS versions */
};
struct nfs_subversion *get_nfs_version(unsigned int);
void put_nfs_version(struct nfs_subversion *);
void register_nfs_version(struct nfs_subversion *);
void unregister_nfs_version(struct nfs_subversion *);
#endif /* __LINUX_INTERNAL_NFS_H */

31
fs/nfs/nfs2super.c Normal file
View file

@ -0,0 +1,31 @@
/*
* Copyright (c) 2012 Netapp, Inc. All rights reserved.
*/
#include <linux/module.h>
#include <linux/nfs_fs.h>
#include "internal.h"
#include "nfs.h"
static struct nfs_subversion nfs_v2 = {
.owner = THIS_MODULE,
.nfs_fs = &nfs_fs_type,
.rpc_vers = &nfs_version2,
.rpc_ops = &nfs_v2_clientops,
.sops = &nfs_sops,
};
static int __init init_nfs_v2(void)
{
register_nfs_version(&nfs_v2);
return 0;
}
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);

65
fs/nfs/nfs3client.c Normal file
View file

@ -0,0 +1,65 @@
#include <linux/nfs_fs.h>
#include <linux/nfs_mount.h>
#include "internal.h"
#ifdef CONFIG_NFS_V3_ACL
static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program };
static const struct rpc_version *nfsacl_version[] = {
[3] = &nfsacl_version3,
};
const struct rpc_program nfsacl_program = {
.name = "nfsacl",
.number = NFS_ACL_PROGRAM,
.nrvers = ARRAY_SIZE(nfsacl_version),
.version = nfsacl_version,
.stats = &nfsacl_rpcstat,
};
/*
* Initialise an NFSv3 ACL client connection
*/
static void nfs_init_server_aclclient(struct nfs_server *server)
{
if (server->flags & NFS_MOUNT_NOACL)
goto out_noacl;
server->client_acl = rpc_bind_new_program(server->client, &nfsacl_program, 3);
if (IS_ERR(server->client_acl))
goto out_noacl;
/* No errors! Assume that Sun nfsacls are supported */
server->caps |= NFS_CAP_ACLS;
return;
out_noacl:
server->caps &= ~NFS_CAP_ACLS;
}
#else
static inline void nfs_init_server_aclclient(struct nfs_server *server)
{
server->flags &= ~NFS_MOUNT_NOACL;
server->caps &= ~NFS_CAP_ACLS;
}
#endif
struct nfs_server *nfs3_create_server(struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
struct nfs_server *server = nfs_create_server(mount_info, nfs_mod);
/* Create a client RPC handle for the NFS v3 ACL management interface */
if (!IS_ERR(server))
nfs_init_server_aclclient(server);
return server;
}
struct nfs_server *nfs3_clone_server(struct nfs_server *source,
struct nfs_fh *fh,
struct nfs_fattr *fattr,
rpc_authflavor_t flavor)
{
struct nfs_server *server = nfs_clone_server(source, fh, fattr, flavor);
if (!IS_ERR(server) && !IS_ERR(source->client_acl))
nfs_init_server_aclclient(server);
return server;
}

3
fs/nfs/nfs3proc.c
View file

@ -925,6 +925,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.file_ops = &nfs_file_operations,
.getroot = nfs3_proc_get_root,
.submount = nfs_submount,
.try_mount = nfs_try_mount,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
@ -968,4 +969,6 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.alloc_client = nfs_alloc_client,
.init_client = nfs_init_client,
.free_client = nfs_free_client,
.create_server = nfs3_create_server,
.clone_server = nfs3_clone_server,
};

31
fs/nfs/nfs3super.c Normal file
View file

@ -0,0 +1,31 @@
/*
* Copyright (c) 2012 Netapp, Inc. All rights reserved.
*/
#include <linux/module.h>
#include <linux/nfs_fs.h>
#include "internal.h"
#include "nfs.h"
static struct nfs_subversion nfs_v3 = {
.owner = THIS_MODULE,
.nfs_fs = &nfs_fs_type,
.rpc_vers = &nfs_version3,
.rpc_ops = &nfs_v3_clientops,
.sops = &nfs_sops,
};
static int __init init_nfs_v3(void)
{
register_nfs_version(&nfs_v3);
return 0;
}
static void __exit exit_nfs_v3(void)
{
unregister_nfs_version(&nfs_v3);
}
MODULE_LICENSE("GPL");
module_init(init_nfs_v3);
module_exit(exit_nfs_v3);

13
fs/nfs/nfs4_fs.h
View file

@ -9,7 +9,7 @@
#ifndef __LINUX_FS_NFS_NFS4_FS_H
#define __LINUX_FS_NFS_NFS4_FS_H
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
struct idmap;
@ -205,9 +205,6 @@ extern const struct dentry_operations nfs4_dentry_operations;
int nfs_atomic_open(struct inode *, struct dentry *, struct file *,
unsigned, umode_t, int *);
/* write.c */
int nfs4_write_inode(struct inode *, struct writeback_control *);
/* nfs4namespace.c */
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);
@ -366,9 +363,11 @@ extern const nfs4_stateid zero_stateid;
/* nfs4super.c */
struct nfs_mount_info;
struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *);
int init_nfs_v4(void);
void exit_nfs_v4(void);
extern struct nfs_subversion nfs_v4;
struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *);
extern bool nfs4_disable_idmapping;
extern unsigned short max_session_slots;
extern unsigned short send_implementation_id;
/* nfs4sysctl.c */
#ifdef CONFIG_SYSCTL

23
fs/nfs/nfs4client.c
View file

@ -17,11 +17,6 @@
#define NFSDBG_FACILITY NFSDBG_CLIENT
/*
* Turn off NFSv4 uid/gid mapping when using AUTH_SYS
*/
static bool nfs4_disable_idmapping = true;
/*
* Get a unique NFSv4.0 callback identifier which will be used
* by the V4.0 callback service to lookup the nfs_client struct
@ -357,7 +352,7 @@ static int nfs4_set_client(struct nfs_server *server,
.hostname = hostname,
.addr = addr,
.addrlen = addrlen,
.rpc_ops = &nfs_v4_clientops,
.nfs_mod = &nfs_v4,
.proto = proto,
.minorversion = minorversion,
.net = net,
@ -411,7 +406,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
struct nfs_client_initdata cl_init = {
.addr = ds_addr,
.addrlen = ds_addrlen,
.rpc_ops = &nfs_v4_clientops,
.nfs_mod = &nfs_v4,
.proto = ds_proto,
.minorversion = mds_clp->cl_minorversion,
.net = mds_clp->cl_net,
@ -574,8 +569,10 @@ static int nfs4_init_server(struct nfs_server *server,
* Create a version 4 volume record
* - keyed on server and FSID
*/
struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
struct nfs_fh *mntfh)
/*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
struct nfs_fh *mntfh)*/
struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
struct nfs_server *server;
int error;
@ -587,11 +584,11 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
return ERR_PTR(-ENOMEM);
/* set up the general RPC client */
error = nfs4_init_server(server, data);
error = nfs4_init_server(server, mount_info->parsed);
if (error < 0)
goto error;
error = nfs4_server_common_setup(server, mntfh);
error = nfs4_server_common_setup(server, mount_info->mntfh);
if (error < 0)
goto error;
@ -657,7 +654,3 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
return ERR_PTR(error);
}
module_param(nfs4_disable_idmapping, bool, 0644);
MODULE_PARM_DESC(nfs4_disable_idmapping,
"Turn off NFSv4 idmapping when using 'sec=sys'");

9
fs/nfs/nfs4proc.c
View file

@ -72,8 +72,6 @@
#define NFS4_MAX_LOOP_ON_RECOVER (10)
static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE;
struct nfs4_opendata;
static int _nfs4_proc_open(struct nfs4_opendata *data);
static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
@ -6870,6 +6868,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.file_ops = &nfs4_file_operations,
.getroot = nfs4_proc_get_root,
.submount = nfs4_submount,
.try_mount = nfs4_try_mount,
.getattr = nfs4_proc_getattr,
.setattr = nfs4_proc_setattr,
.lookup = nfs4_proc_lookup,
@ -6915,6 +6914,8 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.alloc_client = nfs4_alloc_client,
.init_client = nfs4_init_client,
.free_client = nfs4_free_client,
.create_server = nfs4_create_server,
.clone_server = nfs_clone_server,
};
static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
@ -6929,10 +6930,6 @@ const struct xattr_handler *nfs4_xattr_handlers[] = {
NULL
};
module_param(max_session_slots, ushort, 0644);
MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 "
"requests the client will negotiate");
/*
* Local variables:
* c-basic-offset: 8

110
fs/nfs/nfs4super.c
View file

@ -6,15 +6,18 @@
#include <linux/nfs_idmap.h>
#include <linux/nfs4_mount.h>
#include <linux/nfs_fs.h>
#include "delegation.h"
#include "internal.h"
#include "nfs4_fs.h"
#include "pnfs.h"
#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc);
static void nfs4_evict_inode(struct inode *inode);
static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type,
@ -36,14 +39,6 @@ static struct file_system_type nfs4_remote_fs_type = {
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
struct file_system_type nfs4_xdev_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
.mount = nfs4_xdev_mount,
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
static struct file_system_type nfs4_remote_referral_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
@ -75,21 +70,48 @@ static const struct super_operations nfs4_sops = {
.remount_fs = nfs_remount,
};
/*
* Set up an NFS4 superblock
*/
static void nfs4_fill_super(struct super_block *sb,
struct nfs_mount_info *mount_info)
struct nfs_subversion nfs_v4 = {
.owner = THIS_MODULE,
.nfs_fs = &nfs4_fs_type,
.rpc_vers = &nfs_version4,
.rpc_ops = &nfs_v4_clientops,
.sops = &nfs4_sops,
.xattr = nfs4_xattr_handlers,
};
static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
{
sb->s_time_gran = 1;
sb->s_op = &nfs4_sops;
/*
* The VFS shouldn't apply the umask to mode bits. We will do
* so ourselves when necessary.
*/
sb->s_flags |= MS_POSIXACL;
sb->s_xattr = nfs4_xattr_handlers;
nfs_initialise_sb(sb);
int ret = nfs_write_inode(inode, wbc);
if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
int status;
bool sync = true;
if (wbc->sync_mode == WB_SYNC_NONE)
sync = false;
status = pnfs_layoutcommit_inode(inode, sync);
if (status < 0)
return status;
}
return ret;
}
/*
* Clean out any remaining NFSv4 state that might be left over due
* to open() calls that passed nfs_atomic_lookup, but failed to call
* nfs_open().
*/
static void nfs4_evict_inode(struct inode *inode)
{
truncate_inode_pages(&inode->i_data, 0);
clear_inode(inode);
pnfs_return_layout(inode);
pnfs_destroy_layout(NFS_I(inode));
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation_noreclaim(inode);
/* First call standard NFS clear_inode() code */
nfs_clear_inode(inode);
}
/*
@ -103,17 +125,16 @@ nfs4_remote_mount(struct file_system_type *fs_type, int flags,
struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
mount_info->fill_super = nfs4_fill_super;
mount_info->set_security = nfs_set_sb_security;
/* Get a volume representation */
server = nfs4_create_server(mount_info->parsed, mount_info->mntfh);
server = nfs4_create_server(mount_info, &nfs_v4);
if (IS_ERR(server)) {
mntroot = ERR_CAST(server);
goto out;
}
mntroot = nfs_fs_mount_common(fs_type, server, flags, dev_name, mount_info);
mntroot = nfs_fs_mount_common(server, flags, dev_name, mount_info, &nfs_v4);
out:
return mntroot;
@ -228,7 +249,8 @@ static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt,
}
struct dentry *nfs4_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
char *export_path;
struct vfsmount *root_mnt;
@ -237,8 +259,6 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
mount_info->fill_super = nfs4_fill_super;
export_path = data->nfs_server.export_path;
data->nfs_server.export_path = "/";
root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type, flags, mount_info,
@ -253,27 +273,12 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
return res;
}
/*
* Clone an NFS4 server record on xdev traversal (FSID-change)
*/
static struct dentry *
nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
.fill_super = nfs_clone_super,
.set_security = nfs_clone_sb_security,
.cloned = raw_data,
};
return nfs_xdev_mount_common(&nfs4_fs_type, flags, dev_name, &mount_info);
}
static struct dentry *
nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
.fill_super = nfs4_fill_super,
.fill_super = nfs_fill_super,
.set_security = nfs_clone_sb_security,
.cloned = raw_data,
};
@ -293,7 +298,7 @@ nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
goto out;
}
mntroot = nfs_fs_mount_common(&nfs4_fs_type, server, flags, dev_name, &mount_info);
mntroot = nfs_fs_mount_common(server, flags, dev_name, &mount_info, &nfs_v4);
out:
nfs_free_fhandle(mount_info.mntfh);
return mntroot;
@ -327,7 +332,7 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
}
int __init init_nfs_v4(void)
static int __init init_nfs_v4(void)
{
int err;
@ -343,6 +348,7 @@ int __init init_nfs_v4(void)
if (err < 0)
goto out2;
register_nfs_version(&nfs_v4);
return 0;
out2:
nfs4_unregister_sysctl();
@ -352,9 +358,15 @@ int __init init_nfs_v4(void)
return err;
}
void exit_nfs_v4(void)
static void __exit exit_nfs_v4(void)
{
unregister_nfs_version(&nfs_v4);
unregister_filesystem(&nfs4_fs_type);
nfs4_unregister_sysctl();
nfs_idmap_quit();
}
MODULE_LICENSE("GPL");
module_init(init_nfs_v4);
module_exit(exit_nfs_v4);

6
fs/nfs/nfs4xdr.c
View file

@ -852,12 +852,6 @@ const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
XDR_UNIT);
#endif /* CONFIG_NFS_V4_1 */
static unsigned short send_implementation_id = 1;
module_param(send_implementation_id, ushort, 0644);
MODULE_PARM_DESC(send_implementation_id,
"Send implementation ID with NFSv4.1 exchange_id");
static const umode_t nfs_type2fmt[] = {
[NF4BAD] = 0,
[NF4REG] = S_IFREG,

4
fs/nfs/pagelist.c
View file

@ -54,6 +54,7 @@ void nfs_pgheader_init(struct nfs_pageio_descriptor *desc,
if (hdr->completion_ops->init_hdr)
hdr->completion_ops->init_hdr(hdr);
}
EXPORT_SYMBOL_GPL(nfs_pgheader_init);
void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
{
@ -268,6 +269,7 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
desc->pg_lseg = NULL;
desc->pg_dreq = NULL;
}
EXPORT_SYMBOL_GPL(nfs_pageio_init);
/**
* nfs_can_coalesce_requests - test two requests for compatibility
@ -409,6 +411,7 @@ int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc,
} while (ret);
return ret;
}
EXPORT_SYMBOL_GPL(nfs_pageio_add_request);
/**
* nfs_pageio_complete - Complete I/O on an nfs_pageio_descriptor
@ -424,6 +427,7 @@ void nfs_pageio_complete(struct nfs_pageio_descriptor *desc)
break;
}
}
EXPORT_SYMBOL_GPL(nfs_pageio_complete);
/**
* nfs_pageio_cond_complete - Conditional I/O completion

2
fs/nfs/pnfs.c
View file

@ -1407,6 +1407,7 @@ static void pnfs_writehdr_free(struct nfs_pgio_header *hdr)
put_lseg(hdr->lseg);
nfs_writehdr_free(hdr);
}
EXPORT_SYMBOL_GPL(pnfs_writehdr_free);
int
pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
@ -1561,6 +1562,7 @@ static void pnfs_readhdr_free(struct nfs_pgio_header *hdr)
put_lseg(hdr->lseg);
nfs_readhdr_free(hdr);
}
EXPORT_SYMBOL_GPL(pnfs_readhdr_free);
int
pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)

3
fs/nfs/proc.c
View file

@ -774,6 +774,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.file_ops = &nfs_file_operations,
.getroot = nfs_proc_get_root,
.submount = nfs_submount,
.try_mount = nfs_try_mount,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
@ -816,4 +817,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.alloc_client = nfs_alloc_client,
.init_client = nfs_init_client,
.free_client = nfs_free_client,
.create_server = nfs_create_server,
.clone_server = nfs_clone_server,
};

5
fs/nfs/read.c
View file

@ -48,6 +48,7 @@ struct nfs_read_header *nfs_readhdr_alloc(void)
}
return rhdr;
}
EXPORT_SYMBOL_GPL(nfs_readhdr_alloc);
static struct nfs_read_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
@ -80,6 +81,7 @@ void nfs_readhdr_free(struct nfs_pgio_header *hdr)
kmem_cache_free(nfs_rdata_cachep, rhdr);
}
EXPORT_SYMBOL_GPL(nfs_readhdr_free);
void nfs_readdata_release(struct nfs_read_data *rdata)
{
@ -96,6 +98,7 @@ void nfs_readdata_release(struct nfs_read_data *rdata)
if (atomic_dec_and_test(&hdr->refcnt))
hdr->completion_ops->completion(hdr);
}
EXPORT_SYMBOL_GPL(nfs_readdata_release);
static
int nfs_return_empty_page(struct page *page)
@ -113,6 +116,7 @@ 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)
{
@ -397,6 +401,7 @@ int nfs_generic_pagein(struct nfs_pageio_descriptor *desc,
return nfs_pagein_multi(desc, hdr);
return nfs_pagein_one(desc, hdr);
}
EXPORT_SYMBOL_GPL(nfs_generic_pagein);
static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
{

172
fs/nfs/super.c
View file

@ -64,11 +64,12 @@
#include "internal.h"
#include "fscache.h"
#include "pnfs.h"
#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
#define NFS_TEXT_DATA 1
#ifdef CONFIG_NFS_V3
#if IS_ENABLED(CONFIG_NFS_V3)
#define NFS_DEFAULT_VERSION 3
#else
#define NFS_DEFAULT_VERSION 2
@ -281,13 +282,14 @@ static match_table_t nfs_vers_tokens = {
static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static struct file_system_type nfs_fs_type = {
struct file_system_type nfs_fs_type = {
.owner = THIS_MODULE,
.name = "nfs",
.mount = nfs_fs_mount,
.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,
@ -297,7 +299,7 @@ struct file_system_type nfs_xdev_fs_type = {
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
static const struct super_operations nfs_sops = {
const struct super_operations nfs_sops = {
.alloc_inode = nfs_alloc_inode,
.destroy_inode = nfs_destroy_inode,
.write_inode = nfs_write_inode,
@ -311,8 +313,9 @@ static const struct super_operations nfs_sops = {
.show_stats = nfs_show_stats,
.remount_fs = nfs_remount,
};
EXPORT_SYMBOL_GPL(nfs_sops);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *);
static int nfs4_validate_mount_data(void *options,
struct nfs_parsed_mount_data *args, const char *dev_name);
@ -363,6 +366,7 @@ void nfs_sb_active(struct super_block *sb)
if (atomic_inc_return(&server->active) == 1)
atomic_inc(&sb->s_active);
}
EXPORT_SYMBOL_GPL(nfs_sb_active);
void nfs_sb_deactive(struct super_block *sb)
{
@ -371,6 +375,7 @@ void nfs_sb_deactive(struct super_block *sb)
if (atomic_dec_and_test(&server->active))
deactivate_super(sb);
}
EXPORT_SYMBOL_GPL(nfs_sb_deactive);
/*
* Deliver file system statistics to userspace
@ -436,6 +441,7 @@ int nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
dprintk("%s: statfs error = %d\n", __func__, -error);
return error;
}
EXPORT_SYMBOL_GPL(nfs_statfs);
/*
* Map the security flavour number to a name
@ -541,7 +547,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
nfs_show_mountd_netid(m, nfss, showdefaults);
}
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss,
int showdefaults)
{
@ -672,8 +678,9 @@ int nfs_show_options(struct seq_file *m, struct dentry *root)
return 0;
}
EXPORT_SYMBOL_GPL(nfs_show_options);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
#ifdef CONFIG_NFS_V4_1
static void show_sessions(struct seq_file *m, struct nfs_server *server)
{
@ -706,7 +713,7 @@ static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss)
}
}
#else
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
static void show_pnfs(struct seq_file *m, struct nfs_server *server)
{
}
@ -731,12 +738,14 @@ int nfs_show_devname(struct seq_file *m, struct dentry *root)
free_page((unsigned long)page);
return err;
}
EXPORT_SYMBOL_GPL(nfs_show_devname);
int nfs_show_path(struct seq_file *m, struct dentry *dentry)
{
seq_puts(m, "/");
return 0;
}
EXPORT_SYMBOL_GPL(nfs_show_path);
/*
* Present statistical information for this VFS mountpoint
@ -771,7 +780,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
seq_printf(m, ",bsize=%u", nfss->bsize);
seq_printf(m, ",namlen=%u", nfss->namelen);
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
if (nfss->nfs_client->rpc_ops->version == 4) {
seq_printf(m, "\n\tnfsv4:\t");
seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
@ -829,6 +838,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
return 0;
}
EXPORT_SYMBOL_GPL(nfs_show_stats);
/*
* Begin unmount by attempting to remove all automounted mountpoints we added
@ -848,6 +858,7 @@ void nfs_umount_begin(struct super_block *sb)
if (!IS_ERR(rpc))
rpc_killall_tasks(rpc);
}
EXPORT_SYMBOL_GPL(nfs_umount_begin);
static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
{
@ -1649,8 +1660,9 @@ static int nfs_request_mount(struct nfs_parsed_mount_data *args,
return nfs_walk_authlist(args, &request);
}
static struct dentry *nfs_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
struct dentry *nfs_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
int status;
struct nfs_server *server;
@ -1662,12 +1674,13 @@ static struct dentry *nfs_try_mount(int flags, const char *dev_name,
}
/* Get a volume representation */
server = nfs_create_server(mount_info->parsed, mount_info->mntfh);
server = nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
if (IS_ERR(server))
return ERR_CAST(server);
return nfs_fs_mount_common(&nfs_fs_type, server, flags, dev_name, mount_info);
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".
@ -1871,7 +1884,7 @@ static int nfs23_validate_mount_data(void *options,
return NFS_TEXT_DATA;
}
#ifndef CONFIG_NFS_V3
#if !IS_ENABLED(CONFIG_NFS_V3)
if (args->version == 3)
goto out_v3_not_compiled;
#endif /* !CONFIG_NFS_V3 */
@ -1891,7 +1904,7 @@ static int nfs23_validate_mount_data(void *options,
dfprintk(MOUNT, "NFS: nfs_mount_data version supports only AUTH_SYS\n");
return -EINVAL;
#ifndef CONFIG_NFS_V3
#if !IS_ENABLED(CONFIG_NFS_V3)
out_v3_not_compiled:
dfprintk(MOUNT, "NFS: NFSv3 is not compiled into kernel\n");
return -EPROTONOSUPPORT;
@ -1910,7 +1923,7 @@ static int nfs23_validate_mount_data(void *options,
return -EINVAL;
}
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
static int nfs_validate_mount_data(struct file_system_type *fs_type,
void *options,
struct nfs_parsed_mount_data *args,
@ -1948,7 +1961,7 @@ static int nfs_validate_text_mount_data(void *options,
goto out_no_address;
if (args->version == 4) {
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
port = NFS_PORT;
max_namelen = NFS4_MAXNAMLEN;
max_pathlen = NFS4_MAXPATHLEN;
@ -1971,7 +1984,7 @@ static int nfs_validate_text_mount_data(void *options,
&args->nfs_server.export_path,
max_pathlen);
#ifndef CONFIG_NFS_V4
#if !IS_ENABLED(CONFIG_NFS_V4)
out_v4_not_compiled:
dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n");
return -EPROTONOSUPPORT;
@ -2070,6 +2083,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
kfree(data);
return error;
}
EXPORT_SYMBOL_GPL(nfs_remount);
/*
* Initialise the common bits of the superblock
@ -2103,10 +2117,12 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
sb->s_blocksize_bits = 0;
sb->s_blocksize = 0;
if (data->bsize)
sb->s_xattr = server->nfs_client->cl_nfs_mod->xattr;
sb->s_op = server->nfs_client->cl_nfs_mod->sops;
if (data && data->bsize)
sb->s_blocksize = nfs_block_size(data->bsize, &sb->s_blocksize_bits);
if (server->nfs_client->rpc_ops->version == 3) {
if (server->nfs_client->rpc_ops->version != 2) {
/* The VFS shouldn't apply the umask to mode bits. We will do
* so ourselves when necessary.
*/
@ -2114,9 +2130,9 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
sb->s_time_gran = 1;
}
sb->s_op = &nfs_sops;
nfs_initialise_sb(sb);
}
EXPORT_SYMBOL_GPL(nfs_fill_super);
/*
* Finish setting up a cloned NFS2/3/4 superblock
@ -2286,6 +2302,7 @@ int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot,
{
return security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts);
}
EXPORT_SYMBOL_GPL(nfs_set_sb_security);
int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
struct nfs_mount_info *mount_info)
@ -2296,11 +2313,12 @@ int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
return -ESTALE;
return 0;
}
EXPORT_SYMBOL_GPL(nfs_clone_sb_security);
struct dentry *nfs_fs_mount_common(struct file_system_type *fs_type,
struct nfs_server *server,
struct dentry *nfs_fs_mount_common(struct nfs_server *server,
int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
struct super_block *s;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
@ -2319,7 +2337,7 @@ struct dentry *nfs_fs_mount_common(struct file_system_type *fs_type,
sb_mntdata.mntflags |= MS_SYNCHRONOUS;
/* Get a superblock - note that we may end up sharing one that already exists */
s = sget(fs_type, compare_super, nfs_set_super, flags, &sb_mntdata);
s = sget(nfs_mod->nfs_fs, compare_super, nfs_set_super, flags, &sb_mntdata);
if (IS_ERR(s)) {
mntroot = ERR_CAST(s);
goto out_err_nosb;
@ -2369,6 +2387,7 @@ struct dentry *nfs_fs_mount_common(struct file_system_type *fs_type,
deactivate_locked_super(s);
goto out;
}
EXPORT_SYMBOL_GPL(nfs_fs_mount_common);
struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
@ -2378,6 +2397,7 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
.set_security = nfs_set_sb_security,
};
struct dentry *mntroot = ERR_PTR(-ENOMEM);
struct nfs_subversion *nfs_mod;
int error;
mount_info.parsed = nfs_alloc_parsed_mount_data();
@ -2394,18 +2414,21 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
goto out;
}
#ifdef CONFIG_NFS_V4
if (mount_info.parsed->version == 4)
mntroot = nfs4_try_mount(flags, dev_name, &mount_info);
else
#endif /* CONFIG_NFS_V4 */
mntroot = nfs_try_mount(flags, dev_name, &mount_info);
nfs_mod = get_nfs_version(mount_info.parsed->version);
if (IS_ERR(nfs_mod)) {
mntroot = ERR_CAST(nfs_mod);
goto out;
}
mntroot = nfs_mod->rpc_ops->try_mount(flags, dev_name, &mount_info, nfs_mod);
put_nfs_version(nfs_mod);
out:
nfs_free_parsed_mount_data(mount_info.parsed);
nfs_free_fhandle(mount_info.mntfh);
return mntroot;
}
EXPORT_SYMBOL_GPL(nfs_fs_mount);
/*
* Ensure that we unregister the bdi before kill_anon_super
@ -2417,6 +2440,7 @@ void nfs_put_super(struct super_block *s)
bdi_unregister(&server->backing_dev_info);
}
EXPORT_SYMBOL_GPL(nfs_put_super);
/*
* Destroy an NFS2/3 superblock
@ -2429,31 +2453,38 @@ void nfs_kill_super(struct super_block *s)
nfs_fscache_release_super_cookie(s);
nfs_free_server(server);
}
EXPORT_SYMBOL_GPL(nfs_kill_super);
/*
* Clone an NFS2/3/4 server record on xdev traversal (FSID-change)
*/
struct dentry *
nfs_xdev_mount_common(struct file_system_type *fs_type, int flags,
const char *dev_name, struct nfs_mount_info *mount_info)
nfs_xdev_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
struct nfs_clone_mount *data = mount_info->cloned;
struct nfs_clone_mount *data = raw_data;
struct nfs_mount_info mount_info = {
.fill_super = nfs_clone_super,
.set_security = nfs_clone_sb_security,
.cloned = data,
};
struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod;
int error;
dprintk("--> nfs_xdev_mount_common()\n");
mount_info->mntfh = data->fh;
mount_info.mntfh = mount_info.cloned->fh;
/* create a new volume representation */
server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
if (IS_ERR(server)) {
error = PTR_ERR(server);
goto out_err;
}
mntroot = nfs_fs_mount_common(fs_type, server, flags, dev_name, mount_info);
mntroot = nfs_fs_mount_common(server, flags, dev_name, &mount_info, nfs_mod);
dprintk("<-- nfs_xdev_mount_common() = 0\n");
out:
return mntroot;
@ -2463,22 +2494,7 @@ nfs_xdev_mount_common(struct file_system_type *fs_type, int flags,
goto out;
}
/*
* Clone an NFS2/3 server record on xdev traversal (FSID-change)
*/
static struct dentry *
nfs_xdev_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
.fill_super = nfs_clone_super,
.set_security = nfs_clone_sb_security,
.cloned = raw_data,
};
return nfs_xdev_mount_common(&nfs_fs_type, flags, dev_name, &mount_info);
}
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
{
@ -2577,4 +2593,56 @@ static int nfs4_validate_mount_data(void *options,
return -EINVAL;
}
/*
* NFS v4 module parameters need to stay in the
* NFS client for backwards compatibility
*/
unsigned int nfs_callback_set_tcpport;
unsigned short nfs_callback_tcpport;
/* Default cache timeout is 10 minutes */
unsigned int nfs_idmap_cache_timeout = 600;
/* Turn off NFSv4 uid/gid mapping when using AUTH_SYS */
bool nfs4_disable_idmapping = true;
unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE;
unsigned short send_implementation_id = 1;
EXPORT_SYMBOL_GPL(nfs_callback_set_tcpport);
EXPORT_SYMBOL_GPL(nfs_callback_tcpport);
EXPORT_SYMBOL_GPL(nfs_idmap_cache_timeout);
EXPORT_SYMBOL_GPL(nfs4_disable_idmapping);
EXPORT_SYMBOL_GPL(max_session_slots);
EXPORT_SYMBOL_GPL(send_implementation_id);
#define NFS_CALLBACK_MAXPORTNR (65535U)
static int param_set_portnr(const char *val, const struct kernel_param *kp)
{
unsigned long num;
int ret;
if (!val)
return -EINVAL;
ret = strict_strtoul(val, 0, &num);
if (ret == -EINVAL || num > NFS_CALLBACK_MAXPORTNR)
return -EINVAL;
*((unsigned int *)kp->arg) = num;
return 0;
}
static struct kernel_param_ops param_ops_portnr = {
.set = param_set_portnr,
.get = param_get_uint,
};
#define param_check_portnr(name, p) __param_check(name, p, unsigned int);
module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644);
module_param(nfs_idmap_cache_timeout, int, 0644);
module_param(nfs4_disable_idmapping, bool, 0644);
MODULE_PARM_DESC(nfs4_disable_idmapping,
"Turn off NFSv4 idmapping when using 'sec=sys'");
module_param(max_session_slots, ushort, 0644);
MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 "
"requests the client will negotiate");
module_param(send_implementation_id, ushort, 0644);
MODULE_PARM_DESC(send_implementation_id,
"Send implementation ID with NFSv4.1 exchange_id");
#endif /* CONFIG_NFS_V4 */

35
fs/nfs/write.c
View file

@ -84,6 +84,7 @@ struct nfs_write_header *nfs_writehdr_alloc(void)
}
return p;
}
EXPORT_SYMBOL_GPL(nfs_writehdr_alloc);
static struct nfs_write_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
@ -115,6 +116,7 @@ void nfs_writehdr_free(struct nfs_pgio_header *hdr)
struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header);
mempool_free(whdr, nfs_wdata_mempool);
}
EXPORT_SYMBOL_GPL(nfs_writehdr_free);
void nfs_writedata_release(struct nfs_write_data *wdata)
{
@ -131,6 +133,7 @@ void nfs_writedata_release(struct nfs_write_data *wdata)
if (atomic_dec_and_test(&hdr->refcnt))
hdr->completion_ops->completion(hdr);
}
EXPORT_SYMBOL_GPL(nfs_writedata_release);
static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error)
{
@ -446,7 +449,7 @@ nfs_mark_request_dirty(struct nfs_page *req)
__set_page_dirty_nobuffers(req->wb_page);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
/**
* nfs_request_add_commit_list - add request to a commit list
* @req: pointer to a struct nfs_page
@ -636,7 +639,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static unsigned long
nfs_reqs_to_commit(struct nfs_commit_info *cinfo)
{
@ -1173,6 +1176,7 @@ int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
return nfs_flush_multi(desc, hdr);
return nfs_flush_one(desc, hdr);
}
EXPORT_SYMBOL_GPL(nfs_generic_flush);
static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
{
@ -1210,6 +1214,7 @@ 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)
{
@ -1297,7 +1302,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
return;
nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, resp->count);
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
if (resp->verf->committed < argp->stable && task->tk_status >= 0) {
/* We tried a write call, but the server did not
* commit data to stable storage even though we
@ -1357,7 +1362,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
{
int ret;
@ -1673,26 +1678,7 @@ int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
return nfs_commit_unstable_pages(inode, wbc);
}
#ifdef CONFIG_NFS_V4
int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int ret = nfs_write_inode(inode, wbc);
if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
int status;
bool sync = true;
if (wbc->sync_mode == WB_SYNC_NONE)
sync = false;
status = pnfs_layoutcommit_inode(inode, sync);
if (status < 0)
return status;
}
return ret;
}
#endif
EXPORT_SYMBOL_GPL(nfs_write_inode);
/*
* flush the inode to disk.
@ -1708,6 +1694,7 @@ 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)
{

6
include/linux/nfs_fs.h
View file

@ -191,7 +191,7 @@ struct nfs_inode {
struct hlist_head silly_list;
wait_queue_head_t waitqueue;
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
struct nfs4_cached_acl *nfs4_acl;
/* NFSv4 state */
struct list_head open_states;
@ -428,7 +428,7 @@ extern __be32 root_nfs_parse_addr(char *name); /*__init*/
* linux/fs/nfs/file.c
*/
extern const struct file_operations nfs_file_operations;
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
extern const struct file_operations nfs4_file_operations;
#endif /* CONFIG_NFS_V4 */
extern const struct address_space_operations nfs_file_aops;
@ -538,7 +538,7 @@ extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
extern int nfs_wb_all(struct inode *inode);
extern int nfs_wb_page(struct inode *inode, struct page* page);
extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
extern int nfs_commit_inode(struct inode *, int);
extern struct nfs_commit_data *nfs_commitdata_alloc(void);
extern void nfs_commit_free(struct nfs_commit_data *data);

7
include/linux/nfs_fs_sb.h
View file

@ -48,11 +48,12 @@ struct nfs_client {
struct rpc_clnt * cl_rpcclient;
const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
int cl_proto; /* Network transport protocol */
struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */
u32 cl_minorversion;/* NFSv4 minorversion */
struct rpc_cred *cl_machine_cred;
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
u64 cl_clientid; /* constant */
nfs4_verifier cl_confirm; /* Clientid verifier */
unsigned long cl_state;
@ -137,7 +138,7 @@ struct nfs_server {
#endif
u32 pnfs_blksize; /* layout_blksize attr */
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
u32 attr_bitmask[3];/* V4 bitmask representing the set
of attributes supported on this
filesystem */
@ -200,7 +201,7 @@ struct nfs_server {
#define NFS4_MAX_SLOT_TABLE (256U)
#define NFS4_NO_SLOT ((u32)-1)
#if defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V4)
/* Sessions */
#define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long))

2
include/linux/nfs_idmap.h
View file

@ -69,7 +69,7 @@ struct nfs_server;
struct nfs_fattr;
struct nfs4_string;
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
int nfs_idmap_init(void);
void nfs_idmap_quit(void);
#else

9
include/linux/nfs_xdr.h
View file

@ -824,7 +824,7 @@ struct nfs3_getaclres {
struct posix_acl * acl_default;
};
#ifdef CONFIG_NFS_V4
#if IS_ENABLED(CONFIG_NFS_V4)
typedef u64 clientid4;
@ -1353,6 +1353,8 @@ struct nfs_renamedata {
struct nfs_access_entry;
struct nfs_client;
struct rpc_timeout;
struct nfs_subversion;
struct nfs_mount_info;
struct nfs_client_initdata;
struct nfs_pageio_descriptor;
@ -1370,6 +1372,8 @@ struct nfs_rpc_ops {
struct nfs_fsinfo *);
struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
struct nfs_fh *, struct nfs_fattr *);
struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
struct nfs_subversion *);
int (*getattr) (struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *);
int (*setattr) (struct dentry *, struct nfs_fattr *,
@ -1435,6 +1439,9 @@ struct nfs_rpc_ops {
(*init_client) (struct nfs_client *, const struct rpc_timeout *,
const char *, rpc_authflavor_t);
void (*free_client) (struct nfs_client *);
struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *, rpc_authflavor_t);
};
/*

4
net/sunrpc/rpcb_clnt.c
View file

@ -251,7 +251,7 @@ static int rpcb_create_local_unix(struct net *net)
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create AF_LOCAL rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
result = -PTR_ERR(clnt);
result = PTR_ERR(clnt);
goto out;
}
@ -298,7 +298,7 @@ static int rpcb_create_local_net(struct net *net)
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create local rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
result = -PTR_ERR(clnt);
result = PTR_ERR(clnt);
goto out;
}

7
net/sunrpc/sched.c
View file

@ -300,8 +300,9 @@ EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
/*
* Make an RPC task runnable.
*
* Note: If the task is ASYNC, this must be called with
* the spinlock held to protect the wait queue operation.
* Note: If the task is ASYNC, and is being made runnable after sitting on an
* rpc_wait_queue, this must be called with the queue spinlock held to protect
* the wait queue operation.
*/
static void rpc_make_runnable(struct rpc_task *task)
{
@ -790,7 +791,9 @@ void rpc_execute(struct rpc_task *task)
static void rpc_async_schedule(struct work_struct *work)
{
current->flags |= PF_FSTRANS;
__rpc_execute(container_of(work, struct rpc_task, u.tk_work));
current->flags &= ~PF_FSTRANS;
}
/**

3
net/sunrpc/xprtrdma/transport.c
View file

@ -200,6 +200,7 @@ xprt_rdma_connect_worker(struct work_struct *work)
int rc = 0;
if (!xprt->shutdown) {
current->flags |= PF_FSTRANS;
xprt_clear_connected(xprt);
dprintk("RPC: %s: %sconnect\n", __func__,
@ -212,10 +213,10 @@ xprt_rdma_connect_worker(struct work_struct *work)
out:
xprt_wake_pending_tasks(xprt, rc);
out_clear:
dprintk("RPC: %s: exit\n", __func__);
xprt_clear_connecting(xprt);
current->flags &= ~PF_FSTRANS;
}
/*

10
net/sunrpc/xprtsock.c
View file

@ -1892,6 +1892,8 @@ static void xs_local_setup_socket(struct work_struct *work)
if (xprt->shutdown)
goto out;
current->flags |= PF_FSTRANS;
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
status = __sock_create(xprt->xprt_net, AF_LOCAL,
SOCK_STREAM, 0, &sock, 1);
@ -1925,6 +1927,7 @@ static void xs_local_setup_socket(struct work_struct *work)
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
current->flags &= ~PF_FSTRANS;
}
static void xs_udp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
@ -1967,6 +1970,8 @@ static void xs_udp_setup_socket(struct work_struct *work)
if (xprt->shutdown)
goto out;
current->flags |= PF_FSTRANS;
/* Start by resetting any existing state */
xs_reset_transport(transport);
sock = xs_create_sock(xprt, transport,
@ -1985,6 +1990,7 @@ static void xs_udp_setup_socket(struct work_struct *work)
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
current->flags &= ~PF_FSTRANS;
}
/*
@ -2110,6 +2116,8 @@ static void xs_tcp_setup_socket(struct work_struct *work)
if (xprt->shutdown)
goto out;
current->flags |= PF_FSTRANS;
if (!sock) {
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
sock = xs_create_sock(xprt, transport,
@ -2159,6 +2167,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
case -EINPROGRESS:
case -EALREADY:
xprt_clear_connecting(xprt);
current->flags &= ~PF_FSTRANS;
return;
case -EINVAL:
/* Happens, for instance, if the user specified a link
@ -2171,6 +2180,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
current->flags &= ~PF_FSTRANS;
}
/**