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Merge branch 'nfs-for-2.6.33'

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This commit is contained in:
Trond Myklebust 2009-12-13 13:56:27 -05:00
commit 52c9948b1f
30 changed files with 1081 additions and 472 deletions
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13
fs/nfs/callback.c
View file

@ -78,11 +78,6 @@ nfs4_callback_svc(void *vrqstp)
set_freezable();
/*
* FIXME: do we really need to run this under the BKL? If so, please
* add a comment about what it's intended to protect.
*/
lock_kernel();
while (!kthread_should_stop()) {
/*
* Listen for a request on the socket
@ -104,7 +99,6 @@ nfs4_callback_svc(void *vrqstp)
preverr = err;
svc_process(rqstp);
}
unlock_kernel();
return 0;
}
@ -160,11 +154,6 @@ nfs41_callback_svc(void *vrqstp)
set_freezable();
/*
* FIXME: do we really need to run this under the BKL? If so, please
* add a comment about what it's intended to protect.
*/
lock_kernel();
while (!kthread_should_stop()) {
prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE);
spin_lock_bh(&serv->sv_cb_lock);
@ -183,7 +172,6 @@ nfs41_callback_svc(void *vrqstp)
}
finish_wait(&serv->sv_cb_waitq, &wq);
}
unlock_kernel();
return 0;
}
@ -397,6 +385,7 @@ static int nfs_callback_authenticate(struct svc_rqst *rqstp)
*/
static struct svc_version *nfs4_callback_version[] = {
[1] = &nfs4_callback_version1,
[4] = &nfs4_callback_version4,
};
static struct svc_stat nfs4_callback_stats;

16
fs/nfs/callback.h
View file

@ -106,6 +106,19 @@ struct cb_sequenceres {
extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,
struct cb_sequenceres *res);
extern int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation,
const nfs4_stateid *stateid);
#define RCA4_TYPE_MASK_RDATA_DLG 0
#define RCA4_TYPE_MASK_WDATA_DLG 1
struct cb_recallanyargs {
struct sockaddr *craa_addr;
uint32_t craa_objs_to_keep;
uint32_t craa_type_mask;
};
extern unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy);
#endif /* CONFIG_NFS_V4_1 */
extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
@ -114,8 +127,9 @@ extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
#ifdef 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,
const nfs4_stateid *stateid);
#endif /* CONFIG_NFS_V4 */
/*
* nfs41: Callbacks are expected to not cause substantial latency,
* so we limit their concurrency to 1 by setting up the maximum number

64
fs/nfs/callback_proc.c
View file

@ -61,6 +61,16 @@ out:
return res->status;
}
static int (*nfs_validate_delegation_stateid(struct nfs_client *clp))(struct nfs_delegation *, const nfs4_stateid *)
{
#if defined(CONFIG_NFS_V4_1)
if (clp->cl_minorversion > 0)
return nfs41_validate_delegation_stateid;
#endif
return nfs4_validate_delegation_stateid;
}
__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
{
struct nfs_client *clp;
@ -81,7 +91,8 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
inode = nfs_delegation_find_inode(clp, &args->fh);
if (inode != NULL) {
/* Set up a helper thread to actually return the delegation */
switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
switch (nfs_async_inode_return_delegation(inode, &args->stateid,
nfs_validate_delegation_stateid(clp))) {
case 0:
res = 0;
break;
@ -102,8 +113,31 @@ out:
return res;
}
int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
{
if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data,
sizeof(delegation->stateid.data)) != 0)
return 0;
return 1;
}
#if defined(CONFIG_NFS_V4_1)
int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
{
if (delegation == NULL)
return 0;
/* seqid is 4-bytes long */
if (((u32 *) &stateid->data)[0] != 0)
return 0;
if (memcmp(&delegation->stateid.data[4], &stateid->data[4],
sizeof(stateid->data)-4))
return 0;
return 1;
}
/*
* Validate the sequenceID sent by the server.
* Return success if the sequenceID is one more than what we last saw on
@ -227,4 +261,32 @@ out:
return res->csr_status;
}
unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy)
{
struct nfs_client *clp;
int status;
fmode_t flags = 0;
status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
clp = nfs_find_client(args->craa_addr, 4);
if (clp == NULL)
goto out;
dprintk("NFS: RECALL_ANY callback request from %s\n",
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags = FMODE_READ;
if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags |= FMODE_WRITE;
if (flags)
nfs_expire_all_delegation_types(clp, flags);
status = htonl(NFS4_OK);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
}
#endif /* CONFIG_NFS_V4_1 */

34
fs/nfs/callback_xdr.c
View file

@ -23,6 +23,7 @@
#if defined(CONFIG_NFS_V4_1)
#define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
4 + 1 + 3)
#define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#endif /* CONFIG_NFS_V4_1 */
#define NFSDBG_FACILITY NFSDBG_CALLBACK
@ -326,6 +327,25 @@ out_free:
goto out;
}
static unsigned decode_recallany_args(struct svc_rqst *rqstp,
struct xdr_stream *xdr,
struct cb_recallanyargs *args)
{
uint32_t *p;
args->craa_addr = svc_addr(rqstp);
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
args->craa_objs_to_keep = ntohl(*p++);
p = read_buf(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
args->craa_type_mask = ntohl(*p);
return 0;
}
#endif /* CONFIG_NFS_V4_1 */
static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
@ -533,6 +553,7 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
case OP_CB_GETATTR:
case OP_CB_RECALL:
case OP_CB_SEQUENCE:
case OP_CB_RECALL_ANY:
*op = &callback_ops[op_nr];
break;
@ -540,7 +561,6 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
case OP_CB_NOTIFY_DEVICEID:
case OP_CB_NOTIFY:
case OP_CB_PUSH_DELEG:
case OP_CB_RECALL_ANY:
case OP_CB_RECALLABLE_OBJ_AVAIL:
case OP_CB_RECALL_SLOT:
case OP_CB_WANTS_CANCELLED:
@ -688,6 +708,11 @@ static struct callback_op callback_ops[] = {
.encode_res = (callback_encode_res_t)encode_cb_sequence_res,
.res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ,
},
[OP_CB_RECALL_ANY] = {
.process_op = (callback_process_op_t)nfs4_callback_recallany,
.decode_args = (callback_decode_arg_t)decode_recallany_args,
.res_maxsize = CB_OP_RECALLANY_RES_MAXSZ,
},
#endif /* CONFIG_NFS_V4_1 */
};
@ -718,3 +743,10 @@ struct svc_version nfs4_callback_version1 = {
.vs_dispatch = NULL,
};
struct svc_version nfs4_callback_version4 = {
.vs_vers = 4,
.vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1),
.vs_proc = nfs4_callback_procedures1,
.vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
.vs_dispatch = NULL,
};

14
fs/nfs/client.c
View file

@ -1260,10 +1260,20 @@ error:
static void nfs4_session_set_rwsize(struct nfs_server *server)
{
#ifdef CONFIG_NFS_V4_1
struct nfs4_session *sess;
u32 server_resp_sz;
u32 server_rqst_sz;
if (!nfs4_has_session(server->nfs_client))
return;
server->rsize = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
server->wsize = server->nfs_client->cl_session->fc_attrs.max_rqst_sz;
sess = server->nfs_client->cl_session;
server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;
if (server->rsize > server_resp_sz)
server->rsize = server_resp_sz;
if (server->wsize > server_rqst_sz)
server->wsize = server_rqst_sz;
#endif /* CONFIG_NFS_V4_1 */
}

77
fs/nfs/delegation.c
View file

@ -92,7 +92,7 @@ out:
return status;
}
static void nfs_delegation_claim_opens(struct inode *inode, const nfs4_stateid *stateid)
static int nfs_delegation_claim_opens(struct inode *inode, const nfs4_stateid *stateid)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *ctx;
@ -116,10 +116,11 @@ again:
err = nfs_delegation_claim_locks(ctx, state);
put_nfs_open_context(ctx);
if (err != 0)
return;
return err;
goto again;
}
spin_unlock(&inode->i_lock);
return 0;
}
/*
@ -261,30 +262,34 @@ static void nfs_msync_inode(struct inode *inode)
/*
* Basic procedure for returning a delegation to the server
*/
static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegation *delegation)
static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync)
{
struct nfs_inode *nfsi = NFS_I(inode);
int err;
nfs_msync_inode(inode);
/*
* Guard against new delegated open/lock/unlock calls and against
* state recovery
*/
down_write(&nfsi->rwsem);
nfs_delegation_claim_opens(inode, &delegation->stateid);
err = nfs_delegation_claim_opens(inode, &delegation->stateid);
up_write(&nfsi->rwsem);
nfs_msync_inode(inode);
if (err)
goto out;
return nfs_do_return_delegation(inode, delegation, 1);
err = nfs_do_return_delegation(inode, delegation, issync);
out:
return err;
}
/*
* Return all delegations that have been marked for return
*/
void nfs_client_return_marked_delegations(struct nfs_client *clp)
int nfs_client_return_marked_delegations(struct nfs_client *clp)
{
struct nfs_delegation *delegation;
struct inode *inode;
int err = 0;
restart:
rcu_read_lock();
@ -298,12 +303,18 @@ restart:
delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL);
spin_unlock(&clp->cl_lock);
rcu_read_unlock();
if (delegation != NULL)
__nfs_inode_return_delegation(inode, delegation);
if (delegation != NULL) {
filemap_flush(inode->i_mapping);
err = __nfs_inode_return_delegation(inode, delegation, 0);
}
iput(inode);
goto restart;
if (!err)
goto restart;
set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
return err;
}
rcu_read_unlock();
return 0;
}
/*
@ -338,8 +349,10 @@ int nfs_inode_return_delegation(struct inode *inode)
spin_lock(&clp->cl_lock);
delegation = nfs_detach_delegation_locked(nfsi, NULL);
spin_unlock(&clp->cl_lock);
if (delegation != NULL)
err = __nfs_inode_return_delegation(inode, delegation);
if (delegation != NULL) {
nfs_msync_inode(inode);
err = __nfs_inode_return_delegation(inode, delegation, 1);
}
}
return err;
}
@ -368,31 +381,45 @@ void nfs_super_return_all_delegations(struct super_block *sb)
spin_unlock(&delegation->lock);
}
rcu_read_unlock();
nfs_client_return_marked_delegations(clp);
if (nfs_client_return_marked_delegations(clp) != 0)
nfs4_schedule_state_manager(clp);
}
static void nfs_client_mark_return_all_delegations(struct nfs_client *clp)
static
void nfs_client_mark_return_all_delegation_types(struct nfs_client *clp, fmode_t flags)
{
struct nfs_delegation *delegation;
rcu_read_lock();
list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
if ((delegation->type == (FMODE_READ|FMODE_WRITE)) && !(flags & FMODE_WRITE))
continue;
if (delegation->type & flags)
nfs_mark_return_delegation(clp, delegation);
}
rcu_read_unlock();
}
static void nfs_client_mark_return_all_delegations(struct nfs_client *clp)
{
nfs_client_mark_return_all_delegation_types(clp, FMODE_READ|FMODE_WRITE);
}
static void nfs_delegation_run_state_manager(struct nfs_client *clp)
{
if (test_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state))
nfs4_schedule_state_manager(clp);
}
void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags)
{
nfs_client_mark_return_all_delegation_types(clp, flags);
nfs_delegation_run_state_manager(clp);
}
void nfs_expire_all_delegations(struct nfs_client *clp)
{
nfs_client_mark_return_all_delegations(clp);
nfs_delegation_run_state_manager(clp);
nfs_expire_all_delegation_types(clp, FMODE_READ|FMODE_WRITE);
}
/*
@ -413,8 +440,7 @@ static void nfs_client_mark_return_unreferenced_delegations(struct nfs_client *c
list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
if (test_and_clear_bit(NFS_DELEGATION_REFERENCED, &delegation->flags))
continue;
set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
nfs_mark_return_delegation(clp, delegation);
}
rcu_read_unlock();
}
@ -428,18 +454,21 @@ void nfs_expire_unreferenced_delegations(struct nfs_client *clp)
/*
* Asynchronous delegation recall!
*/
int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid)
int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid,
int (*validate_stateid)(struct nfs_delegation *delegation,
const nfs4_stateid *stateid))
{
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
struct nfs_delegation *delegation;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data,
sizeof(delegation->stateid.data)) != 0) {
if (!validate_stateid(delegation, stateid)) {
rcu_read_unlock();
return -ENOENT;
}
nfs_mark_return_delegation(clp, delegation);
rcu_read_unlock();
nfs_delegation_run_state_manager(clp);

7
fs/nfs/delegation.h
View file

@ -34,15 +34,18 @@ enum {
int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
int nfs_inode_return_delegation(struct inode *inode);
int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid,
int (*validate_stateid)(struct nfs_delegation *delegation,
const nfs4_stateid *stateid));
void nfs_inode_return_delegation_noreclaim(struct inode *inode);
struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
void nfs_super_return_all_delegations(struct super_block *sb);
void nfs_expire_all_delegations(struct nfs_client *clp);
void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags);
void nfs_expire_unreferenced_delegations(struct nfs_client *clp);
void nfs_handle_cb_pathdown(struct nfs_client *clp);
void nfs_client_return_marked_delegations(struct nfs_client *clp);
int nfs_client_return_marked_delegations(struct nfs_client *clp);
void nfs_delegation_mark_reclaim(struct nfs_client *clp);
void nfs_delegation_reap_unclaimed(struct nfs_client *clp);

67
fs/nfs/dir.c
View file

@ -1579,55 +1579,46 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct dentry *dentry = NULL, *rehash = NULL;
int error = -EBUSY;
/*
* To prevent any new references to the target during the rename,
* we unhash the dentry and free the inode in advance.
*/
if (!d_unhashed(new_dentry)) {
d_drop(new_dentry);
rehash = new_dentry;
}
dfprintk(VFS, "NFS: rename(%s/%s -> %s/%s, ct=%d)\n",
old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
new_dentry->d_parent->d_name.name, new_dentry->d_name.name,
atomic_read(&new_dentry->d_count));
/*
* First check whether the target is busy ... we can't
* safely do _any_ rename if the target is in use.
*
* For files, make a copy of the dentry and then do a
* silly-rename. If the silly-rename succeeds, the
* copied dentry is hashed and becomes the new target.
* For non-directories, check whether the target is busy and if so,
* make a copy of the dentry and then do a silly-rename. If the
* silly-rename succeeds, the copied dentry is hashed and becomes
* the new target.
*/
if (!new_inode)
goto go_ahead;
if (S_ISDIR(new_inode->i_mode)) {
error = -EISDIR;
if (!S_ISDIR(old_inode->i_mode))
goto out;
} else if (atomic_read(&new_dentry->d_count) > 2) {
int err;
/* copy the target dentry's name */
dentry = d_alloc(new_dentry->d_parent,
&new_dentry->d_name);
if (!dentry)
goto out;
if (new_inode && !S_ISDIR(new_inode->i_mode)) {
/*
* To prevent any new references to the target during the
* rename, we unhash the dentry in advance.
*/
if (!d_unhashed(new_dentry)) {
d_drop(new_dentry);
rehash = new_dentry;
}
/* silly-rename the existing target ... */
err = nfs_sillyrename(new_dir, new_dentry);
if (!err) {
new_dentry = rehash = dentry;
if (atomic_read(&new_dentry->d_count) > 2) {
int err;
/* copy the target dentry's name */
dentry = d_alloc(new_dentry->d_parent,
&new_dentry->d_name);
if (!dentry)
goto out;
/* silly-rename the existing target ... */
err = nfs_sillyrename(new_dir, new_dentry);
if (err)
goto out;
new_dentry = dentry;
new_inode = NULL;
/* instantiate the replacement target */
d_instantiate(new_dentry, NULL);
} else if (atomic_read(&new_dentry->d_count) > 1)
/* dentry still busy? */
goto out;
}
}
go_ahead:
/*
* ... prune child dentries and writebacks if needed.
*/

4
fs/nfs/dns_resolve.c
View file

@ -146,7 +146,7 @@ static int nfs_dns_show(struct seq_file *m, struct cache_detail *cd,
return 0;
}
struct nfs_dns_ent *nfs_dns_lookup(struct cache_detail *cd,
static struct nfs_dns_ent *nfs_dns_lookup(struct cache_detail *cd,
struct nfs_dns_ent *key)
{
struct cache_head *ch;
@ -159,7 +159,7 @@ struct nfs_dns_ent *nfs_dns_lookup(struct cache_detail *cd,
return container_of(ch, struct nfs_dns_ent, h);
}
struct nfs_dns_ent *nfs_dns_update(struct cache_detail *cd,
static struct nfs_dns_ent *nfs_dns_update(struct cache_detail *cd,
struct nfs_dns_ent *new,
struct nfs_dns_ent *key)
{

54
fs/nfs/internal.h
View file

@ -30,6 +30,15 @@ static inline int nfs4_has_session(const struct nfs_client *clp)
return 0;
}
static inline int nfs4_has_persistent_session(const struct nfs_client *clp)
{
#ifdef CONFIG_NFS_V4_1
if (nfs4_has_session(clp))
return (clp->cl_session->flags & SESSION4_PERSIST);
#endif /* CONFIG_NFS_V4_1 */
return 0;
}
struct nfs_clone_mount {
const struct super_block *sb;
const struct dentry *dentry;
@ -156,6 +165,7 @@ struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentr
/* callback_xdr.c */
extern struct svc_version nfs4_callback_version1;
extern struct svc_version nfs4_callback_version4;
/* pagelist.c */
extern int __init nfs_init_nfspagecache(void);
@ -177,24 +187,14 @@ extern __be32 * nfs_decode_dirent(__be32 *, struct nfs_entry *, int);
extern struct rpc_procinfo nfs3_procedures[];
extern __be32 *nfs3_decode_dirent(__be32 *, struct nfs_entry *, int);
/* nfs4proc.c */
static inline void nfs4_restart_rpc(struct rpc_task *task,
const struct nfs_client *clp)
{
#ifdef CONFIG_NFS_V4_1
if (nfs4_has_session(clp) &&
test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state)) {
rpc_restart_call_prepare(task);
return;
}
#endif /* CONFIG_NFS_V4_1 */
rpc_restart_call(task);
}
/* nfs4xdr.c */
#ifdef CONFIG_NFS_V4
extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus);
#endif
#ifdef CONFIG_NFS_V4_1
extern const u32 nfs41_maxread_overhead;
extern const u32 nfs41_maxwrite_overhead;
#endif
/* nfs4proc.c */
#ifdef CONFIG_NFS_V4
@ -273,20 +273,6 @@ extern int _nfs4_call_sync_session(struct nfs_server *server,
struct nfs4_sequence_res *res,
int cache_reply);
#ifdef CONFIG_NFS_V4_1
extern void nfs41_sequence_free_slot(const struct nfs_client *,
struct nfs4_sequence_res *res);
#endif /* CONFIG_NFS_V4_1 */
static inline void nfs4_sequence_free_slot(const struct nfs_client *clp,
struct nfs4_sequence_res *res)
{
#ifdef CONFIG_NFS_V4_1
if (nfs4_has_session(clp))
nfs41_sequence_free_slot(clp, res);
#endif /* CONFIG_NFS_V4_1 */
}
/*
* Determine the device name as a string
*/
@ -380,3 +366,15 @@ unsigned int nfs_page_array_len(unsigned int base, size_t len)
return ((unsigned long)len + (unsigned long)base +
PAGE_SIZE - 1) >> PAGE_SHIFT;
}
/*
* Helper for restarting RPC calls in the possible presence of NFSv4.1
* sessions.
*/
static inline void nfs_restart_rpc(struct rpc_task *task, const struct nfs_client *clp)
{
if (nfs4_has_session(clp))
rpc_restart_call_prepare(task);
else
rpc_restart_call(task);
}

12
fs/nfs/nfs4_fs.h
View file

@ -44,7 +44,8 @@ enum nfs4_client_state {
NFS4CLNT_RECLAIM_REBOOT,
NFS4CLNT_RECLAIM_NOGRACE,
NFS4CLNT_DELEGRETURN,
NFS4CLNT_SESSION_SETUP,
NFS4CLNT_SESSION_RESET,
NFS4CLNT_SESSION_DRAINING,
};
/*
@ -180,6 +181,7 @@ struct nfs4_state_recovery_ops {
int (*recover_lock)(struct nfs4_state *, struct file_lock *);
int (*establish_clid)(struct nfs_client *, struct rpc_cred *);
struct rpc_cred * (*get_clid_cred)(struct nfs_client *);
int (*reclaim_complete)(struct nfs_client *);
};
struct nfs4_state_maintenance_ops {
@ -200,9 +202,11 @@ extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t);
/* nfs4proc.c */
extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *);
extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct rpc_cred *);
extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait);
extern struct dentry *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
@ -218,9 +222,11 @@ extern int nfs4_setup_sequence(struct nfs_client *clp,
int cache_reply, struct rpc_task *task);
extern void nfs4_destroy_session(struct nfs4_session *session);
extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
extern int nfs4_proc_create_session(struct nfs_client *, int reset);
extern int nfs4_proc_create_session(struct nfs_client *);
extern int nfs4_proc_destroy_session(struct nfs4_session *);
extern int nfs4_init_session(struct nfs_server *server);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
#else /* CONFIG_NFS_v4_1 */
static inline int nfs4_setup_sequence(struct nfs_client *clp,
struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
@ -267,6 +273,7 @@ extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
extern void nfs4_schedule_state_recovery(struct nfs_client *);
extern void nfs4_schedule_state_manager(struct nfs_client *);
extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
@ -287,6 +294,7 @@ struct nfs4_mount_data;
/* callback_xdr.c */
extern struct svc_version nfs4_callback_version1;
extern struct svc_version nfs4_callback_version4;
#else

458
fs/nfs/nfs4proc.c
View file

@ -270,11 +270,18 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
case -NFS4ERR_SEQ_MISORDERED:
dprintk("%s ERROR: %d Reset session\n", __func__,
errorcode);
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
nfs4_schedule_state_recovery(clp);
exception->retry = 1;
/* FALLTHROUGH */
break;
#endif /* !defined(CONFIG_NFS_V4_1) */
case -NFS4ERR_FILE_OPEN:
if (exception->timeout > HZ) {
/* We have retried a decent amount, time to
* fail
*/
ret = -EBUSY;
break;
}
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
ret = nfs4_delay(server->client, &exception->timeout);
@ -311,48 +318,54 @@ static void renew_lease(const struct nfs_server *server, unsigned long timestamp
* so we need to scan down from highest_used_slotid to 0 looking for the now
* highest slotid in use.
* If none found, highest_used_slotid is set to -1.
*
* Must be called while holding tbl->slot_tbl_lock
*/
static void
nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
{
int slotid = free_slotid;
spin_lock(&tbl->slot_tbl_lock);
/* clear used bit in bitmap */
__clear_bit(slotid, tbl->used_slots);
/* update highest_used_slotid when it is freed */
if (slotid == tbl->highest_used_slotid) {
slotid = find_last_bit(tbl->used_slots, tbl->max_slots);
if (slotid >= 0 && slotid < tbl->max_slots)
if (slotid < tbl->max_slots)
tbl->highest_used_slotid = slotid;
else
tbl->highest_used_slotid = -1;
}
rpc_wake_up_next(&tbl->slot_tbl_waitq);
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
free_slotid, tbl->highest_used_slotid);
}
void nfs41_sequence_free_slot(const struct nfs_client *clp,
static void nfs41_sequence_free_slot(const struct nfs_client *clp,
struct nfs4_sequence_res *res)
{
struct nfs4_slot_table *tbl;
if (!nfs4_has_session(clp)) {
dprintk("%s: No session\n", __func__);
return;
}
tbl = &clp->cl_session->fc_slot_table;
if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
dprintk("%s: No slot\n", __func__);
/* just wake up the next guy waiting since
* we may have not consumed a slot after all */
rpc_wake_up_next(&tbl->slot_tbl_waitq);
dprintk("%s: No slot\n", __func__);
return;
}
spin_lock(&tbl->slot_tbl_lock);
nfs4_free_slot(tbl, res->sr_slotid);
/* Signal state manager thread if session is drained */
if (test_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state)) {
if (tbl->highest_used_slotid == -1) {
dprintk("%s COMPLETE: Session Drained\n", __func__);
complete(&clp->cl_session->complete);
}
} else
rpc_wake_up_next(&tbl->slot_tbl_waitq);
spin_unlock(&tbl->slot_tbl_lock);
res->sr_slotid = NFS4_MAX_SLOT_TABLE;
}
@ -377,10 +390,10 @@ static void nfs41_sequence_done(struct nfs_client *clp,
if (res->sr_slotid == NFS4_MAX_SLOT_TABLE)
goto out;
tbl = &clp->cl_session->fc_slot_table;
slot = tbl->slots + res->sr_slotid;
/* Check the SEQUENCE operation status */
if (res->sr_status == 0) {
tbl = &clp->cl_session->fc_slot_table;
slot = tbl->slots + res->sr_slotid;
/* Update the slot's sequence and clientid lease timer */
++slot->seq_nr;
timestamp = res->sr_renewal_time;
@ -388,7 +401,8 @@ static void nfs41_sequence_done(struct nfs_client *clp,
if (time_before(clp->cl_last_renewal, timestamp))
clp->cl_last_renewal = timestamp;
spin_unlock(&clp->cl_lock);
return;
/* Check sequence flags */
nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
}
out:
/* The session may be reset by one of the error handlers. */
@ -429,24 +443,6 @@ out:
return ret_id;
}
static int nfs4_recover_session(struct nfs4_session *session)
{
struct nfs_client *clp = session->clp;
unsigned int loop;
int ret;
for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
ret = nfs4_wait_clnt_recover(clp);
if (ret != 0)
break;
if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))
break;
nfs4_schedule_state_manager(clp);
ret = -EIO;
}
return ret;
}
static int nfs41_setup_sequence(struct nfs4_session *session,
struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res,
@ -455,7 +451,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session,
{
struct nfs4_slot *slot;
struct nfs4_slot_table *tbl;
int status = 0;
u8 slotid;
dprintk("--> %s\n", __func__);
@ -468,21 +463,15 @@ static int nfs41_setup_sequence(struct nfs4_session *session,
tbl = &session->fc_slot_table;
spin_lock(&tbl->slot_tbl_lock);
if (test_bit(NFS4CLNT_SESSION_SETUP, &session->clp->cl_state)) {
if (tbl->highest_used_slotid != -1) {
rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
spin_unlock(&tbl->slot_tbl_lock);
dprintk("<-- %s: Session reset: draining\n", __func__);
return -EAGAIN;
}
/* The slot table is empty; start the reset thread */
dprintk("%s Session Reset\n", __func__);
if (test_bit(NFS4CLNT_SESSION_DRAINING, &session->clp->cl_state)) {
/*
* The state manager will wait until the slot table is empty.
* Schedule the reset thread
*/
rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
spin_unlock(&tbl->slot_tbl_lock);
status = nfs4_recover_session(session);
if (status)
return status;
spin_lock(&tbl->slot_tbl_lock);
dprintk("%s Schedule Session Reset\n", __func__);
return -EAGAIN;
}
slotid = nfs4_find_slot(tbl, task);
@ -527,7 +516,7 @@ int nfs4_setup_sequence(struct nfs_client *clp,
goto out;
ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply,
task);
if (ret != -EAGAIN) {
if (ret && ret != -EAGAIN) {
/* terminate rpc task */
task->tk_status = ret;
task->tk_action = NULL;
@ -561,7 +550,6 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
struct nfs41_call_sync_data *data = calldata;
nfs41_sequence_done(data->clp, data->seq_res, task->tk_status);
nfs41_sequence_free_slot(data->clp, data->seq_res);
}
struct rpc_call_ops nfs41_call_sync_ops = {
@ -637,15 +625,6 @@ static void nfs4_sequence_done(const struct nfs_server *server,
#endif /* CONFIG_NFS_V4_1 */
}
/* no restart, therefore free slot here */
static void nfs4_sequence_done_free_slot(const struct nfs_server *server,
struct nfs4_sequence_res *res,
int rpc_status)
{
nfs4_sequence_done(server, res, rpc_status);
nfs4_sequence_free_slot(server->nfs_client, res);
}
static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
{
struct nfs_inode *nfsi = NFS_I(dir);
@ -720,9 +699,15 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->o_arg.bitmask = server->attr_bitmask;
p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
if (flags & O_EXCL) {
u32 *s = (u32 *) p->o_arg.u.verifier.data;
s[0] = jiffies;
s[1] = current->pid;
if (nfs4_has_persistent_session(server->nfs_client)) {
/* GUARDED */
p->o_arg.u.attrs = &p->attrs;
memcpy(&p->attrs, attrs, sizeof(p->attrs));
} else { /* EXCLUSIVE4_1 */
u32 *s = (u32 *) p->o_arg.u.verifier.data;
s[0] = jiffies;
s[1] = current->pid;
}
} else if (flags & O_CREAT) {
p->o_arg.u.attrs = &p->attrs;
memcpy(&p->attrs, attrs, sizeof(p->attrs));
@ -776,13 +761,16 @@ static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode
goto out;
switch (mode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
&& state->n_rdonly != 0;
break;
case FMODE_WRITE:
ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0;
ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
&& state->n_wronly != 0;
break;
case FMODE_READ|FMODE_WRITE:
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
&& state->n_rdwr != 0;
}
out:
return ret;
@ -1183,6 +1171,14 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
case -ENOENT:
case -ESTALE:
goto out;
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_DEADSESSION:
nfs4_schedule_state_recovery(
server->nfs_client);
goto out;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
@ -1336,8 +1332,8 @@ static void nfs4_open_done(struct rpc_task *task, void *calldata)
data->rpc_status = task->tk_status;
nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res,
task->tk_status);
nfs4_sequence_done(data->o_arg.server, &data->o_res.seq_res,
task->tk_status);
if (RPC_ASSASSINATED(task))
return;
@ -1488,7 +1484,7 @@ static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *s
return ret;
}
static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
@ -1496,10 +1492,16 @@ static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4
do {
err = _nfs4_open_expired(ctx, state);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
switch (err) {
default:
goto out;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
nfs4_handle_exception(server, err, &exception);
err = 0;
}
} while (exception.retry);
out:
return err;
}
@ -1712,6 +1714,18 @@ static void nfs4_free_closedata(void *data)
kfree(calldata);
}
static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
fmode_t fmode)
{
spin_lock(&state->owner->so_lock);
if (!(fmode & FMODE_READ))
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
if (!(fmode & FMODE_WRITE))
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_O_RDWR_STATE, &state->flags);
spin_unlock(&state->owner->so_lock);
}
static void nfs4_close_done(struct rpc_task *task, void *data)
{
struct nfs4_closedata *calldata = data;
@ -1728,6 +1742,8 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
case 0:
nfs_set_open_stateid(state, &calldata->res.stateid, 0);
renew_lease(server, calldata->timestamp);
nfs4_close_clear_stateid_flags(state,
calldata->arg.fmode);
break;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_OLD_STATEID:
@ -1737,11 +1753,10 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
nfs4_restart_rpc(task, server->nfs_client);
nfs_restart_rpc(task, server->nfs_client);
return;
}
}
nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res);
nfs_refresh_inode(calldata->inode, calldata->res.fattr);
}
@ -1749,38 +1764,39 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
{
struct nfs4_closedata *calldata = data;
struct nfs4_state *state = calldata->state;
int clear_rd, clear_wr, clear_rdwr;
int call_close = 0;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
return;
clear_rd = clear_wr = clear_rdwr = 0;
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
spin_lock(&state->owner->so_lock);
/* Calculate the change in open mode */
if (state->n_rdwr == 0) {
if (state->n_rdonly == 0) {
clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags);
clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags);
call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
calldata->arg.fmode &= ~FMODE_READ;
}
if (state->n_wronly == 0) {
clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags);
call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
calldata->arg.fmode &= ~FMODE_WRITE;
}
}
spin_unlock(&state->owner->so_lock);
if (!clear_rd && !clear_wr && !clear_rdwr) {
if (!call_close) {
/* Note: exit _without_ calling nfs4_close_done */
task->tk_action = NULL;
return;
}
if (calldata->arg.fmode == 0)
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.fmode = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.fmode = FMODE_WRITE;
}
calldata->timestamp = jiffies;
if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client,
&calldata->arg.seq_args, &calldata->res.seq_res,
@ -1981,7 +1997,7 @@ out_drop:
return 0;
}
void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
{
if (ctx->state == NULL)
return;
@ -2532,7 +2548,6 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
nfs4_sequence_done(res->server, &res->seq_res, task->tk_status);
if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
return 0;
nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res);
update_changeattr(dir, &res->cinfo);
nfs_post_op_update_inode(dir, &res->dir_attr);
return 1;
@ -2971,11 +2986,10 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
dprintk("--> %s\n", __func__);
/* nfs4_sequence_free_slot called in the read rpc_call_done */
nfs4_sequence_done(server, &data->res.seq_res, task->tk_status);
if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
nfs4_restart_rpc(task, server->nfs_client);
nfs_restart_rpc(task, server->nfs_client);
return -EAGAIN;
}
@ -2995,12 +3009,11 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
struct inode *inode = data->inode;
/* slot is freed in nfs_writeback_done */
nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
task->tk_status);
if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
return -EAGAIN;
}
if (task->tk_status >= 0) {
@ -3028,11 +3041,9 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
task->tk_status);
if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
return -EAGAIN;
}
nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client,
&data->res.seq_res);
nfs_refresh_inode(inode, data->res.fattr);
return 0;
}
@ -3350,7 +3361,7 @@ _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
case -NFS4ERR_SEQ_MISORDERED:
dprintk("%s ERROR %d, Reset session\n", __func__,
task->tk_status);
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
nfs4_schedule_state_recovery(clp);
task->tk_status = 0;
return -EAGAIN;
#endif /* CONFIG_NFS_V4_1 */
@ -3483,12 +3494,23 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res,
task->tk_status);
nfs4_sequence_done(data->res.server, &data->res.seq_res,
task->tk_status);
data->rpc_status = task->tk_status;
if (data->rpc_status == 0)
switch (task->tk_status) {
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
case 0:
renew_lease(data->res.server, data->timestamp);
break;
default:
if (nfs4_async_handle_error(task, data->res.server, NULL) ==
-EAGAIN) {
nfs_restart_rpc(task, data->res.server->nfs_client);
return;
}
}
data->rpc_status = task->tk_status;
}
static void nfs4_delegreturn_release(void *calldata)
@ -3741,11 +3763,9 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
break;
default:
if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
nfs4_restart_rpc(task,
calldata->server->nfs_client);
nfs_restart_rpc(task,
calldata->server->nfs_client);
}
nfs4_sequence_free_slot(calldata->server->nfs_client,
&calldata->res.seq_res);
}
static void nfs4_locku_prepare(struct rpc_task *task, void *data)
@ -3927,8 +3947,8 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
dprintk("%s: begin!\n", __func__);
nfs4_sequence_done_free_slot(data->server, &data->res.seq_res,
task->tk_status);
nfs4_sequence_done(data->server, &data->res.seq_res,
task->tk_status);
data->rpc_status = task->tk_status;
if (RPC_ASSASSINATED(task))
@ -4049,10 +4069,16 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 0);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
switch (err) {
default:
goto out;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
nfs4_handle_exception(server, err, &exception);
err = 0;
}
} while (exception.retry);
out:
return err;
}
@ -4172,6 +4198,11 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
case -NFS4ERR_EXPIRED:
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_DEADSESSION:
nfs4_schedule_state_recovery(server->nfs_client);
goto out;
case -ERESTARTSYS:
@ -4296,7 +4327,7 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
* NFS4ERR_BADSESSION in the sequence operation, and will therefore
* be in some phase of session reset.
*/
static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
{
nfs4_verifier verifier;
struct nfs41_exchange_id_args args = {
@ -4318,6 +4349,9 @@ static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
dprintk("--> %s\n", __func__);
BUG_ON(clp == NULL);
/* Remove server-only flags */
args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R;
p = (u32 *)verifier.data;
*p++ = htonl((u32)clp->cl_boot_time.tv_sec);
*p = htonl((u32)clp->cl_boot_time.tv_nsec);
@ -4389,10 +4423,9 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
rpc_delay(task, NFS4_POLL_RETRY_MIN);
task->tk_status = 0;
nfs4_restart_rpc(task, data->clp);
nfs_restart_rpc(task, data->clp);
return;
}
nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res);
dprintk("<-- %s\n", __func__);
}
@ -4465,7 +4498,6 @@ static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots,
spin_lock(&tbl->slot_tbl_lock);
for (i = 0; i < max_slots; ++i)
tbl->slots[i].seq_nr = ivalue;
tbl->highest_used_slotid = -1;
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
tbl, tbl->slots, tbl->max_slots);
@ -4515,7 +4547,6 @@ static void nfs4_destroy_slot_tables(struct nfs4_session *session)
static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
int max_slots, int ivalue)
{
int i;
struct nfs4_slot *slot;
int ret = -ENOMEM;
@ -4526,18 +4557,9 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL);
if (!slot)
goto out;
for (i = 0; i < max_slots; ++i)
slot[i].seq_nr = ivalue;
ret = 0;
spin_lock(&tbl->slot_tbl_lock);
if (tbl->slots != NULL) {
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
__func__, tbl, tbl->slots);
WARN_ON(1);
goto out_free;
}
tbl->max_slots = max_slots;
tbl->slots = slot;
tbl->highest_used_slotid = -1; /* no slot is currently used */
@ -4547,10 +4569,6 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
out:
dprintk("<-- %s: return %d\n", __func__, ret);
return ret;
out_free:
kfree(slot);
goto out;
}
/*
@ -4558,17 +4576,24 @@ out_free:
*/
static int nfs4_init_slot_tables(struct nfs4_session *session)
{
int status;
struct nfs4_slot_table *tbl;
int status = 0;
status = nfs4_init_slot_table(&session->fc_slot_table,
session->fc_attrs.max_reqs, 1);
if (status)
return status;
tbl = &session->fc_slot_table;
if (tbl->slots == NULL) {
status = nfs4_init_slot_table(tbl,
session->fc_attrs.max_reqs, 1);
if (status)
return status;
}
status = nfs4_init_slot_table(&session->bc_slot_table,
session->bc_attrs.max_reqs, 0);
if (status)
nfs4_destroy_slot_tables(session);
tbl = &session->bc_slot_table;
if (tbl->slots == NULL) {
status = nfs4_init_slot_table(tbl,
session->bc_attrs.max_reqs, 0);
if (status)
nfs4_destroy_slot_tables(session);
}
return status;
}
@ -4582,7 +4607,6 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
if (!session)
return NULL;
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
/*
* The create session reply races with the server back
* channel probe. Mark the client NFS_CS_SESSION_INITING
@ -4590,12 +4614,15 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
* nfs_client struct
*/
clp->cl_cons_state = NFS_CS_SESSION_INITING;
init_completion(&session->complete);
tbl = &session->fc_slot_table;
tbl->highest_used_slotid = -1;
spin_lock_init(&tbl->slot_tbl_lock);
rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
tbl = &session->bc_slot_table;
tbl->highest_used_slotid = -1;
spin_lock_init(&tbl->slot_tbl_lock);
rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
@ -4747,11 +4774,10 @@ static int _nfs4_proc_create_session(struct nfs_client *clp)
* It is the responsibility of the caller to verify the session is
* expired before calling this routine.
*/
int nfs4_proc_create_session(struct nfs_client *clp, int reset)
int nfs4_proc_create_session(struct nfs_client *clp)
{
int status;
unsigned *ptr;
struct nfs_fsinfo fsinfo;
struct nfs4_session *session = clp->cl_session;
dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
@ -4760,35 +4786,19 @@ int nfs4_proc_create_session(struct nfs_client *clp, int reset)
if (status)
goto out;
/* Init or reset the fore channel */
if (reset)
status = nfs4_reset_slot_tables(session);
else
status = nfs4_init_slot_tables(session);
dprintk("fore channel slot table initialization returned %d\n", status);
/* Init and reset the fore channel */
status = nfs4_init_slot_tables(session);
dprintk("slot table initialization returned %d\n", status);
if (status)
goto out;
status = nfs4_reset_slot_tables(session);
dprintk("slot table reset returned %d\n", status);
if (status)
goto out;
ptr = (unsigned *)&session->sess_id.data[0];
dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
if (reset)
/* Lease time is aleady set */
goto out;
/* Get the lease time */
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
/* Update lease time and schedule renewal */
spin_lock(&clp->cl_lock);
clp->cl_lease_time = fsinfo.lease_time * HZ;
clp->cl_last_renewal = jiffies;
clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
spin_unlock(&clp->cl_lock);
nfs4_schedule_state_renewal(clp);
}
out:
dprintk("<-- %s\n", __func__);
return status;
@ -4827,13 +4837,16 @@ int nfs4_proc_destroy_session(struct nfs4_session *session)
int nfs4_init_session(struct nfs_server *server)
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_session *session;
int ret;
if (!nfs4_has_session(clp))
return 0;
clp->cl_session->fc_attrs.max_rqst_sz = server->wsize;
clp->cl_session->fc_attrs.max_resp_sz = server->rsize;
session = clp->cl_session;
session->fc_attrs.max_rqst_sz = server->wsize + nfs41_maxwrite_overhead;
session->fc_attrs.max_resp_sz = server->rsize + nfs41_maxread_overhead;
ret = nfs4_recover_expired_lease(server);
if (!ret)
ret = nfs4_check_client_ready(clp);
@ -4872,11 +4885,10 @@ void nfs41_sequence_call_done(struct rpc_task *task, void *data)
if (_nfs4_async_handle_error(task, NULL, clp, NULL)
== -EAGAIN) {
nfs4_restart_rpc(task, clp);
nfs_restart_rpc(task, clp);
return;
}
}
nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
kfree(task->tk_msg.rpc_argp);
@ -4931,6 +4943,109 @@ static int nfs41_proc_async_sequence(struct nfs_client *clp,
&nfs41_sequence_ops, (void *)clp);
}
struct nfs4_reclaim_complete_data {
struct nfs_client *clp;
struct nfs41_reclaim_complete_args arg;
struct nfs41_reclaim_complete_res res;
};
static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
{
struct nfs4_reclaim_complete_data *calldata = data;
if (nfs4_setup_sequence(calldata->clp, &calldata->arg.seq_args,
&calldata->res.seq_res, 0, task))
return;
rpc_call_start(task);
}
static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
{
struct nfs4_reclaim_complete_data *calldata = data;
struct nfs_client *clp = calldata->clp;
struct nfs4_sequence_res *res = &calldata->res.seq_res;
dprintk("--> %s\n", __func__);
nfs41_sequence_done(clp, res, task->tk_status);
switch (task->tk_status) {
case 0:
case -NFS4ERR_COMPLETE_ALREADY:
break;
case -NFS4ERR_BADSESSION:
case -NFS4ERR_DEADSESSION:
/*
* Handle the session error, but do not retry the operation, as
* we have no way of telling whether the clientid had to be
* reset before we got our reply. If reset, a new wave of
* reclaim operations will follow, containing their own reclaim
* complete. We don't want our retry to get on the way of
* recovery by incorrectly indicating to the server that we're
* done reclaiming state since the process had to be restarted.
*/
_nfs4_async_handle_error(task, NULL, clp, NULL);
break;
default:
if (_nfs4_async_handle_error(
task, NULL, clp, NULL) == -EAGAIN) {
rpc_restart_call_prepare(task);
return;
}
}
dprintk("<-- %s\n", __func__);
}
static void nfs4_free_reclaim_complete_data(void *data)
{
struct nfs4_reclaim_complete_data *calldata = data;
kfree(calldata);
}
static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
.rpc_call_prepare = nfs4_reclaim_complete_prepare,
.rpc_call_done = nfs4_reclaim_complete_done,
.rpc_release = nfs4_free_reclaim_complete_data,
};
/*
* Issue a global reclaim complete.
*/
static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
{
struct nfs4_reclaim_complete_data *calldata;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
};
struct rpc_task_setup task_setup_data = {
.rpc_client = clp->cl_rpcclient,
.rpc_message = &msg,
.callback_ops = &nfs4_reclaim_complete_call_ops,
.flags = RPC_TASK_ASYNC,
};
int status = -ENOMEM;
dprintk("--> %s\n", __func__);
calldata = kzalloc(sizeof(*calldata), GFP_KERNEL);
if (calldata == NULL)
goto out;
calldata->clp = clp;
calldata->arg.one_fs = 0;
calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
msg.rpc_argp = &calldata->arg;
msg.rpc_resp = &calldata->res;
task_setup_data.callback_data = calldata;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
status = PTR_ERR(task);
rpc_put_task(task);
out:
dprintk("<-- %s status=%d\n", __func__, status);
return status;
}
#endif /* CONFIG_NFS_V4_1 */
struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
@ -4948,8 +5063,9 @@ struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
.state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
.recover_open = nfs4_open_reclaim,
.recover_lock = nfs4_lock_reclaim,
.establish_clid = nfs4_proc_exchange_id,
.establish_clid = nfs41_init_clientid,
.get_clid_cred = nfs4_get_exchange_id_cred,
.reclaim_complete = nfs41_proc_reclaim_complete,
};
#endif /* CONFIG_NFS_V4_1 */
@ -4968,7 +5084,7 @@ struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
.state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
.recover_open = nfs4_open_expired,
.recover_lock = nfs4_lock_expired,
.establish_clid = nfs4_proc_exchange_id,
.establish_clid = nfs41_init_clientid,
.get_clid_cred = nfs4_get_exchange_id_cred,
};
#endif /* CONFIG_NFS_V4_1 */

231
fs/nfs/nfs4state.c
View file

@ -116,6 +116,68 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp)
#if defined(CONFIG_NFS_V4_1)
static int nfs41_setup_state_renewal(struct nfs_client *clp)
{
int status;
struct nfs_fsinfo fsinfo;
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
/* Update lease time and schedule renewal */
spin_lock(&clp->cl_lock);
clp->cl_lease_time = fsinfo.lease_time * HZ;
clp->cl_last_renewal = jiffies;
spin_unlock(&clp->cl_lock);
nfs4_schedule_state_renewal(clp);
}
return status;
}
static void nfs41_end_drain_session(struct nfs_client *clp,
struct nfs4_session *ses)
{
if (test_and_clear_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state))
rpc_wake_up(&ses->fc_slot_table.slot_tbl_waitq);
}
static int nfs41_begin_drain_session(struct nfs_client *clp,
struct nfs4_session *ses)
{
struct nfs4_slot_table *tbl = &ses->fc_slot_table;
spin_lock(&tbl->slot_tbl_lock);
set_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state);
if (tbl->highest_used_slotid != -1) {
INIT_COMPLETION(ses->complete);
spin_unlock(&tbl->slot_tbl_lock);
return wait_for_completion_interruptible(&ses->complete);
}
spin_unlock(&tbl->slot_tbl_lock);
return 0;
}
int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
{
int status;
status = nfs41_begin_drain_session(clp, clp->cl_session);
if (status != 0)
goto out;
status = nfs4_proc_exchange_id(clp, cred);
if (status != 0)
goto out;
status = nfs4_proc_create_session(clp);
if (status != 0)
goto out;
nfs41_end_drain_session(clp, clp->cl_session);
nfs41_setup_state_renewal(clp);
nfs_mark_client_ready(clp, NFS_CS_READY);
out:
return status;
}
struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp)
{
struct rpc_cred *cred;
@ -877,6 +939,10 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
case -NFS4ERR_EXPIRED:
case -NFS4ERR_NO_GRACE:
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
goto out;
default:
printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
@ -959,6 +1025,10 @@ restart:
case -NFS4ERR_NO_GRACE:
nfs4_state_mark_reclaim_nograce(sp->so_client, state);
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
goto out_err;
}
nfs4_put_open_state(state);
@ -1011,6 +1081,14 @@ static void nfs4_state_start_reclaim_reboot(struct nfs_client *clp)
nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_reboot);
}
static void nfs4_reclaim_complete(struct nfs_client *clp,
const struct nfs4_state_recovery_ops *ops)
{
/* Notify the server we're done reclaiming our state */
if (ops->reclaim_complete)
(void)ops->reclaim_complete(clp);
}
static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
{
struct nfs4_state_owner *sp;
@ -1020,6 +1098,9 @@ static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
return;
nfs4_reclaim_complete(clp,
nfs4_reboot_recovery_ops[clp->cl_minorversion]);
for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
spin_lock(&sp->so_lock);
@ -1046,25 +1127,25 @@ static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp)
nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
}
static void nfs4_state_end_reclaim_nograce(struct nfs_client *clp)
{
clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
}
static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
{
switch (error) {
case -NFS4ERR_CB_PATH_DOWN:
nfs_handle_cb_pathdown(clp);
break;
return 0;
case -NFS4ERR_NO_GRACE:
nfs4_state_end_reclaim_reboot(clp);
return 0;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_LEASE_MOVED:
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
nfs4_state_end_reclaim_reboot(clp);
nfs4_state_start_reclaim_reboot(clp);
break;
case -NFS4ERR_EXPIRED:
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
nfs4_state_start_reclaim_nograce(clp);
break;
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
@ -1072,8 +1153,11 @@ static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_SEQ_FALSE_RETRY:
case -NFS4ERR_SEQ_MISORDERED:
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
/* Zero session reset errors */
return 0;
}
return error;
}
static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops)
@ -1093,8 +1177,7 @@ restart:
if (status < 0) {
set_bit(ops->owner_flag_bit, &sp->so_flags);
nfs4_put_state_owner(sp);
nfs4_recovery_handle_error(clp, status);
return status;
return nfs4_recovery_handle_error(clp, status);
}
nfs4_put_state_owner(sp);
goto restart;
@ -1124,8 +1207,7 @@ static int nfs4_check_lease(struct nfs_client *clp)
status = ops->renew_lease(clp, cred);
put_rpccred(cred);
out:
nfs4_recovery_handle_error(clp, status);
return status;
return nfs4_recovery_handle_error(clp, status);
}
static int nfs4_reclaim_lease(struct nfs_client *clp)
@ -1151,55 +1233,65 @@ static int nfs4_reclaim_lease(struct nfs_client *clp)
}
#ifdef CONFIG_NFS_V4_1
static void nfs4_session_recovery_handle_error(struct nfs_client *clp, int err)
void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
{
switch (err) {
case -NFS4ERR_STALE_CLIENTID:
if (!flags)
return;
else if (flags & SEQ4_STATUS_RESTART_RECLAIM_NEEDED) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
}
nfs4_state_start_reclaim_reboot(clp);
nfs4_schedule_state_recovery(clp);
} else if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED |
SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED |
SEQ4_STATUS_ADMIN_STATE_REVOKED |
SEQ4_STATUS_RECALLABLE_STATE_REVOKED |
SEQ4_STATUS_LEASE_MOVED)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
nfs4_state_start_reclaim_nograce(clp);
nfs4_schedule_state_recovery(clp);
} else if (flags & (SEQ4_STATUS_CB_PATH_DOWN |
SEQ4_STATUS_BACKCHANNEL_FAULT |
SEQ4_STATUS_CB_PATH_DOWN_SESSION))
nfs_expire_all_delegations(clp);
}
static int nfs4_reset_session(struct nfs_client *clp)
{
struct nfs4_session *ses = clp->cl_session;
int status;
status = nfs41_begin_drain_session(clp, ses);
if (status != 0)
return status;
status = nfs4_proc_destroy_session(clp->cl_session);
if (status && status != -NFS4ERR_BADSESSION &&
status != -NFS4ERR_DEADSESSION) {
nfs4_session_recovery_handle_error(clp, status);
status = nfs4_recovery_handle_error(clp, status);
goto out;
}
memset(clp->cl_session->sess_id.data, 0, NFS4_MAX_SESSIONID_LEN);
status = nfs4_proc_create_session(clp, 1);
status = nfs4_proc_create_session(clp);
if (status)
nfs4_session_recovery_handle_error(clp, status);
/* fall through*/
status = nfs4_recovery_handle_error(clp, status);
out:
/* Wake up the next rpc task even on error */
rpc_wake_up_next(&clp->cl_session->fc_slot_table.slot_tbl_waitq);
return status;
}
static int nfs4_initialize_session(struct nfs_client *clp)
{
int status;
status = nfs4_proc_create_session(clp, 0);
if (!status) {
nfs_mark_client_ready(clp, NFS_CS_READY);
} else if (status == -NFS4ERR_STALE_CLIENTID) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
} else {
nfs_mark_client_ready(clp, status);
/*
* Let the state manager reestablish state
* without waking other tasks yet.
*/
if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
/* Wake up the next rpc task */
nfs41_end_drain_session(clp, ses);
if (status == 0)
nfs41_setup_state_renewal(clp);
}
return status;
}
#else /* CONFIG_NFS_V4_1 */
static int nfs4_reset_session(struct nfs_client *clp) { return 0; }
static int nfs4_initialize_session(struct nfs_client *clp) { return 0; }
#endif /* CONFIG_NFS_V4_1 */
/* Set NFS4CLNT_LEASE_EXPIRED for all v4.0 errors and for recoverable errors
@ -1234,7 +1326,8 @@ static void nfs4_state_manager(struct nfs_client *clp)
status = nfs4_reclaim_lease(clp);
if (status) {
nfs4_set_lease_expired(clp, status);
if (status == -EAGAIN)
if (test_bit(NFS4CLNT_LEASE_EXPIRED,
&clp->cl_state))
continue;
if (clp->cl_cons_state ==
NFS_CS_SESSION_INITING)
@ -1242,55 +1335,51 @@ static void nfs4_state_manager(struct nfs_client *clp)
goto out_error;
}
clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
}
if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {
status = nfs4_check_lease(clp);
if (status != 0)
if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
continue;
}
/* Initialize or reset the session */
if (test_and_clear_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state)
&& nfs4_has_session(clp)) {
if (clp->cl_cons_state == NFS_CS_SESSION_INITING)
status = nfs4_initialize_session(clp);
else
status = nfs4_reset_session(clp);
if (status) {
if (status == -NFS4ERR_STALE_CLIENTID)
continue;
if (status < 0 && status != -NFS4ERR_CB_PATH_DOWN)
goto out_error;
}
}
/* Initialize or reset the session */
if (test_and_clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)
&& nfs4_has_session(clp)) {
status = nfs4_reset_session(clp);
if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
continue;
if (status < 0)
goto out_error;
}
/* First recover reboot state... */
if (test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) {
if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) {
status = nfs4_do_reclaim(clp,
nfs4_reboot_recovery_ops[clp->cl_minorversion]);
if (status == -NFS4ERR_STALE_CLIENTID)
continue;
if (test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))
if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) ||
test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
continue;
nfs4_state_end_reclaim_reboot(clp);
continue;
if (test_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state))
continue;
if (status < 0)
goto out_error;
}
/* Now recover expired state... */
if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) {
status = nfs4_do_reclaim(clp,
nfs4_nograce_recovery_ops[clp->cl_minorversion]);
if (status < 0) {
set_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
if (status == -NFS4ERR_STALE_CLIENTID)
continue;
if (status == -NFS4ERR_EXPIRED)
continue;
if (test_bit(NFS4CLNT_SESSION_SETUP,
&clp->cl_state))
continue;
if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) ||
test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) ||
test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
continue;
if (status < 0)
goto out_error;
} else
nfs4_state_end_reclaim_nograce(clp);
continue;
}
if (test_and_clear_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) {
@ -1309,8 +1398,6 @@ static void nfs4_state_manager(struct nfs_client *clp)
out_error:
printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s"
" with error %d\n", clp->cl_hostname, -status);
if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
nfs4_state_end_reclaim_reboot(clp);
nfs4_clear_state_manager_bit(clp);
}

135
fs/nfs/nfs4xdr.c
View file

@ -46,11 +46,13 @@
#include <linux/proc_fs.h>
#include <linux/kdev_t.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_idmap.h>
#include "nfs4_fs.h"
#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_XDR
@ -134,7 +136,7 @@ static int nfs4_stat_to_errno(int);
#define decode_lookup_maxsz (op_decode_hdr_maxsz)
#define encode_share_access_maxsz \
(2)
#define encode_createmode_maxsz (1 + encode_attrs_maxsz)
#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
#define encode_open_maxsz (op_encode_hdr_maxsz + \
@ -299,6 +301,8 @@ static int nfs4_stat_to_errno(int);
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
@ -676,6 +680,25 @@ static int nfs4_stat_to_errno(int);
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_reclaim_complete_maxsz)
#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_reclaim_complete_maxsz)
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
encode_sequence_maxsz +
encode_putfh_maxsz +
encode_getattr_maxsz) *
XDR_UNIT);
const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_decode_hdr_maxsz +
decode_sequence_maxsz +
decode_putfh_maxsz) *
XDR_UNIT);
#endif /* CONFIG_NFS_V4_1 */
static const umode_t nfs_type2fmt[] = {
@ -1140,6 +1163,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena
static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
__be32 *p;
struct nfs_client *clp;
p = reserve_space(xdr, 4);
switch(arg->open_flags & O_EXCL) {
@ -1148,8 +1172,23 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op
encode_attrs(xdr, arg->u.attrs, arg->server);
break;
default:
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
encode_nfs4_verifier(xdr, &arg->u.verifier);
clp = arg->server->nfs_client;
if (clp->cl_minorversion > 0) {
if (nfs4_has_persistent_session(clp)) {
*p = cpu_to_be32(NFS4_CREATE_GUARDED);
encode_attrs(xdr, arg->u.attrs, arg->server);
} else {
struct iattr dummy;
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
encode_nfs4_verifier(xdr, &arg->u.verifier);
dummy.ia_valid = 0;
encode_attrs(xdr, &dummy, arg->server);
}
} else {
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
encode_nfs4_verifier(xdr, &arg->u.verifier);
}
}
}
@ -1592,6 +1631,19 @@ static void encode_destroy_session(struct xdr_stream *xdr,
hdr->nops++;
hdr->replen += decode_destroy_session_maxsz;
}
static void encode_reclaim_complete(struct xdr_stream *xdr,
struct nfs41_reclaim_complete_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
*p++ = cpu_to_be32(args->one_fs);
hdr->nops++;
hdr->replen += decode_reclaim_complete_maxsz;
}
#endif /* CONFIG_NFS_V4_1 */
static void encode_sequence(struct xdr_stream *xdr,
@ -2096,7 +2148,7 @@ nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
encode_compound_hdr(&xdr, req, &hdr);
encode_sequence(&xdr, &args->seq_args, &hdr);
encode_putfh(&xdr, args->fh, &hdr);
replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;
replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
@ -2420,6 +2472,26 @@ static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
encode_nops(&hdr);
return 0;
}
/*
* a RECLAIM_COMPLETE request
*/
static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
struct nfs41_reclaim_complete_args *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args)
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, req, &hdr);
encode_sequence(&xdr, &args->seq_args, &hdr);
encode_reclaim_complete(&xdr, args, &hdr);
encode_nops(&hdr);
return 0;
}
#endif /* CONFIG_NFS_V4_1 */
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
@ -4528,6 +4600,11 @@ static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
{
return decode_op_hdr(xdr, OP_DESTROY_SESSION);
}
static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
{
return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
}
#endif /* CONFIG_NFS_V4_1 */
static int decode_sequence(struct xdr_stream *xdr,
@ -4583,8 +4660,8 @@ static int decode_sequence(struct xdr_stream *xdr,
dummy = be32_to_cpup(p++);
/* target highest slot id - currently not processed */
dummy = be32_to_cpup(p++);
/* result flags - currently not processed */
dummy = be32_to_cpup(p);
/* result flags */
res->sr_status_flags = be32_to_cpup(p);
status = 0;
out_err:
res->sr_status = status;
@ -5309,7 +5386,7 @@ out:
}
/*
* FSINFO request
* Decode FSINFO response
*/
static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
struct nfs4_fsinfo_res *res)
@ -5330,7 +5407,7 @@ static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
}
/*
* PATHCONF request
* Decode PATHCONF response
*/
static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
struct nfs4_pathconf_res *res)
@ -5351,7 +5428,7 @@ static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
}
/*
* STATFS request
* Decode STATFS response
*/
static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
struct nfs4_statfs_res *res)
@ -5372,7 +5449,7 @@ static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
}
/*
* GETATTR_BITMAP request
* Decode GETATTR_BITMAP response
*/
static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
{
@ -5411,7 +5488,7 @@ static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
}
/*
* a SETCLIENTID request
* Decode SETCLIENTID response
*/
static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
struct nfs_client *clp)
@ -5428,7 +5505,7 @@ static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
}
/*
* a SETCLIENTID_CONFIRM request
* Decode SETCLIENTID_CONFIRM response
*/
static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
{
@ -5448,7 +5525,7 @@ static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, str
}
/*
* DELEGRETURN request
* Decode DELEGRETURN response
*/
static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
{
@ -5474,7 +5551,7 @@ out:
}
/*
* FS_LOCATIONS request
* Decode FS_LOCATIONS response
*/
static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
struct nfs4_fs_locations_res *res)
@ -5504,7 +5581,7 @@ out:
#if defined(CONFIG_NFS_V4_1)
/*
* EXCHANGE_ID request
* Decode EXCHANGE_ID response
*/
static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
void *res)
@ -5521,7 +5598,7 @@ static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
}
/*
* a CREATE_SESSION request
* Decode CREATE_SESSION response
*/
static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
struct nfs41_create_session_res *res)
@ -5538,7 +5615,7 @@ static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
}
/*
* a DESTROY_SESSION request
* Decode DESTROY_SESSION response
*/
static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
void *dummy)
@ -5555,7 +5632,7 @@ static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
}
/*
* a SEQUENCE request
* Decode SEQUENCE response
*/
static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
struct nfs4_sequence_res *res)
@ -5572,7 +5649,7 @@ static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
}
/*
* a GET_LEASE_TIME request
* Decode GET_LEASE_TIME response
*/
static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
struct nfs4_get_lease_time_res *res)
@ -5591,6 +5668,25 @@ static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
status = decode_fsinfo(&xdr, res->lr_fsinfo);
return status;
}
/*
* Decode RECLAIM_COMPLETE response
*/
static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
struct nfs41_reclaim_complete_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_sequence(&xdr, &res->seq_res, rqstp);
if (!status)
status = decode_reclaim_complete(&xdr, (void *)NULL);
return status;
}
#endif /* CONFIG_NFS_V4_1 */
__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
@ -5767,6 +5863,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
PROC(SEQUENCE, enc_sequence, dec_sequence),
PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
#endif /* CONFIG_NFS_V4_1 */
};

12
fs/nfs/read.c
View file

@ -356,25 +356,19 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
struct nfs_readres *resp = &data->res;
if (resp->eof || resp->count == argp->count)
goto out;
return;
/* This is a short read! */
nfs_inc_stats(data->inode, NFSIOS_SHORTREAD);
/* Has the server at least made some progress? */
if (resp->count == 0)
goto out;
return;
/* Yes, so retry the read at the end of the data */
argp->offset += resp->count;
argp->pgbase += resp->count;
argp->count -= resp->count;
nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
return;
out:
nfs4_sequence_free_slot(NFS_SERVER(data->inode)->nfs_client,
&data->res.seq_res);
return;
nfs_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
}
/*

104
fs/nfs/super.c
View file

@ -175,14 +175,16 @@ static const match_table_t nfs_mount_option_tokens = {
};
enum {
Opt_xprt_udp, Opt_xprt_tcp, Opt_xprt_rdma,
Opt_xprt_udp, Opt_xprt_udp6, Opt_xprt_tcp, Opt_xprt_tcp6, Opt_xprt_rdma,
Opt_xprt_err
};
static const match_table_t nfs_xprt_protocol_tokens = {
{ Opt_xprt_udp, "udp" },
{ Opt_xprt_udp6, "udp6" },
{ Opt_xprt_tcp, "tcp" },
{ Opt_xprt_tcp6, "tcp6" },
{ Opt_xprt_rdma, "rdma" },
{ Opt_xprt_err, NULL }
@ -492,6 +494,45 @@ static const char *nfs_pseudoflavour_to_name(rpc_authflavor_t flavour)
return sec_flavours[i].str;
}
static void nfs_show_mountd_netid(struct seq_file *m, struct nfs_server *nfss,
int showdefaults)
{
struct sockaddr *sap = (struct sockaddr *) &nfss->mountd_address;
seq_printf(m, ",mountproto=");
switch (sap->sa_family) {
case AF_INET:
switch (nfss->mountd_protocol) {
case IPPROTO_UDP:
seq_printf(m, RPCBIND_NETID_UDP);
break;
case IPPROTO_TCP:
seq_printf(m, RPCBIND_NETID_TCP);
break;
default:
if (showdefaults)
seq_printf(m, "auto");
}
break;
case AF_INET6:
switch (nfss->mountd_protocol) {
case IPPROTO_UDP:
seq_printf(m, RPCBIND_NETID_UDP6);
break;
case IPPROTO_TCP:
seq_printf(m, RPCBIND_NETID_TCP6);
break;
default:
if (showdefaults)
seq_printf(m, "auto");
}
break;
default:
if (showdefaults)
seq_printf(m, "auto");
}
}
static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
int showdefaults)
{
@ -505,7 +546,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
}
case AF_INET6: {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
seq_printf(m, ",mountaddr=%pI6", &sin6->sin6_addr);
seq_printf(m, ",mountaddr=%pI6c", &sin6->sin6_addr);
break;
}
default:
@ -518,17 +559,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
if (nfss->mountd_port || showdefaults)
seq_printf(m, ",mountport=%u", nfss->mountd_port);
switch (nfss->mountd_protocol) {
case IPPROTO_UDP:
seq_printf(m, ",mountproto=udp");
break;
case IPPROTO_TCP:
seq_printf(m, ",mountproto=tcp");
break;
default:
if (showdefaults)
seq_printf(m, ",mountproto=auto");
}
nfs_show_mountd_netid(m, nfss, showdefaults);
}
/*
@ -578,7 +609,7 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
seq_puts(m, nfs_infop->nostr);
}
seq_printf(m, ",proto=%s",
rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO));
rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID));
if (version == 4) {
if (nfss->port != NFS_PORT)
seq_printf(m, ",port=%u", nfss->port);
@ -714,8 +745,6 @@ static void nfs_umount_begin(struct super_block *sb)
struct nfs_server *server;
struct rpc_clnt *rpc;
lock_kernel();
server = NFS_SB(sb);
/* -EIO all pending I/O */
rpc = server->client_acl;
@ -724,8 +753,6 @@ static void nfs_umount_begin(struct super_block *sb)
rpc = server->client;
if (!IS_ERR(rpc))
rpc_killall_tasks(rpc);
unlock_kernel();
}
static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(unsigned int version)
@ -734,8 +761,6 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(unsigned int ve
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data) {
data->rsize = NFS_MAX_FILE_IO_SIZE;
data->wsize = NFS_MAX_FILE_IO_SIZE;
data->acregmin = NFS_DEF_ACREGMIN;
data->acregmax = NFS_DEF_ACREGMAX;
data->acdirmin = NFS_DEF_ACDIRMIN;
@ -887,6 +912,8 @@ static int nfs_parse_mount_options(char *raw,
{
char *p, *string, *secdata;
int rc, sloppy = 0, invalid_option = 0;
unsigned short protofamily = AF_UNSPEC;
unsigned short mountfamily = AF_UNSPEC;
if (!raw) {
dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
@ -1232,12 +1259,17 @@ static int nfs_parse_mount_options(char *raw,
token = match_token(string,
nfs_xprt_protocol_tokens, args);
protofamily = AF_INET;
switch (token) {
case Opt_xprt_udp6:
protofamily = AF_INET6;
case Opt_xprt_udp:
mnt->flags &= ~NFS_MOUNT_TCP;
mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
kfree(string);
break;
case Opt_xprt_tcp6:
protofamily = AF_INET6;
case Opt_xprt_tcp:
mnt->flags |= NFS_MOUNT_TCP;
mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
@ -1265,10 +1297,15 @@ static int nfs_parse_mount_options(char *raw,
nfs_xprt_protocol_tokens, args);
kfree(string);
mountfamily = AF_INET;
switch (token) {
case Opt_xprt_udp6:
mountfamily = AF_INET6;
case Opt_xprt_udp:
mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_xprt_tcp6:
mountfamily = AF_INET6;
case Opt_xprt_tcp:
mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
break;
@ -1367,8 +1404,33 @@ static int nfs_parse_mount_options(char *raw,
if (!sloppy && invalid_option)
return 0;
/*
* verify that any proto=/mountproto= options match the address
* familiies in the addr=/mountaddr= options.
*/
if (protofamily != AF_UNSPEC &&
protofamily != mnt->nfs_server.address.ss_family)
goto out_proto_mismatch;
if (mountfamily != AF_UNSPEC) {
if (mnt->mount_server.addrlen) {
if (mountfamily != mnt->mount_server.address.ss_family)
goto out_mountproto_mismatch;
} else {
if (mountfamily != mnt->nfs_server.address.ss_family)
goto out_mountproto_mismatch;
}
}
return 1;
out_mountproto_mismatch:
printk(KERN_INFO "NFS: mount server address does not match mountproto= "
"option\n");
return 0;
out_proto_mismatch:
printk(KERN_INFO "NFS: server address does not match proto= option\n");
return 0;
out_invalid_address:
printk(KERN_INFO "NFS: bad IP address specified: %s\n", p);
return 0;
@ -1881,7 +1943,6 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
if (data == NULL)
return -ENOMEM;
lock_kernel();
/* fill out struct with values from existing mount */
data->flags = nfss->flags;
data->rsize = nfss->rsize;
@ -1907,7 +1968,6 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
error = nfs_compare_remount_data(nfss, data);
out:
kfree(data);
unlock_kernel();
return error;
}

2
fs/nfs/unlink.c
View file

@ -83,7 +83,7 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
struct inode *dir = data->dir;
if (!NFS_PROTO(dir)->unlink_done(task, dir))
nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client);
nfs_restart_rpc(task, NFS_SERVER(dir)->nfs_client);
}
/**

8
fs/nfs/write.c
View file

@ -1216,7 +1216,7 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
*/
argp->stable = NFS_FILE_SYNC;
}
nfs4_restart_rpc(task, server->nfs_client);
nfs_restart_rpc(task, server->nfs_client);
return -EAGAIN;
}
if (time_before(complain, jiffies)) {
@ -1228,7 +1228,6 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
/* Can't do anything about it except throw an error. */
task->tk_status = -EIO;
}
nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
return 0;
}
@ -1612,15 +1611,16 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
if (ret)
goto out_unlock;
page_cache_get(newpage);
spin_lock(&mapping->host->i_lock);
req->wb_page = newpage;
SetPagePrivate(newpage);
set_page_private(newpage, page_private(page));
set_page_private(newpage, (unsigned long)req);
ClearPagePrivate(page);
set_page_private(page, 0);
spin_unlock(&mapping->host->i_lock);
page_cache_release(page);
out_unlock:
nfs_clear_page_tag_locked(req);
nfs_release_request(req);
out:
return ret;
}

3
include/linux/nfs4.h
View file

@ -128,6 +128,8 @@
#define SEQ4_STATUS_RECALLABLE_STATE_REVOKED 0x00000040
#define SEQ4_STATUS_LEASE_MOVED 0x00000080
#define SEQ4_STATUS_RESTART_RECLAIM_NEEDED 0x00000100
#define SEQ4_STATUS_CB_PATH_DOWN_SESSION 0x00000200
#define SEQ4_STATUS_BACKCHANNEL_FAULT 0x00000400
#define NFS4_MAX_UINT64 (~(u64)0)
@ -528,6 +530,7 @@ enum {
NFSPROC4_CLNT_DESTROY_SESSION,
NFSPROC4_CLNT_SEQUENCE,
NFSPROC4_CLNT_GET_LEASE_TIME,
NFSPROC4_CLNT_RECLAIM_COMPLETE,
};
/* nfs41 types */

1
include/linux/nfs_fs_sb.h
View file

@ -209,6 +209,7 @@ struct nfs4_session {
unsigned long session_state;
u32 hash_alg;
u32 ssv_len;
struct completion complete;
/* The fore and back channel */
struct nfs4_channel_attrs fc_attrs;

13
include/linux/nfs_xdr.h
View file

@ -170,8 +170,9 @@ struct nfs4_sequence_args {
struct nfs4_sequence_res {
struct nfs4_session *sr_session;
u8 sr_slotid; /* slot used to send request */
unsigned long sr_renewal_time;
int sr_status; /* sequence operation status */
unsigned long sr_renewal_time;
u32 sr_status_flags;
};
struct nfs4_get_lease_time_args {
@ -938,6 +939,16 @@ struct nfs41_create_session_args {
struct nfs41_create_session_res {
struct nfs_client *client;
};
struct nfs41_reclaim_complete_args {
/* In the future extend to include curr_fh for use with migration */
unsigned char one_fs:1;
struct nfs4_sequence_args seq_args;
};
struct nfs41_reclaim_complete_res {
struct nfs4_sequence_res seq_res;
};
#endif /* CONFIG_NFS_V4_1 */
struct nfs_page;

2
include/linux/sunrpc/sched.h
View file

@ -130,12 +130,14 @@ struct rpc_task_setup {
#define RPC_TASK_DYNAMIC 0x0080 /* task was kmalloc'ed */
#define RPC_TASK_KILLED 0x0100 /* task was killed */
#define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */
#define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */
#define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC)
#define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER)
#define RPC_DO_ROOTOVERRIDE(t) ((t)->tk_flags & RPC_TASK_ROOTCREDS)
#define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED)
#define RPC_IS_SOFT(t) ((t)->tk_flags & RPC_TASK_SOFT)
#define RPC_IS_SOFTCONN(t) ((t)->tk_flags & RPC_TASK_SOFTCONN)
#define RPC_TASK_RUNNING 0
#define RPC_TASK_QUEUED 1

10
net/sunrpc/addr.c
View file

@ -55,16 +55,8 @@ static size_t rpc_ntop6_noscopeid(const struct sockaddr *sap,
/*
* RFC 4291, Section 2.2.1
*
* To keep the result as short as possible, especially
* since we don't shorthand, we don't want leading zeros
* in each halfword, so avoid %pI6.
*/
return snprintf(buf, buflen, "%x:%x:%x:%x:%x:%x:%x:%x",
ntohs(addr->s6_addr16[0]), ntohs(addr->s6_addr16[1]),
ntohs(addr->s6_addr16[2]), ntohs(addr->s6_addr16[3]),
ntohs(addr->s6_addr16[4]), ntohs(addr->s6_addr16[5]),
ntohs(addr->s6_addr16[6]), ntohs(addr->s6_addr16[7]));
return snprintf(buf, buflen, "%pI6c", addr);
}
static size_t rpc_ntop6(const struct sockaddr *sap,

39
net/sunrpc/auth.c
View file

@ -123,16 +123,19 @@ rpcauth_unhash_cred_locked(struct rpc_cred *cred)
clear_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags);
}
static void
static int
rpcauth_unhash_cred(struct rpc_cred *cred)
{
spinlock_t *cache_lock;
int ret;
cache_lock = &cred->cr_auth->au_credcache->lock;
spin_lock(cache_lock);
if (atomic_read(&cred->cr_count) == 0)
ret = atomic_read(&cred->cr_count) == 0;
if (ret)
rpcauth_unhash_cred_locked(cred);
spin_unlock(cache_lock);
return ret;
}
/*
@ -446,31 +449,35 @@ void
put_rpccred(struct rpc_cred *cred)
{
/* Fast path for unhashed credentials */
if (test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0)
goto need_lock;
if (!atomic_dec_and_test(&cred->cr_count))
if (test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) == 0) {
if (atomic_dec_and_test(&cred->cr_count))
cred->cr_ops->crdestroy(cred);
return;
goto out_destroy;
need_lock:
}
if (!atomic_dec_and_lock(&cred->cr_count, &rpc_credcache_lock))
return;
if (!list_empty(&cred->cr_lru)) {
number_cred_unused--;
list_del_init(&cred->cr_lru);
}
if (test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) == 0)
rpcauth_unhash_cred(cred);
if (test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0) {
cred->cr_expire = jiffies;
list_add_tail(&cred->cr_lru, &cred_unused);
number_cred_unused++;
spin_unlock(&rpc_credcache_lock);
return;
if (test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0) {
cred->cr_expire = jiffies;
list_add_tail(&cred->cr_lru, &cred_unused);
number_cred_unused++;
goto out_nodestroy;
}
if (!rpcauth_unhash_cred(cred)) {
/* We were hashed and someone looked us up... */
goto out_nodestroy;
}
}
spin_unlock(&rpc_credcache_lock);
out_destroy:
cred->cr_ops->crdestroy(cred);
return;
out_nodestroy:
spin_unlock(&rpc_credcache_lock);
}
EXPORT_SYMBOL_GPL(put_rpccred);

6
net/sunrpc/auth_gss/auth_gss.c
View file

@ -304,7 +304,7 @@ __gss_find_upcall(struct rpc_inode *rpci, uid_t uid)
* to that upcall instead of adding the new upcall.
*/
static inline struct gss_upcall_msg *
gss_add_msg(struct gss_auth *gss_auth, struct gss_upcall_msg *gss_msg)
gss_add_msg(struct gss_upcall_msg *gss_msg)
{
struct rpc_inode *rpci = gss_msg->inode;
struct inode *inode = &rpci->vfs_inode;
@ -445,7 +445,7 @@ gss_setup_upcall(struct rpc_clnt *clnt, struct gss_auth *gss_auth, struct rpc_cr
gss_new = gss_alloc_msg(gss_auth, uid, clnt, gss_cred->gc_machine_cred);
if (IS_ERR(gss_new))
return gss_new;
gss_msg = gss_add_msg(gss_auth, gss_new);
gss_msg = gss_add_msg(gss_new);
if (gss_msg == gss_new) {
struct inode *inode = &gss_new->inode->vfs_inode;
int res = rpc_queue_upcall(inode, &gss_new->msg);
@ -485,7 +485,7 @@ gss_refresh_upcall(struct rpc_task *task)
dprintk("RPC: %5u gss_refresh_upcall for uid %u\n", task->tk_pid,
cred->cr_uid);
gss_msg = gss_setup_upcall(task->tk_client, gss_auth, cred);
if (IS_ERR(gss_msg) == -EAGAIN) {
if (PTR_ERR(gss_msg) == -EAGAIN) {
/* XXX: warning on the first, under the assumption we
* shouldn't normally hit this case on a refresh. */
warn_gssd();

54
net/sunrpc/clnt.c
View file

@ -79,7 +79,7 @@ static void call_connect_status(struct rpc_task *task);
static __be32 *rpc_encode_header(struct rpc_task *task);
static __be32 *rpc_verify_header(struct rpc_task *task);
static int rpc_ping(struct rpc_clnt *clnt, int flags);
static int rpc_ping(struct rpc_clnt *clnt);
static void rpc_register_client(struct rpc_clnt *clnt)
{
@ -340,7 +340,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
return clnt;
if (!(args->flags & RPC_CLNT_CREATE_NOPING)) {
int err = rpc_ping(clnt, RPC_TASK_SOFT);
int err = rpc_ping(clnt);
if (err != 0) {
rpc_shutdown_client(clnt);
return ERR_PTR(err);
@ -528,7 +528,7 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
clnt->cl_prog = program->number;
clnt->cl_vers = version->number;
clnt->cl_stats = program->stats;
err = rpc_ping(clnt, RPC_TASK_SOFT);
err = rpc_ping(clnt);
if (err != 0) {
rpc_shutdown_client(clnt);
clnt = ERR_PTR(err);
@ -1060,7 +1060,7 @@ call_bind_status(struct rpc_task *task)
goto retry_timeout;
case -EPFNOSUPPORT:
/* server doesn't support any rpcbind version we know of */
dprintk("RPC: %5u remote rpcbind service unavailable\n",
dprintk("RPC: %5u unrecognized remote rpcbind service\n",
task->tk_pid);
break;
case -EPROTONOSUPPORT:
@ -1069,6 +1069,21 @@ call_bind_status(struct rpc_task *task)
task->tk_status = 0;
task->tk_action = call_bind;
return;
case -ECONNREFUSED: /* connection problems */
case -ECONNRESET:
case -ENOTCONN:
case -EHOSTDOWN:
case -EHOSTUNREACH:
case -ENETUNREACH:
case -EPIPE:
dprintk("RPC: %5u remote rpcbind unreachable: %d\n",
task->tk_pid, task->tk_status);
if (!RPC_IS_SOFTCONN(task)) {
rpc_delay(task, 5*HZ);
goto retry_timeout;
}
status = task->tk_status;
break;
default:
dprintk("RPC: %5u unrecognized rpcbind error (%d)\n",
task->tk_pid, -task->tk_status);
@ -1180,11 +1195,25 @@ static void
call_transmit_status(struct rpc_task *task)
{
task->tk_action = call_status;
/*
* Common case: success. Force the compiler to put this
* test first.
*/
if (task->tk_status == 0) {
xprt_end_transmit(task);
rpc_task_force_reencode(task);
return;
}
switch (task->tk_status) {
case -EAGAIN:
break;
default:
dprint_status(task);
xprt_end_transmit(task);
rpc_task_force_reencode(task);
break;
/*
* Special cases: if we've been waiting on the
* socket's write_space() callback, or if the
@ -1192,11 +1221,16 @@ call_transmit_status(struct rpc_task *task)
* then hold onto the transport lock.
*/
case -ECONNREFUSED:
case -ECONNRESET:
case -ENOTCONN:
case -EHOSTDOWN:
case -EHOSTUNREACH:
case -ENETUNREACH:
if (RPC_IS_SOFTCONN(task)) {
xprt_end_transmit(task);
rpc_exit(task, task->tk_status);
break;
}
case -ECONNRESET:
case -ENOTCONN:
case -EPIPE:
rpc_task_force_reencode(task);
}
@ -1346,6 +1380,10 @@ call_timeout(struct rpc_task *task)
dprintk("RPC: %5u call_timeout (major)\n", task->tk_pid);
task->tk_timeouts++;
if (RPC_IS_SOFTCONN(task)) {
rpc_exit(task, -ETIMEDOUT);
return;
}
if (RPC_IS_SOFT(task)) {
if (clnt->cl_chatty)
printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
@ -1675,14 +1713,14 @@ static struct rpc_procinfo rpcproc_null = {
.p_decode = rpcproc_decode_null,
};
static int rpc_ping(struct rpc_clnt *clnt, int flags)
static int rpc_ping(struct rpc_clnt *clnt)
{
struct rpc_message msg = {
.rpc_proc = &rpcproc_null,
};
int err;
msg.rpc_cred = authnull_ops.lookup_cred(NULL, NULL, 0);
err = rpc_call_sync(clnt, &msg, flags);
err = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT | RPC_TASK_SOFTCONN);
put_rpccred(msg.rpc_cred);
return err;
}

104
net/sunrpc/rpcb_clnt.c
View file

@ -20,6 +20,7 @@
#include <linux/in6.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/mutex.h>
#include <net/ipv6.h>
#include <linux/sunrpc/clnt.h>
@ -110,6 +111,9 @@ static void rpcb_getport_done(struct rpc_task *, void *);
static void rpcb_map_release(void *data);
static struct rpc_program rpcb_program;
static struct rpc_clnt * rpcb_local_clnt;
static struct rpc_clnt * rpcb_local_clnt4;
struct rpcbind_args {
struct rpc_xprt * r_xprt;
@ -163,21 +167,60 @@ static const struct sockaddr_in rpcb_inaddr_loopback = {
.sin_port = htons(RPCBIND_PORT),
};
static struct rpc_clnt *rpcb_create_local(struct sockaddr *addr,
size_t addrlen, u32 version)
static DEFINE_MUTEX(rpcb_create_local_mutex);
/*
* Returns zero on success, otherwise a negative errno value
* is returned.
*/
static int rpcb_create_local(void)
{
struct rpc_create_args args = {
.protocol = XPRT_TRANSPORT_UDP,
.address = addr,
.addrsize = addrlen,
.protocol = XPRT_TRANSPORT_TCP,
.address = (struct sockaddr *)&rpcb_inaddr_loopback,
.addrsize = sizeof(rpcb_inaddr_loopback),
.servername = "localhost",
.program = &rpcb_program,
.version = version,
.version = RPCBVERS_2,
.authflavor = RPC_AUTH_UNIX,
.flags = RPC_CLNT_CREATE_NOPING,
};
struct rpc_clnt *clnt, *clnt4;
int result = 0;
return rpc_create(&args);
if (rpcb_local_clnt)
return result;
mutex_lock(&rpcb_create_local_mutex);
if (rpcb_local_clnt)
goto out;
clnt = rpc_create(&args);
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create local rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
result = -PTR_ERR(clnt);
goto out;
}
/*
* This results in an RPC ping. On systems running portmapper,
* the v4 ping will fail. Proceed anyway, but disallow rpcb
* v4 upcalls.
*/
clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4);
if (IS_ERR(clnt4)) {
dprintk("RPC: failed to create local rpcbind v4 "
"cleint (errno %ld).\n", PTR_ERR(clnt4));
clnt4 = NULL;
}
rpcb_local_clnt = clnt;
rpcb_local_clnt4 = clnt4;
out:
mutex_unlock(&rpcb_create_local_mutex);
return result;
}
static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
@ -209,22 +252,13 @@ static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
return rpc_create(&args);
}
static int rpcb_register_call(const u32 version, struct rpc_message *msg)
static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg)
{
struct sockaddr *addr = (struct sockaddr *)&rpcb_inaddr_loopback;
size_t addrlen = sizeof(rpcb_inaddr_loopback);
struct rpc_clnt *rpcb_clnt;
int result, error = 0;
msg->rpc_resp = &result;
rpcb_clnt = rpcb_create_local(addr, addrlen, version);
if (!IS_ERR(rpcb_clnt)) {
error = rpc_call_sync(rpcb_clnt, msg, 0);
rpc_shutdown_client(rpcb_clnt);
} else
error = PTR_ERR(rpcb_clnt);
error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN);
if (error < 0) {
dprintk("RPC: failed to contact local rpcbind "
"server (errno %d).\n", -error);
@ -279,6 +313,11 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
struct rpc_message msg = {
.rpc_argp = &map,
};
int error;
error = rpcb_create_local();
if (error)
return error;
dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
"rpcbind\n", (port ? "" : "un"),
@ -288,7 +327,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
if (port)
msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET];
return rpcb_register_call(RPCBVERS_2, &msg);
return rpcb_register_call(rpcb_local_clnt, &msg);
}
/*
@ -313,7 +352,7 @@ static int rpcb_register_inet4(const struct sockaddr *sap,
if (port)
msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
result = rpcb_register_call(RPCBVERS_4, msg);
result = rpcb_register_call(rpcb_local_clnt4, msg);
kfree(map->r_addr);
return result;
}
@ -340,7 +379,7 @@ static int rpcb_register_inet6(const struct sockaddr *sap,
if (port)
msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
result = rpcb_register_call(RPCBVERS_4, msg);
result = rpcb_register_call(rpcb_local_clnt4, msg);
kfree(map->r_addr);
return result;
}
@ -356,7 +395,7 @@ static int rpcb_unregister_all_protofamilies(struct rpc_message *msg)
map->r_addr = "";
msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
return rpcb_register_call(RPCBVERS_4, msg);
return rpcb_register_call(rpcb_local_clnt4, msg);
}
/**
@ -414,6 +453,13 @@ int rpcb_v4_register(const u32 program, const u32 version,
struct rpc_message msg = {
.rpc_argp = &map,
};
int error;
error = rpcb_create_local();
if (error)
return error;
if (rpcb_local_clnt4 == NULL)
return -EPROTONOSUPPORT;
if (address == NULL)
return rpcb_unregister_all_protofamilies(&msg);
@ -491,7 +537,7 @@ static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbi
.rpc_message = &msg,
.callback_ops = &rpcb_getport_ops,
.callback_data = map,
.flags = RPC_TASK_ASYNC,
.flags = RPC_TASK_ASYNC | RPC_TASK_SOFTCONN,
};
return rpc_run_task(&task_setup_data);
@ -1027,3 +1073,15 @@ static struct rpc_program rpcb_program = {
.version = rpcb_version,
.stats = &rpcb_stats,
};
/**
* cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister
*
*/
void cleanup_rpcb_clnt(void)
{
if (rpcb_local_clnt4)
rpc_shutdown_client(rpcb_local_clnt4);
if (rpcb_local_clnt)
rpc_shutdown_client(rpcb_local_clnt);
}

3
net/sunrpc/sunrpc_syms.c
View file

@ -24,6 +24,8 @@
extern struct cache_detail ip_map_cache, unix_gid_cache;
extern void cleanup_rpcb_clnt(void);
static int __init
init_sunrpc(void)
{
@ -53,6 +55,7 @@ out:
static void __exit
cleanup_sunrpc(void)
{
cleanup_rpcb_clnt();
rpcauth_remove_module();
cleanup_socket_xprt();
svc_cleanup_xprt_sock();

4
net/sunrpc/xprt.c
View file

@ -700,6 +700,10 @@ void xprt_connect(struct rpc_task *task)
}
if (!xprt_lock_write(xprt, task))
return;
if (test_and_clear_bit(XPRT_CLOSE_WAIT, &xprt->state))
xprt->ops->close(xprt);
if (xprt_connected(xprt))
xprt_release_write(xprt, task);
else {

2
net/sunrpc/xprtsock.c
View file

@ -2019,7 +2019,7 @@ static void xs_connect(struct rpc_task *task)
if (xprt_test_and_set_connecting(xprt))
return;
if (transport->sock != NULL) {
if (transport->sock != NULL && !RPC_IS_SOFTCONN(task)) {
dprintk("RPC: xs_connect delayed xprt %p for %lu "
"seconds\n",
xprt, xprt->reestablish_timeout / HZ);