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authorLinus Torvalds <torvalds@linux-foundation.org>2012-06-01 05:18:11 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-06-01 05:18:11 +0400
commita00b6151a2ae4c52576c35d3998e144a993d50b8 (patch)
treefc312be05c4deb4dead7a6afa09e88017d3a0146 /fs
parent08615d7d85e5aa02c05bf6c4dde87d940e7f85f6 (diff)
parentb108fe6b08f3f61c2c465649b20b7d4b4c185728 (diff)
downloadlinux-a00b6151a2ae4c52576c35d3998e144a993d50b8.tar.xz
Merge branch 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linux
Pull nfsd update from Bruce Fields. * 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linux: (23 commits) nfsd: trivial: use SEEK_SET instead of 0 in vfs_llseek SUNRPC: split upcall function to extract reusable parts nfsd: allocate id-to-name and name-to-id caches in per-net operations. nfsd: make name-to-id cache allocated per network namespace context nfsd: make id-to-name cache allocated per network namespace context nfsd: pass network context to idmap init/exit functions nfsd: allocate export and expkey caches in per-net operations. nfsd: make expkey cache allocated per network namespace context nfsd: make export cache allocated per network namespace context nfsd: pass pointer to export cache down to stack wherever possible. nfsd: pass network context to export caches init/shutdown routines Lockd: pass network namespace to creation and destruction routines NFSd: remove hard-coded dereferences to name-to-id and id-to-name caches nfsd: pass pointer to expkey cache down to stack wherever possible. nfsd: use hash table from cache detail in nfsd export seq ops nfsd: pass svc_export_cache pointer as private data to "exports" seq file ops nfsd: use exp_put() for svc_export_cache put nfsd: use cache detail pointer from svc_export structure on cache put nfsd: add link to owner cache detail to svc_export structure nfsd: use passed cache_detail pointer expkey_parse() ...
Diffstat (limited to 'fs')
-rw-r--r--fs/lockd/clntlock.c13
-rw-r--r--fs/lockd/svc.c7
-rw-r--r--fs/nfsd/export.c175
-rw-r--r--fs/nfsd/idmap.h8
-rw-r--r--fs/nfsd/netns.h6
-rw-r--r--fs/nfsd/nfs4idmap.c109
-rw-r--r--fs/nfsd/nfs4state.c13
-rw-r--r--fs/nfsd/nfsctl.c55
-rw-r--r--fs/nfsd/nfsfh.c2
-rw-r--r--fs/nfsd/nfssvc.c8
-rw-r--r--fs/nfsd/vfs.c2
11 files changed, 245 insertions, 153 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index ba1dc2eebd1e..ca0a08001449 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -56,7 +56,7 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
u32 nlm_version = (nlm_init->nfs_version == 2) ? 1 : 4;
int status;
- status = lockd_up();
+ status = lockd_up(nlm_init->net);
if (status < 0)
return ERR_PTR(status);
@@ -65,7 +65,7 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
nlm_init->hostname, nlm_init->noresvport,
nlm_init->net);
if (host == NULL) {
- lockd_down();
+ lockd_down(nlm_init->net);
return ERR_PTR(-ENOLCK);
}
@@ -80,8 +80,10 @@ EXPORT_SYMBOL_GPL(nlmclnt_init);
*/
void nlmclnt_done(struct nlm_host *host)
{
+ struct net *net = host->net;
+
nlmclnt_release_host(host);
- lockd_down();
+ lockd_down(net);
}
EXPORT_SYMBOL_GPL(nlmclnt_done);
@@ -220,11 +222,12 @@ reclaimer(void *ptr)
struct nlm_wait *block;
struct file_lock *fl, *next;
u32 nsmstate;
+ struct net *net = host->net;
allow_signal(SIGKILL);
down_write(&host->h_rwsem);
- lockd_up(); /* note: this cannot fail as lockd is already running */
+ lockd_up(net); /* note: this cannot fail as lockd is already running */
dprintk("lockd: reclaiming locks for host %s\n", host->h_name);
@@ -275,6 +278,6 @@ restart:
/* Release host handle after use */
nlmclnt_release_host(host);
- lockd_down();
+ lockd_down(net);
return 0;
}
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index f49b9afc4436..1ead0750cdbb 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -295,11 +295,10 @@ static void lockd_down_net(struct net *net)
/*
* Bring up the lockd process if it's not already up.
*/
-int lockd_up(void)
+int lockd_up(struct net *net)
{
struct svc_serv *serv;
int error = 0;
- struct net *net = current->nsproxy->net_ns;
mutex_lock(&nlmsvc_mutex);
/*
@@ -378,12 +377,12 @@ EXPORT_SYMBOL_GPL(lockd_up);
* Decrement the user count and bring down lockd if we're the last.
*/
void
-lockd_down(void)
+lockd_down(struct net *net)
{
mutex_lock(&nlmsvc_mutex);
if (nlmsvc_users) {
if (--nlmsvc_users) {
- lockd_down_net(current->nsproxy->net_ns);
+ lockd_down_net(net);
goto out;
}
} else {
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 8e9689abbc0c..dcb52b884519 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -15,11 +15,13 @@
#include <linux/namei.h>
#include <linux/module.h>
#include <linux/exportfs.h>
+#include <linux/sunrpc/svc_xprt.h>
#include <net/ipv6.h>
#include "nfsd.h"
#include "nfsfh.h"
+#include "netns.h"
#define NFSDDBG_FACILITY NFSDDBG_EXPORT
@@ -38,7 +40,6 @@ typedef struct svc_export svc_export;
#define EXPKEY_HASHBITS 8
#define EXPKEY_HASHMAX (1 << EXPKEY_HASHBITS)
#define EXPKEY_HASHMASK (EXPKEY_HASHMAX -1)
-static struct cache_head *expkey_table[EXPKEY_HASHMAX];
static void expkey_put(struct kref *ref)
{
@@ -71,9 +72,9 @@ static int expkey_upcall(struct cache_detail *cd, struct cache_head *h)
return sunrpc_cache_pipe_upcall(cd, h, expkey_request);
}
-static struct svc_expkey *svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old);
-static struct svc_expkey *svc_expkey_lookup(struct svc_expkey *);
-static struct cache_detail svc_expkey_cache;
+static struct svc_expkey *svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
+ struct svc_expkey *old);
+static struct svc_expkey *svc_expkey_lookup(struct cache_detail *cd, struct svc_expkey *);
static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
{
@@ -131,7 +132,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
key.ek_fsidtype = fsidtype;
memcpy(key.ek_fsid, buf, len);
- ek = svc_expkey_lookup(&key);
+ ek = svc_expkey_lookup(cd, &key);
err = -ENOMEM;
if (!ek)
goto out;
@@ -145,7 +146,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
err = 0;
if (len == 0) {
set_bit(CACHE_NEGATIVE, &key.h.flags);
- ek = svc_expkey_update(&key, ek);
+ ek = svc_expkey_update(cd, &key, ek);
if (!ek)
err = -ENOMEM;
} else {
@@ -155,7 +156,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
dprintk("Found the path %s\n", buf);
- ek = svc_expkey_update(&key, ek);
+ ek = svc_expkey_update(cd, &key, ek);
if (!ek)
err = -ENOMEM;
path_put(&key.ek_path);
@@ -163,7 +164,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
cache_flush();
out:
if (ek)
- cache_put(&ek->h, &svc_expkey_cache);
+ cache_put(&ek->h, cd);
if (dom)
auth_domain_put(dom);
kfree(buf);
@@ -239,10 +240,9 @@ static struct cache_head *expkey_alloc(void)
return NULL;
}
-static struct cache_detail svc_expkey_cache = {
+static struct cache_detail svc_expkey_cache_template = {
.owner = THIS_MODULE,
.hash_size = EXPKEY_HASHMAX,
- .hash_table = expkey_table,
.name = "nfsd.fh",
.cache_put = expkey_put,
.cache_upcall = expkey_upcall,
@@ -268,13 +268,12 @@ svc_expkey_hash(struct svc_expkey *item)
}
static struct svc_expkey *
-svc_expkey_lookup(struct svc_expkey *item)
+svc_expkey_lookup(struct cache_detail *cd, struct svc_expkey *item)
{
struct cache_head *ch;
int hash = svc_expkey_hash(item);
- ch = sunrpc_cache_lookup(&svc_expkey_cache, &item->h,
- hash);
+ ch = sunrpc_cache_lookup(cd, &item->h, hash);
if (ch)
return container_of(ch, struct svc_expkey, h);
else
@@ -282,13 +281,13 @@ svc_expkey_lookup(struct svc_expkey *item)
}
static struct svc_expkey *
-svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old)
+svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
+ struct svc_expkey *old)
{
struct cache_head *ch;
int hash = svc_expkey_hash(new);
- ch = sunrpc_cache_update(&svc_expkey_cache, &new->h,
- &old->h, hash);
+ ch = sunrpc_cache_update(cd, &new->h, &old->h, hash);
if (ch)
return container_of(ch, struct svc_expkey, h);
else
@@ -299,8 +298,6 @@ svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old)
#define EXPORT_HASHBITS 8
#define EXPORT_HASHMAX (1<< EXPORT_HASHBITS)
-static struct cache_head *export_table[EXPORT_HASHMAX];
-
static void nfsd4_fslocs_free(struct nfsd4_fs_locations *fsloc)
{
int i;
@@ -525,6 +522,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
goto out1;
exp.ex_client = dom;
+ exp.cd = cd;
/* expiry */
err = -EINVAL;
@@ -672,6 +670,7 @@ static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
new->ex_fslocs.locations = NULL;
new->ex_fslocs.locations_count = 0;
new->ex_fslocs.migrated = 0;
+ new->cd = item->cd;
}
static void export_update(struct cache_head *cnew, struct cache_head *citem)
@@ -707,10 +706,9 @@ static struct cache_head *svc_export_alloc(void)
return NULL;
}
-struct cache_detail svc_export_cache = {
+struct cache_detail svc_export_cache_template = {
.owner = THIS_MODULE,
.hash_size = EXPORT_HASHMAX,
- .hash_table = export_table,
.name = "nfsd.export",
.cache_put = svc_export_put,
.cache_upcall = svc_export_upcall,
@@ -739,8 +737,7 @@ svc_export_lookup(struct svc_export *exp)
struct cache_head *ch;
int hash = svc_export_hash(exp);
- ch = sunrpc_cache_lookup(&svc_export_cache, &exp->h,
- hash);
+ ch = sunrpc_cache_lookup(exp->cd, &exp->h, hash);
if (ch)
return container_of(ch, struct svc_export, h);
else
@@ -753,9 +750,7 @@ svc_export_update(struct svc_export *new, struct svc_export *old)
struct cache_head *ch;
int hash = svc_export_hash(old);
- ch = sunrpc_cache_update(&svc_export_cache, &new->h,
- &old->h,
- hash);
+ ch = sunrpc_cache_update(old->cd, &new->h, &old->h, hash);
if (ch)
return container_of(ch, struct svc_export, h);
else
@@ -764,7 +759,8 @@ svc_export_update(struct svc_export *new, struct svc_export *old)
static struct svc_expkey *
-exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
+exp_find_key(struct cache_detail *cd, svc_client *clp, int fsid_type,
+ u32 *fsidv, struct cache_req *reqp)
{
struct svc_expkey key, *ek;
int err;
@@ -776,18 +772,18 @@ exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
key.ek_fsidtype = fsid_type;
memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
- ek = svc_expkey_lookup(&key);
+ ek = svc_expkey_lookup(cd, &key);
if (ek == NULL)
return ERR_PTR(-ENOMEM);
- err = cache_check(&svc_expkey_cache, &ek->h, reqp);
+ err = cache_check(cd, &ek->h, reqp);
if (err)
return ERR_PTR(err);
return ek;
}
-static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
- struct cache_req *reqp)
+static svc_export *exp_get_by_name(struct cache_detail *cd, svc_client *clp,
+ const struct path *path, struct cache_req *reqp)
{
struct svc_export *exp, key;
int err;
@@ -797,11 +793,12 @@ static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
key.ex_client = clp;
key.ex_path = *path;
+ key.cd = cd;
exp = svc_export_lookup(&key);
if (exp == NULL)
return ERR_PTR(-ENOMEM);
- err = cache_check(&svc_export_cache, &exp->h, reqp);
+ err = cache_check(cd, &exp->h, reqp);
if (err)
return ERR_PTR(err);
return exp;
@@ -810,16 +807,17 @@ static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
/*
* Find the export entry for a given dentry.
*/
-static struct svc_export *exp_parent(svc_client *clp, struct path *path)
+static struct svc_export *exp_parent(struct cache_detail *cd, svc_client *clp,
+ struct path *path)
{
struct dentry *saved = dget(path->dentry);
- svc_export *exp = exp_get_by_name(clp, path, NULL);
+ svc_export *exp = exp_get_by_name(cd, clp, path, NULL);
while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path->dentry)) {
struct dentry *parent = dget_parent(path->dentry);
dput(path->dentry);
path->dentry = parent;
- exp = exp_get_by_name(clp, path, NULL);
+ exp = exp_get_by_name(cd, clp, path, NULL);
}
dput(path->dentry);
path->dentry = saved;
@@ -834,13 +832,16 @@ static struct svc_export *exp_parent(svc_client *clp, struct path *path)
* since its harder to fool a kernel module than a user space program.
*/
int
-exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
+exp_rootfh(struct net *net, svc_client *clp, char *name,
+ struct knfsd_fh *f, int maxsize)
{
struct svc_export *exp;
struct path path;
struct inode *inode;
struct svc_fh fh;
int err;
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+ struct cache_detail *cd = nn->svc_export_cache;
err = -EPERM;
/* NB: we probably ought to check that it's NUL-terminated */
@@ -853,7 +854,7 @@ exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
name, path.dentry, clp->name,
inode->i_sb->s_id, inode->i_ino);
- exp = exp_parent(clp, &path);
+ exp = exp_parent(cd, clp, &path);
if (IS_ERR(exp)) {
err = PTR_ERR(exp);
goto out;
@@ -875,16 +876,18 @@ out:
return err;
}
-static struct svc_export *exp_find(struct auth_domain *clp, int fsid_type,
+static struct svc_export *exp_find(struct cache_detail *cd,
+ struct auth_domain *clp, int fsid_type,
u32 *fsidv, struct cache_req *reqp)
{
struct svc_export *exp;
- struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp);
+ struct nfsd_net *nn = net_generic(cd->net, nfsd_net_id);
+ struct svc_expkey *ek = exp_find_key(nn->svc_expkey_cache, clp, fsid_type, fsidv, reqp);
if (IS_ERR(ek))
return ERR_CAST(ek);
- exp = exp_get_by_name(clp, &ek->ek_path, reqp);
- cache_put(&ek->h, &svc_expkey_cache);
+ exp = exp_get_by_name(cd, clp, &ek->ek_path, reqp);
+ cache_put(&ek->h, nn->svc_expkey_cache);
if (IS_ERR(exp))
return ERR_CAST(exp);
@@ -926,12 +929,14 @@ struct svc_export *
rqst_exp_get_by_name(struct svc_rqst *rqstp, struct path *path)
{
struct svc_export *gssexp, *exp = ERR_PTR(-ENOENT);
+ struct nfsd_net *nn = net_generic(rqstp->rq_xprt->xpt_net, nfsd_net_id);
+ struct cache_detail *cd = nn->svc_export_cache;
if (rqstp->rq_client == NULL)
goto gss;
/* First try the auth_unix client: */
- exp = exp_get_by_name(rqstp->rq_client, path, &rqstp->rq_chandle);
+ exp = exp_get_by_name(cd, rqstp->rq_client, path, &rqstp->rq_chandle);
if (PTR_ERR(exp) == -ENOENT)
goto gss;
if (IS_ERR(exp))
@@ -943,7 +948,7 @@ gss:
/* Otherwise, try falling back on gss client */
if (rqstp->rq_gssclient == NULL)
return exp;
- gssexp = exp_get_by_name(rqstp->rq_gssclient, path, &rqstp->rq_chandle);
+ gssexp = exp_get_by_name(cd, rqstp->rq_gssclient, path, &rqstp->rq_chandle);
if (PTR_ERR(gssexp) == -ENOENT)
return exp;
if (!IS_ERR(exp))
@@ -955,12 +960,15 @@ struct svc_export *
rqst_exp_find(struct svc_rqst *rqstp, int fsid_type, u32 *fsidv)
{
struct svc_export *gssexp, *exp = ERR_PTR(-ENOENT);
+ struct nfsd_net *nn = net_generic(rqstp->rq_xprt->xpt_net, nfsd_net_id);
+ struct cache_detail *cd = nn->svc_export_cache;
if (rqstp->rq_client == NULL)
goto gss;
/* First try the auth_unix client: */
- exp = exp_find(rqstp->rq_client, fsid_type, fsidv, &rqstp->rq_chandle);
+ exp = exp_find(cd, rqstp->rq_client, fsid_type,
+ fsidv, &rqstp->rq_chandle);
if (PTR_ERR(exp) == -ENOENT)
goto gss;
if (IS_ERR(exp))
@@ -972,7 +980,7 @@ gss:
/* Otherwise, try falling back on gss client */
if (rqstp->rq_gssclient == NULL)
return exp;
- gssexp = exp_find(rqstp->rq_gssclient, fsid_type, fsidv,
+ gssexp = exp_find(cd, rqstp->rq_gssclient, fsid_type, fsidv,
&rqstp->rq_chandle);
if (PTR_ERR(gssexp) == -ENOENT)
return exp;
@@ -1029,13 +1037,15 @@ exp_pseudoroot(struct svc_rqst *rqstp, struct svc_fh *fhp)
/* Iterator */
static void *e_start(struct seq_file *m, loff_t *pos)
- __acquires(svc_export_cache.hash_lock)
+ __acquires(((struct cache_detail *)m->private)->hash_lock)
{
loff_t n = *pos;
unsigned hash, export;
struct cache_head *ch;
-
- read_lock(&svc_export_cache.hash_lock);
+ struct cache_detail *cd = m->private;
+ struct cache_head **export_table = cd->hash_table;
+
+ read_lock(&cd->hash_lock);
if (!n--)
return SEQ_START_TOKEN;
hash = n >> 32;
@@ -1060,6 +1070,8 @@ static void *e_next(struct seq_file *m, void *p, loff_t *pos)
{
struct cache_head *ch = p;
int hash = (*pos >> 32);
+ struct cache_detail *cd = m->private;
+ struct cache_head **export_table = cd->hash_table;
if (p == SEQ_START_TOKEN)
hash = 0;
@@ -1082,9 +1094,11 @@ static void *e_next(struct seq_file *m, void *p, loff_t *pos)
}
static void e_stop(struct seq_file *m, void *p)
- __releases(svc_export_cache.hash_lock)
+ __releases(((struct cache_detail *)m->private)->hash_lock)
{
- read_unlock(&svc_export_cache.hash_lock);
+ struct cache_detail *cd = m->private;
+
+ read_unlock(&cd->hash_lock);
}
static struct flags {
@@ -1195,6 +1209,7 @@ static int e_show(struct seq_file *m, void *p)
{
struct cache_head *cp = p;
struct svc_export *exp = container_of(cp, struct svc_export, h);
+ struct cache_detail *cd = m->private;
if (p == SEQ_START_TOKEN) {
seq_puts(m, "# Version 1.1\n");
@@ -1203,10 +1218,10 @@ static int e_show(struct seq_file *m, void *p)
}
cache_get(&exp->h);
- if (cache_check(&svc_export_cache, &exp->h, NULL))
+ if (cache_check(cd, &exp->h, NULL))
return 0;
- cache_put(&exp->h, &svc_export_cache);
- return svc_export_show(m, &svc_export_cache, cp);
+ exp_put(exp);
+ return svc_export_show(m, cd, cp);
}
const struct seq_operations nfs_exports_op = {
@@ -1216,48 +1231,70 @@ const struct seq_operations nfs_exports_op = {
.show = e_show,
};
-
/*
* Initialize the exports module.
*/
int
-nfsd_export_init(void)
+nfsd_export_init(struct net *net)
{
int rv;
- dprintk("nfsd: initializing export module.\n");
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+
+ dprintk("nfsd: initializing export module (net: %p).\n", net);
- rv = cache_register_net(&svc_export_cache, &init_net);
+ nn->svc_export_cache = cache_create_net(&svc_export_cache_template, net);
+ if (IS_ERR(nn->svc_export_cache))
+ return PTR_ERR(nn->svc_export_cache);
+ rv = cache_register_net(nn->svc_export_cache, net);
if (rv)
- return rv;
- rv = cache_register_net(&svc_expkey_cache, &init_net);
+ goto destroy_export_cache;
+
+ nn->svc_expkey_cache = cache_create_net(&svc_expkey_cache_template, net);
+ if (IS_ERR(nn->svc_expkey_cache)) {
+ rv = PTR_ERR(nn->svc_expkey_cache);
+ goto unregister_export_cache;
+ }
+ rv = cache_register_net(nn->svc_expkey_cache, net);
if (rv)
- cache_unregister_net(&svc_export_cache, &init_net);
- return rv;
+ goto destroy_expkey_cache;
+ return 0;
+destroy_expkey_cache:
+ cache_destroy_net(nn->svc_expkey_cache, net);
+unregister_export_cache:
+ cache_unregister_net(nn->svc_export_cache, net);
+destroy_export_cache:
+ cache_destroy_net(nn->svc_export_cache, net);
+ return rv;
}
/*
* Flush exports table - called when last nfsd thread is killed
*/
void
-nfsd_export_flush(void)
+nfsd_export_flush(struct net *net)
{
- cache_purge(&svc_expkey_cache);
- cache_purge(&svc_export_cache);
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+
+ cache_purge(nn->svc_expkey_cache);
+ cache_purge(nn->svc_export_cache);
}
/*
* Shutdown the exports module.
*/
void
-nfsd_export_shutdown(void)
+nfsd_export_shutdown(struct net *net)
{
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
- dprintk("nfsd: shutting down export module.\n");
+ dprintk("nfsd: shutting down export module (net: %p).\n", net);
- cache_unregister_net(&svc_expkey_cache, &init_net);
- cache_unregister_net(&svc_export_cache, &init_net);
- svcauth_unix_purge();
+ cache_unregister_net(nn->svc_expkey_cache, net);
+ cache_unregister_net(nn->svc_export_cache, net);
+ cache_destroy_net(nn->svc_expkey_cache, net);
+ cache_destroy_net(nn->svc_export_cache, net);
+ svcauth_unix_purge(net);
- dprintk("nfsd: export shutdown complete.\n");
+ dprintk("nfsd: export shutdown complete (net: %p).\n", net);
}
diff --git a/fs/nfsd/idmap.h b/fs/nfsd/idmap.h
index 2f3be1321534..9d513efc01ba 100644
--- a/fs/nfsd/idmap.h
+++ b/fs/nfsd/idmap.h
@@ -42,14 +42,14 @@
#define IDMAP_NAMESZ 128
#ifdef CONFIG_NFSD_V4
-int nfsd_idmap_init(void);
-void nfsd_idmap_shutdown(void);
+int nfsd_idmap_init(struct net *);
+void nfsd_idmap_shutdown(struct net *);
#else
-static inline int nfsd_idmap_init(void)
+static inline int nfsd_idmap_init(struct net *net)
{
return 0;
}
-static inline void nfsd_idmap_shutdown(void)
+static inline void nfsd_idmap_shutdown(struct net *net)
{
}
#endif
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 12e0cff435b4..39365636b244 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -28,6 +28,12 @@ struct cld_net;
struct nfsd_net {
struct cld_net *cld_net;
+
+ struct cache_detail *svc_expkey_cache;
+ struct cache_detail *svc_export_cache;
+
+ struct cache_detail *idtoname_cache;
+ struct cache_detail *nametoid_cache;
};
extern int nfsd_net_id;
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 322d11ce06a4..286a7f8f2024 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -36,9 +36,11 @@
#include <linux/seq_file.h>
#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/sunrpc/svc_xprt.h>
#include <net/net_namespace.h>
#include "idmap.h"
#include "nfsd.h"
+#include "netns.h"
/*
* Turn off idmapping when using AUTH_SYS.
@@ -107,8 +109,6 @@ ent_alloc(void)
* ID -> Name cache
*/
-static struct cache_head *idtoname_table[ENT_HASHMAX];
-
static uint32_t
idtoname_hash(struct ent *ent)
{
@@ -183,13 +183,13 @@ warn_no_idmapd(struct cache_detail *detail, int has_died)
static int idtoname_parse(struct cache_detail *, char *, int);
-static struct ent *idtoname_lookup(struct ent *);
-static struct ent *idtoname_update(struct ent *, struct ent *);
+static struct ent *idtoname_lookup(struct cache_detail *, struct ent *);
+static struct ent *idtoname_update(struct cache_detail *, struct ent *,
+ struct ent *);
-static struct cache_detail idtoname_cache = {
+static struct cache_detail idtoname_cache_template = {
.owner = THIS_MODULE,
.hash_size = ENT_HASHMAX,
- .hash_table = idtoname_table,
.name = "nfs4.idtoname",
.cache_put = ent_put,
.cache_upcall = idtoname_upcall,
@@ -244,7 +244,7 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
goto out;
error = -ENOMEM;
- res = idtoname_lookup(&ent);
+ res = idtoname_lookup(cd, &ent);
if (!res)
goto out;
@@ -260,11 +260,11 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
else
memcpy(ent.name, buf1, sizeof(ent.name));
error = -ENOMEM;
- res = idtoname_update(&ent, res);
+ res = idtoname_update(cd, &ent, res);
if (res == NULL)
goto out;
- cache_put(&res->h, &idtoname_cache);
+ cache_put(&res->h, cd);
error = 0;
out:
@@ -275,10 +275,9 @@ out:
static struct ent *
-idtoname_lookup(struct ent *item)
+idtoname_lookup(struct cache_detail *cd, struct ent *item)
{
- struct cache_head *ch = sunrpc_cache_lookup(&idtoname_cache,
- &item->h,
+ struct cache_head *ch = sunrpc_cache_lookup(cd, &item->h,
idtoname_hash(item));
if (ch)
return container_of(ch, struct ent, h);
@@ -287,10 +286,9 @@ idtoname_lookup(struct ent *item)
}
static struct ent *
-idtoname_update(struct ent *new, struct ent *old)
+idtoname_update(struct cache_detail *cd, struct ent *new, struct ent *old)
{
- struct cache_head *ch = sunrpc_cache_update(&idtoname_cache,
- &new->h, &old->h,
+ struct cache_head *ch = sunrpc_cache_update(cd, &new->h, &old->h,
idtoname_hash(new));
if (ch)
return container_of(ch, struct ent, h);
@@ -303,8 +301,6 @@ idtoname_update(struct ent *new, struct ent *old)
* Name -> ID cache
*/
-static struct cache_head *nametoid_table[ENT_HASHMAX];
-
static inline int
nametoid_hash(struct ent *ent)
{
@@ -359,14 +355,14 @@ nametoid_show(struct seq_file *m, struct cache_detail *cd, struct cache_head *h)
return 0;
}
-static struct ent *nametoid_lookup(struct ent *);
-static struct ent *nametoid_update(struct ent *, struct ent *);
+static struct ent *nametoid_lookup(struct cache_detail *, struct ent *);
+static struct ent *nametoid_update(struct cache_detail *, struct ent *,
+ struct ent *);
static int nametoid_parse(struct cache_detail *, char *, int);
-static struct cache_detail nametoid_cache = {
+static struct cache_detail nametoid_cache_template = {
.owner = THIS_MODULE,
.hash_size = ENT_HASHMAX,
- .hash_table = nametoid_table,
.name = "nfs4.nametoid",
.cache_put = ent_put,
.cache_upcall = nametoid_upcall,
@@ -426,14 +422,14 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen)
set_bit(CACHE_NEGATIVE, &ent.h.flags);
error = -ENOMEM;
- res = nametoid_lookup(&ent);
+ res = nametoid_lookup(cd, &ent);
if (res == NULL)
goto out;
- res = nametoid_update(&ent, res);
+ res = nametoid_update(cd, &ent, res);
if (res == NULL)
goto out;
- cache_put(&res->h, &nametoid_cache);
+ cache_put(&res->h, cd);
error = 0;
out:
kfree(buf1);
@@ -443,10 +439,9 @@ out:
static struct ent *
-nametoid_lookup(struct ent *item)
+nametoid_lookup(struct cache_detail *cd, struct ent *item)
{
- struct cache_head *ch = sunrpc_cache_lookup(&nametoid_cache,
- &item->h,
+ struct cache_head *ch = sunrpc_cache_lookup(cd, &item->h,
nametoid_hash(item));
if (ch)
return container_of(ch, struct ent, h);
@@ -455,10 +450,9 @@ nametoid_lookup(struct ent *item)
}
static struct ent *
-nametoid_update(struct ent *new, struct ent *old)
+nametoid_update(struct cache_detail *cd, struct ent *new, struct ent *old)
{
- struct cache_head *ch = sunrpc_cache_update(&nametoid_cache,
- &new->h, &old->h,
+ struct cache_head *ch = sunrpc_cache_update(cd, &new->h, &old->h,
nametoid_hash(new));
if (ch)
return container_of(ch, struct ent, h);
@@ -471,34 +465,55 @@ nametoid_update(struct ent *new, struct ent *old)
*/
int
-nfsd_idmap_init(void)
+nfsd_idmap_init(struct net *net)
{
int rv;
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
- rv = cache_register_net(&idtoname_cache, &init_net);
+ nn->idtoname_cache = cache_create_net(&idtoname_cache_template, net);
+ if (IS_ERR(nn->idtoname_cache))
+ return PTR_ERR(nn->idtoname_cache);
+ rv = cache_register_net(nn->idtoname_cache, net);
if (rv)
- return rv;
- rv = cache_register_net(&nametoid_cache, &init_net);
+ goto destroy_idtoname_cache;
+ nn->nametoid_cache = cache_create_net(&nametoid_cache_template, net);
+ if (IS_ERR(nn->nametoid_cache)) {
+ rv = PTR_ERR(nn->idtoname_cache);
+ goto unregister_idtoname_cache;
+ }
+ rv = cache_register_net(nn->nametoid_cache, net);
if (rv)
- cache_unregister_net(&idtoname_cache, &init_net);
+ goto destroy_nametoid_cache;
+ return 0;
+
+destroy_nametoid_cache:
+ cache_destroy_net(nn->nametoid_cache, net);
+unregister_idtoname_cache:
+ cache_unregister_net(nn->idtoname_cache, net);
+destroy_idtoname_cache:
+ cache_destroy_net(nn->idtoname_cache, net);
return rv;
}
void
-nfsd_idmap_shutdown(void)
+nfsd_idmap_shutdown(struct net *net)
{
- cache_unregister_net(&idtoname_cache, &init_net);
- cache_unregister_net(&nametoid_cache, &init_net);
+ struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+
+ cache_unregister_net(nn->idtoname_cache, net);
+ cache_unregister_net(nn->nametoid_cache, net);
+ cache_destroy_net(nn->idtoname_cache, net);
+ cache_destroy_net(nn->nametoid_cache, net);
}
static int
idmap_lookup(struct svc_rqst *rqstp,
- struct ent *(*lookup_fn)(struct ent *), struct ent *key,
- struct cache_detail *detail, struct ent **item)
+ struct ent *(*lookup_fn)(struct cache_detail *, struct ent *),
+ struct ent *key, struct cache_detail *detail, struct ent **item)
{
int ret;
- *item = lookup_fn(key);
+ *item = lookup_fn(detail, key);
if (!*item)
return -ENOMEM;
retry:
@@ -506,7 +521,7 @@ idmap_lookup(struct svc_rqst *rqstp,
if (ret == -ETIMEDOUT) {
struct ent *prev_item = *item;
- *item = lookup_fn(key);
+ *item = lookup_fn(detail, key);
if (*item != prev_item)
goto retry;
cache_put(&(*item)->h, detail);
@@ -531,19 +546,20 @@ idmap_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen
.type = type,
};
int ret;
+ struct nfsd_net *nn = net_generic(rqstp->rq_xprt->xpt_net, nfsd_net_id);
if (namelen + 1 > sizeof(key.name))
return nfserr_badowner;
memcpy(key.name, name, namelen);
key.name[namelen] = '\0';
strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
- ret = idmap_lookup(rqstp, nametoid_lookup, &key, &nametoid_cache, &item);
+ ret = idmap_lookup(rqstp, nametoid_lookup, &key, nn->nametoid_cache, &item);
if (ret == -ENOENT)
return nfserr_badowner;
if (ret)
return nfserrno(ret);
*id = item->id;
- cache_put(&item->h, &nametoid_cache);
+ cache_put(&item->h, nn->nametoid_cache);
return 0;
}
@@ -555,9 +571,10 @@ idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
.type = type,
};
int ret;
+ struct nfsd_net *nn = net_generic(rqstp->rq_xprt->xpt_net, nfsd_net_id);
strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
- ret = idmap_lookup(rqstp, idtoname_lookup, &key, &idtoname_cache, &item);
+ ret = idmap_lookup(rqstp, idtoname_lookup, &key, nn->idtoname_cache, &item);
if (ret == -ENOENT)
return sprintf(name, "%u", id);
if (ret)
@@ -565,7 +582,7 @@ idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
ret = strlen(item->name);
BUG_ON(ret > IDMAP_NAMESZ);
memcpy(name, item->name, ret);
- cache_put(&item->h, &idtoname_cache);
+ cache_put(&item->h, nn->idtoname_cache);
return ret;
}
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7f71c69cdcdf..03f82c0bc35d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3155,10 +3155,17 @@ out:
static struct lock_manager nfsd4_manager = {
};
+static bool grace_ended;
+
static void
nfsd4_end_grace(void)
{
+ /* do nothing if grace period already ended */
+ if (grace_ended)
+ return;
+
dprintk("NFSD: end of grace period\n");
+ grace_ended = true;
nfsd4_record_grace_done(&init_net, boot_time);
locks_end_grace(&nfsd4_manager);
/*
@@ -3183,8 +3190,7 @@ nfs4_laundromat(void)
nfs4_lock_state();
dprintk("NFSD: laundromat service - starting\n");
- if (locks_in_grace())
- nfsd4_end_grace();
+ nfsd4_end_grace();
INIT_LIST_HEAD(&reaplist);
spin_lock(&client_lock);
list_for_each_safe(pos, next, &client_lru) {
@@ -4055,7 +4061,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfs4_openowner *open_sop = NULL;
struct nfs4_lockowner *lock_sop = NULL;
struct nfs4_ol_stateid *lock_stp;
- struct nfs4_file *fp;
struct file *filp = NULL;
struct file_lock file_lock;
struct file_lock conflock;
@@ -4123,7 +4128,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
}
lock_sop = lockowner(lock_stp->st_stateowner);
- fp = lock_stp->st_file;
lkflg = setlkflg(lock->lk_type);
status = nfs4_check_openmode(lock_stp, lkflg);
@@ -4715,6 +4719,7 @@ nfs4_state_start(void)
nfsd4_client_tracking_init(&init_net);
boot_time = get_seconds();
locks_start_grace(&nfsd4_manager);
+ grace_ended = false;
printk(KERN_INFO "NFSD: starting %ld-second grace period\n",
nfsd4_grace);
ret = set_callback_cred();
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 2c53be6d3579..72699885ac48 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -127,7 +127,17 @@ static const struct file_operations transaction_ops = {
static int exports_open(struct inode *inode, struct file *file)
{
- return seq_open(file, &nfs_exports_op);
+ int err;
+ struct seq_file *seq;
+ struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
+
+ err = seq_open(file, &nfs_exports_op);
+ if (err)
+ return err;
+
+ seq = file->private_data;
+ seq->private = nn->svc_export_cache;
+ return 0;
}
static const struct file_operations exports_operations = {
@@ -345,7 +355,7 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
if (!dom)
return -ENOMEM;
- len = exp_rootfh(dom, path, &fh, maxsize);
+ len = exp_rootfh(&init_net, dom, path, &fh, maxsize);
auth_domain_put(dom);
if (len)
return len;
@@ -1127,7 +1137,34 @@ static int create_proc_exports_entry(void)
#endif
int nfsd_net_id;
+
+static __net_init int nfsd_init_net(struct net *net)
+{
+ int retval;
+
+ retval = nfsd_export_init(net);
+ if (retval)
+ goto out_export_error;
+ retval = nfsd_idmap_init(net);
+ if (retval)
+ goto out_idmap_error;
+ return 0;
+
+out_idmap_error:
+ nfsd_export_shutdown(net);
+out_export_error:
+ return retval;
+}
+
+static __net_exit void nfsd_exit_net(struct net *net)
+{
+ nfsd_idmap_shutdown(net);
+ nfsd_export_shutdown(net);
+}
+
static struct pernet_operations nfsd_net_ops = {
+ .init = nfsd_init_net,
+ .exit = nfsd_exit_net,
.id = &nfsd_net_id,
.size = sizeof(struct nfsd_net),
};
@@ -1154,16 +1191,10 @@ static int __init init_nfsd(void)
retval = nfsd_reply_cache_init();
if (retval)
goto out_free_stat;
- retval = nfsd_export_init();
- if (retval)
- goto out_free_cache;
nfsd_lockd_init(); /* lockd->nfsd callbacks */
- retval = nfsd_idmap_init();
- if (retval)
- goto out_free_lockd;
retval = create_proc_exports_entry();
if (retval)
- goto out_free_idmap;
+ goto out_free_lockd;
retval = register_filesystem(&nfsd_fs_type);
if (retval)
goto out_free_all;
@@ -1171,12 +1202,8 @@ static int __init init_nfsd(void)
out_free_all:
remove_proc_entry("fs/nfs/exports", NULL);
remove_proc_entry("fs/nfs", NULL);
-out_free_idmap:
- nfsd_idmap_shutdown();
out_free_lockd:
nfsd_lockd_shutdown();
- nfsd_export_shutdown();
-out_free_cache:
nfsd_reply_cache_shutdown();
out_free_stat:
nfsd_stat_shutdown();
@@ -1192,13 +1219,11 @@ out_unregister_notifier:
static void __exit exit_nfsd(void)
{
- nfsd_export_shutdown();
nfsd_reply_cache_shutdown();
remove_proc_entry("fs/nfs/exports", NULL);
remove_proc_entry("fs/nfs", NULL);
nfsd_stat_shutdown();
nfsd_lockd_shutdown();
- nfsd_idmap_shutdown();
nfsd4_free_slabs();
nfsd_fault_inject_cleanup();
unregister_filesystem(&nfsd_fs_type);
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 68454e75fce9..cc793005a87c 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -636,7 +636,7 @@ fh_put(struct svc_fh *fhp)
#endif
}
if (exp) {
- cache_put(&exp->h, &svc_export_cache);
+ exp_put(exp);
fhp->fh_export = NULL;
}
return;
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 28dfad39f0c5..cb4d51d8cbdb 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -220,7 +220,7 @@ static int nfsd_startup(unsigned short port, int nrservs)
ret = nfsd_init_socks(port);
if (ret)
goto out_racache;
- ret = lockd_up();
+ ret = lockd_up(&init_net);
if (ret)
goto out_racache;
ret = nfs4_state_start();
@@ -229,7 +229,7 @@ static int nfsd_startup(unsigned short port, int nrservs)
nfsd_up = true;
return 0;
out_lockd:
- lockd_down();
+ lockd_down(&init_net);
out_racache:
nfsd_racache_shutdown();
return ret;
@@ -246,7 +246,7 @@ static void nfsd_shutdown(void)
if (!nfsd_up)
return;
nfs4_state_shutdown();
- lockd_down();
+ lockd_down(&init_net);
nfsd_racache_shutdown();
nfsd_up = false;
}
@@ -261,7 +261,7 @@ static void nfsd_last_thread(struct svc_serv *serv, struct net *net)
printk(KERN_WARNING "nfsd: last server has exited, flushing export "
"cache\n");
- nfsd_export_flush();
+ nfsd_export_flush(net);
}
void nfsd_reset_versions(void)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 568666156ea4..c8bd9c3be7f7 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -2039,7 +2039,7 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
if (err)
goto out;
- offset = vfs_llseek(file, offset, 0);
+ offset = vfs_llseek(file, offset, SEEK_SET);
if (offset < 0) {
err = nfserrno((int)offset);
goto out_close;