Commit bf97293e authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'nfs-for-3.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

   - Fix NFSv4 recovery so that it doesn't recover lost locks in cases
     such as lease loss due to a network partition, where doing so may
     result in data corruption.  Add a kernel parameter to control
     choice of legacy behaviour or not.
   - Performance improvements when 2 processes are writing to the same
     file.
   - Flush data to disk when an RPCSEC_GSS session timeout is imminent.
   - Implement NFSv4.1 SP4_MACH_CRED state protection to prevent other
     NFS clients from being able to manipulate our lease and file
     locking state.
   - Allow sharing of RPCSEC_GSS caches between different rpc clients.
   - Fix the broken NFSv4 security auto-negotiation between client and
     server.
   - Fix rmdir() to wait for outstanding sillyrename unlinks to complete
   - Add a tracepoint framework for debugging NFSv4 state recovery
     issues.
   - Add tracing to the generic NFS layer.
   - Add tracing for the SUNRPC socket connection state.
   - Clean up the rpc_pipefs mount/umount event management.
   - Merge more patches from Chuck in preparation for NFSv4 migration
     support"

* tag 'nfs-for-3.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (107 commits)
  NFSv4: use mach cred for SECINFO_NO_NAME w/ integrity
  NFS: nfs_compare_super shouldn't check the auth flavour unless 'sec=' was set
  NFSv4: Allow security autonegotiation for submounts
  NFSv4: Disallow security negotiation for lookups when 'sec=' is specified
  NFSv4: Fix security auto-negotiation
  NFS: Clean up nfs_parse_security_flavors()
  NFS: Clean up the auth flavour array mess
  NFSv4.1 Use MDS auth flavor for data server connection
  NFS: Don't check lock owner compatability unless file is locked (part 2)
  NFS: Don't check lock owner compatibility in writes unless file is locked
  nfs4: Map NFS4ERR_WRONG_CRED to EPERM
  nfs4.1: Add SP4_MACH_CRED write and commit support
  nfs4.1: Add SP4_MACH_CRED stateid support
  nfs4.1: Add SP4_MACH_CRED secinfo support
  nfs4.1: Add SP4_MACH_CRED cleanup support
  nfs4.1: Add state protection handler
  nfs4.1: Minimal SP4_MACH_CRED implementation
  SUNRPC: Replace pointer values with task->tk_pid and rpc_clnt->cl_clid
  SUNRPC: Add an identifier for struct rpc_clnt
  SUNRPC: Ensure rpc_task->tk_pid is available for tracepoints
  ...
parents 16d70e15 b1b3e136
......@@ -1898,6 +1898,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
will be sent.
The default is to send the implementation identification
information.
nfs.recover_lost_locks =
[NFSv4] Attempt to recover locks that were lost due
to a lease timeout on the server. Please note that
doing this risks data corruption, since there are
no guarantees that the file will remain unchanged
after the locks are lost.
If you want to enable the kernel legacy behaviour of
attempting to recover these locks, then set this
parameter to '1'.
The default parameter value of '0' causes the kernel
not to attempt recovery of lost locks.
nfsd.nfs4_disable_idmapping=
[NFSv4] When set to the default of '1', the NFSv4
......
......@@ -4,9 +4,10 @@
obj-$(CONFIG_NFS_FS) += nfs.o
CFLAGS_nfstrace.o += -I$(src)
nfs-y := client.o dir.o file.o getroot.o inode.o super.o \
direct.o pagelist.o read.o symlink.o unlink.o \
write.o namespace.o mount_clnt.o
write.o namespace.o mount_clnt.o nfstrace.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o
nfs-$(CONFIG_SYSCTL) += sysctl.o
nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
......@@ -19,12 +20,14 @@ nfsv3-y := nfs3super.o nfs3client.o nfs3proc.o nfs3xdr.o
nfsv3-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
obj-$(CONFIG_NFS_V4) += nfsv4.o
CFLAGS_nfs4trace.o += -I$(src)
nfsv4-y := nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o nfs4super.o nfs4file.o \
delegation.o idmap.o callback.o callback_xdr.o callback_proc.o \
nfs4namespace.o nfs4getroot.o nfs4client.o dns_resolve.o
nfs4namespace.o nfs4getroot.o nfs4client.o nfs4session.o \
dns_resolve.o nfs4trace.o
nfsv4-$(CONFIG_NFS_USE_LEGACY_DNS) += cache_lib.o
nfsv4-$(CONFIG_SYSCTL) += nfs4sysctl.o
nfsv4-$(CONFIG_NFS_V4_1) += nfs4session.o pnfs.o pnfs_dev.o
nfsv4-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
nfs_layout_nfsv41_files-y := nfs4filelayout.o nfs4filelayoutdev.o
......
......@@ -15,6 +15,7 @@
#include "internal.h"
#include "pnfs.h"
#include "nfs4session.h"
#include "nfs4trace.h"
#ifdef NFS_DEBUG
#define NFSDBG_FACILITY NFSDBG_CALLBACK
......@@ -93,6 +94,7 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
default:
res = htonl(NFS4ERR_RESOURCE);
}
trace_nfs4_recall_delegation(inode, -ntohl(res));
iput(inode);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
......@@ -301,14 +303,14 @@ validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
{
struct nfs4_slot *slot;
dprintk("%s enter. slotid %d seqid %d\n",
dprintk("%s enter. slotid %u seqid %u\n",
__func__, args->csa_slotid, args->csa_sequenceid);
if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS)
return htonl(NFS4ERR_BADSLOT);
slot = tbl->slots + args->csa_slotid;
dprintk("%s slot table seqid: %d\n", __func__, slot->seq_nr);
dprintk("%s slot table seqid: %u\n", __func__, slot->seq_nr);
/* Normal */
if (likely(args->csa_sequenceid == slot->seq_nr + 1)) {
......@@ -318,7 +320,7 @@ validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
/* Replay */
if (args->csa_sequenceid == slot->seq_nr) {
dprintk("%s seqid %d is a replay\n",
dprintk("%s seqid %u is a replay\n",
__func__, args->csa_sequenceid);
/* Signal process_op to set this error on next op */
if (args->csa_cachethis == 0)
......@@ -462,6 +464,7 @@ out:
} else
res->csr_status = status;
trace_nfs4_cb_sequence(args, res, status);
dprintk("%s: exit with status = %d res->csr_status %d\n", __func__,
ntohl(status), ntohl(res->csr_status));
return status;
......@@ -518,7 +521,7 @@ __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy,
if (!cps->clp) /* set in cb_sequence */
goto out;
dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %d\n",
dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %u\n",
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR),
args->crsa_target_highest_slotid);
......
......@@ -501,8 +501,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
&nn->nfs_client_list);
spin_unlock(&nn->nfs_client_lock);
new->cl_flags = cl_init->init_flags;
return rpc_ops->init_client(new, timeparms, ip_addr,
authflavour);
return rpc_ops->init_client(new, timeparms, ip_addr);
}
spin_unlock(&nn->nfs_client_lock);
......@@ -694,13 +693,12 @@ EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
* @clp: nfs_client to initialise
* @timeparms: timeout parameters for underlying RPC transport
* @ip_addr: IP presentation address (not used)
* @authflavor: authentication flavor for underlying RPC transport
*
* Returns pointer to an NFS client, or an ERR_PTR value.
*/
struct nfs_client *nfs_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr, rpc_authflavor_t authflavour)
const char *ip_addr)
{
int error;
......
......@@ -20,6 +20,7 @@
#include "nfs4_fs.h"
#include "delegation.h"
#include "internal.h"
#include "nfs4trace.h"
static void nfs_free_delegation(struct nfs_delegation *delegation)
{
......@@ -160,6 +161,7 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred,
spin_unlock(&delegation->lock);
put_rpccred(oldcred);
rcu_read_unlock();
trace_nfs4_reclaim_delegation(inode, res->delegation_type);
} else {
/* We appear to have raced with a delegation return. */
spin_unlock(&delegation->lock);
......@@ -344,6 +346,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
spin_lock(&inode->i_lock);
nfsi->cache_validity |= NFS_INO_REVAL_FORCED;
spin_unlock(&inode->i_lock);
trace_nfs4_set_delegation(inode, res->delegation_type);
out:
spin_unlock(&clp->cl_lock);
......
......@@ -43,6 +43,8 @@
#include "internal.h"
#include "fscache.h"
#include "nfstrace.h"
/* #define NFS_DEBUG_VERBOSE 1 */
static int nfs_opendir(struct inode *, struct file *);
......@@ -1100,7 +1102,9 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
if (IS_ERR(label))
goto out_error;
trace_nfs_lookup_revalidate_enter(dir, dentry, flags);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
trace_nfs_lookup_revalidate_exit(dir, dentry, flags, error);
if (error)
goto out_bad;
if (nfs_compare_fh(NFS_FH(inode), fhandle))
......@@ -1312,6 +1316,7 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
trace_nfs_lookup_enter(dir, dentry, flags);
nfs_block_sillyrename(parent);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
if (error == -ENOENT)
......@@ -1338,6 +1343,7 @@ no_entry:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_unblock_sillyrename:
nfs_unblock_sillyrename(parent);
trace_nfs_lookup_exit(dir, dentry, flags, error);
nfs4_label_free(label);
out:
nfs_free_fattr(fattr);
......@@ -1392,7 +1398,6 @@ static int nfs_finish_open(struct nfs_open_context *ctx,
nfs_file_set_open_context(file, ctx);
out:
put_nfs_open_context(ctx);
return err;
}
......@@ -1404,6 +1409,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
struct dentry *res;
struct iattr attr = { .ia_valid = ATTR_OPEN };
struct inode *inode;
unsigned int lookup_flags = 0;
int err;
/* Expect a negative dentry */
......@@ -1412,6 +1418,10 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
dfprintk(VFS, "NFS: atomic_open(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
err = nfs_check_flags(open_flags);
if (err)
return err;
/* NFS only supports OPEN on regular files */
if ((open_flags & O_DIRECTORY)) {
if (!d_unhashed(dentry)) {
......@@ -1422,6 +1432,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
*/
return -ENOENT;
}
lookup_flags = LOOKUP_OPEN|LOOKUP_DIRECTORY;
goto no_open;
}
......@@ -1442,12 +1453,14 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
if (IS_ERR(ctx))
goto out;
trace_nfs_atomic_open_enter(dir, ctx, open_flags);
nfs_block_sillyrename(dentry->d_parent);
inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr);
nfs_unblock_sillyrename(dentry->d_parent);
if (IS_ERR(inode)) {
put_nfs_open_context(ctx);
err = PTR_ERR(inode);
trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
put_nfs_open_context(ctx);
switch (err) {
case -ENOENT:
d_drop(dentry);
......@@ -1468,11 +1481,13 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
}
err = nfs_finish_open(ctx, ctx->dentry, file, open_flags, opened);
trace_nfs_atomic_open_exit(dir, ctx, open_flags, err);
put_nfs_open_context(ctx);
out:
return err;
no_open:
res = nfs_lookup(dir, dentry, 0);
res = nfs_lookup(dir, dentry, lookup_flags);
err = PTR_ERR(res);
if (IS_ERR(res))
goto out;
......@@ -1596,7 +1611,9 @@ int nfs_create(struct inode *dir, struct dentry *dentry,
attr.ia_mode = mode;
attr.ia_valid = ATTR_MODE;
trace_nfs_create_enter(dir, dentry, open_flags);
error = NFS_PROTO(dir)->create(dir, dentry, &attr, open_flags);
trace_nfs_create_exit(dir, dentry, open_flags, error);
if (error != 0)
goto out_err;
return 0;
......@@ -1624,7 +1641,9 @@ nfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
attr.ia_mode = mode;
attr.ia_valid = ATTR_MODE;
trace_nfs_mknod_enter(dir, dentry);
status = NFS_PROTO(dir)->mknod(dir, dentry, &attr, rdev);
trace_nfs_mknod_exit(dir, dentry, status);
if (status != 0)
goto out_err;
return 0;
......@@ -1648,7 +1667,9 @@ int nfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
attr.ia_valid = ATTR_MODE;
attr.ia_mode = mode | S_IFDIR;
trace_nfs_mkdir_enter(dir, dentry);
error = NFS_PROTO(dir)->mkdir(dir, dentry, &attr);
trace_nfs_mkdir_exit(dir, dentry, error);
if (error != 0)
goto out_err;
return 0;
......@@ -1671,12 +1692,21 @@ int nfs_rmdir(struct inode *dir, struct dentry *dentry)
dfprintk(VFS, "NFS: rmdir(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name);
/* Ensure the VFS deletes this inode */
if (error == 0 && dentry->d_inode != NULL)
clear_nlink(dentry->d_inode);
else if (error == -ENOENT)
nfs_dentry_handle_enoent(dentry);
trace_nfs_rmdir_enter(dir, dentry);
if (dentry->d_inode) {
nfs_wait_on_sillyrename(dentry);
error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name);
/* Ensure the VFS deletes this inode */
switch (error) {
case 0:
clear_nlink(dentry->d_inode);
break;
case -ENOENT:
nfs_dentry_handle_enoent(dentry);
}
} else
error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name);
trace_nfs_rmdir_exit(dir, dentry, error);
return error;
}
......@@ -1704,6 +1734,7 @@ static int nfs_safe_remove(struct dentry *dentry)
goto out;
}
trace_nfs_remove_enter(dir, dentry);
if (inode != NULL) {
NFS_PROTO(inode)->return_delegation(inode);
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
......@@ -1713,6 +1744,7 @@ static int nfs_safe_remove(struct dentry *dentry)
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
if (error == -ENOENT)
nfs_dentry_handle_enoent(dentry);
trace_nfs_remove_exit(dir, dentry, error);
out:
return error;
}
......@@ -1730,13 +1762,14 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry)
dfprintk(VFS, "NFS: unlink(%s/%ld, %s)\n", dir->i_sb->s_id,
dir->i_ino, dentry->d_name.name);
trace_nfs_unlink_enter(dir, dentry);
spin_lock(&dentry->d_lock);
if (d_count(dentry) > 1) {
spin_unlock(&dentry->d_lock);
/* Start asynchronous writeout of the inode */
write_inode_now(dentry->d_inode, 0);
error = nfs_sillyrename(dir, dentry);
return error;
goto out;
}
if (!d_unhashed(dentry)) {
__d_drop(dentry);
......@@ -1748,6 +1781,8 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry)
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
} else if (need_rehash)
d_rehash(dentry);
out:
trace_nfs_unlink_exit(dir, dentry, error);
return error;
}
EXPORT_SYMBOL_GPL(nfs_unlink);
......@@ -1794,7 +1829,9 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
memset(kaddr + pathlen, 0, PAGE_SIZE - pathlen);
kunmap_atomic(kaddr);
trace_nfs_symlink_enter(dir, dentry);
error = NFS_PROTO(dir)->symlink(dir, dentry, page, pathlen, &attr);
trace_nfs_symlink_exit(dir, dentry, error);
if (error != 0) {
dfprintk(VFS, "NFS: symlink(%s/%ld, %s, %s) error %d\n",
dir->i_sb->s_id, dir->i_ino,
......@@ -1829,6 +1866,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
dentry->d_parent->d_name.name, dentry->d_name.name);
trace_nfs_link_enter(inode, dir, dentry);
NFS_PROTO(inode)->return_delegation(inode);
d_drop(dentry);
......@@ -1837,6 +1875,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
ihold(inode);
d_add(dentry, inode);
}
trace_nfs_link_exit(inode, dir, dentry, error);
return error;
}
EXPORT_SYMBOL_GPL(nfs_link);
......@@ -1878,6 +1917,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
new_dentry->d_parent->d_name.name, new_dentry->d_name.name,
d_count(new_dentry));
trace_nfs_rename_enter(old_dir, old_dentry, new_dir, new_dentry);
/*
* 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
......@@ -1924,6 +1964,8 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
out:
if (rehash)
d_rehash(rehash);
trace_nfs_rename_exit(old_dir, old_dentry,
new_dir, new_dentry, error);
if (!error) {
if (new_inode != NULL)
nfs_drop_nlink(new_inode);
......@@ -2173,9 +2215,11 @@ static int nfs_do_access(struct inode *inode, struct rpc_cred *cred, int mask)
struct nfs_access_entry cache;
int status;
trace_nfs_access_enter(inode);
status = nfs_access_get_cached(inode, cred, &cache);
if (status == 0)
goto out;
goto out_cached;
/* Be clever: ask server to check for all possible rights */
cache.mask = MAY_EXEC | MAY_WRITE | MAY_READ;
......@@ -2188,13 +2232,15 @@ static int nfs_do_access(struct inode *inode, struct rpc_cred *cred, int mask)
if (!S_ISDIR(inode->i_mode))
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
}
return status;
goto out;
}
nfs_access_add_cache(inode, &cache);
out_cached:
if ((mask & ~cache.mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) != 0)
status = -EACCES;
out:
if ((mask & ~cache.mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) == 0)
return 0;
return -EACCES;
trace_nfs_access_exit(inode, status);
return status;
}
static int nfs_open_permission_mask(int openflags)
......@@ -2240,11 +2286,6 @@ int nfs_permission(struct inode *inode, int mask)
case S_IFLNK:
goto out;
case S_IFREG:
/* NFSv4 has atomic_open... */
if (nfs_server_capable(inode, NFS_CAP_ATOMIC_OPEN)
&& (mask & MAY_OPEN)
&& !(mask & MAY_EXEC))
goto out;
break;
case S_IFDIR:
/*
......
......@@ -37,6 +37,8 @@
#include "iostat.h"
#include "fscache.h"
#include "nfstrace.h"
#define NFSDBG_FACILITY NFSDBG_FILE
static const struct vm_operations_struct nfs_file_vm_ops;
......@@ -294,6 +296,8 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
int ret;
struct inode *inode = file_inode(file);
trace_nfs_fsync_enter(inode);
do {
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret != 0)
......@@ -310,6 +314,7 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
end = LLONG_MAX;
} while (ret == -EAGAIN);
trace_nfs_fsync_exit(inode, ret);
return ret;
}
......@@ -406,6 +411,7 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
struct page *page, void *fsdata)
{
unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
struct nfs_open_context *ctx = nfs_file_open_context(file);
int status;
dfprintk(PAGECACHE, "NFS: write_end(%s/%s(%ld), %u@%lld)\n",
......@@ -441,6 +447,13 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
if (status < 0)
return status;
NFS_I(mapping->host)->write_io += copied;
if (nfs_ctx_key_to_expire(ctx)) {
status = nfs_wb_all(mapping->host);
if (status < 0)
return status;
}
return copied;
}
......@@ -637,7 +650,8 @@ static int nfs_need_sync_write(struct file *filp, struct inode *inode)
if (IS_SYNC(inode) || (filp->f_flags & O_DSYNC))
return 1;
ctx = nfs_file_open_context(filp);
if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags))
if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags) ||
nfs_ctx_key_to_expire(ctx))
return 1;
return 0;
}
......@@ -651,6 +665,10 @@ ssize_t nfs_file_write(struct kiocb *iocb, const struct iovec *iov,
ssize_t result;
size_t count = iov_length(iov, nr_segs);
result = nfs_key_timeout_notify(iocb->ki_filp, inode);
if (result)
return result;
if (iocb->ki_filp->f_flags & O_DIRECT)
return nfs_file_direct_write(iocb, iov, nr_segs, pos, true);
......
......@@ -49,6 +49,7 @@
#include "internal.h"
#include "netns.h"
#include "nfs4trace.h"
#define NFS_UINT_MAXLEN 11
......@@ -63,6 +64,7 @@ struct idmap_legacy_upcalldata {
};
struct idmap {
struct rpc_pipe_dir_object idmap_pdo;
struct rpc_pipe *idmap_pipe;
struct idmap_legacy_upcalldata *idmap_upcall_data;
struct mutex idmap_mutex;
......@@ -310,7 +312,7 @@ static ssize_t nfs_idmap_get_key(const char *name, size_t namelen,
if (ret < 0)
goto out_up;
payload = rcu_dereference(rkey->payload.data);
payload = rcu_dereference(rkey->payload.rcudata);
if (IS_ERR_OR_NULL(payload)) {
ret = PTR_ERR(payload);
goto out_up;
......@@ -401,16 +403,23 @@ static struct key_type key_type_id_resolver_legacy = {
.request_key = nfs_idmap_legacy_upcall,
};
static void __nfs_idmap_unregister(struct rpc_pipe *pipe)
static void nfs_idmap_pipe_destroy(struct dentry *dir,
struct rpc_pipe_dir_object *pdo)
{
if (pipe->dentry)
struct idmap *idmap = pdo->pdo_data;
struct rpc_pipe *pipe = idmap->idmap_pipe;
if (pipe->dentry) {
rpc_unlink(pipe->dentry);
pipe->dentry = NULL;
}
}
static int __nfs_idmap_register(struct dentry *dir,
struct idmap *idmap,
struct rpc_pipe *pipe)
static int nfs_idmap_pipe_create(struct dentry *dir,
struct rpc_pipe_dir_object *pdo)
{
struct idmap *idmap = pdo->pdo_data;
struct rpc_pipe *pipe = idmap->idmap_pipe;
struct dentry *dentry;
dentry = rpc_mkpipe_dentry(dir, "idmap", idmap, pipe);
......@@ -420,36 +429,10 @@ static int __nfs_idmap_register(struct dentry *dir,
return 0;
}
static void nfs_idmap_unregister(struct nfs_client *clp,
struct rpc_pipe *pipe)
{
struct net *net = clp->cl_net;
struct super_block *pipefs_sb;
pipefs_sb = rpc_get_sb_net(net);
if (pipefs_sb) {
__nfs_idmap_unregister(pipe);
rpc_put_sb_net(net);
}
}
static int nfs_idmap_register(struct nfs_client *clp,
struct idmap *idmap,
struct rpc_pipe *pipe)
{
struct net *net = clp->cl_net;
struct super_block *pipefs_sb;
int err = 0;
pipefs_sb = rpc_get_sb_net(net);
if (pipefs_sb) {
if (clp->cl_rpcclient->cl_dentry)
err = __nfs_idmap_register(clp->cl_rpcclient->cl_dentry,
idmap, pipe);
rpc_put_sb_net(net);
}
return err;
}
static const struct rpc_pipe_dir_object_ops nfs_idmap_pipe_dir_object_ops = {
.create = nfs_idmap_pipe_create,
.destroy = nfs_idmap_pipe_destroy,
};
int
nfs_idmap_new(struct nfs_client *clp)
......@@ -462,23 +445,31 @@ nfs_idmap_new(struct nfs_client *clp)
if (idmap == NULL)
return -ENOMEM;
rpc_init_pipe_dir_object(&idmap->idmap_pdo,
&nfs_idmap_pipe_dir_object_ops,
idmap);
pipe = rpc_mkpipe_data(&idmap_upcall_ops, 0);
if (IS_ERR(pipe)) {
error = PTR_ERR(pipe);
kfree(idmap);
return error;
}
error = nfs_idmap_register(clp, idmap, pipe);
if (error) {
rpc_destroy_pipe_data(pipe);
kfree(idmap);
return error;
goto err;
}
idmap->idmap_pipe = pipe;
mutex_init(&idmap->idmap_mutex);
error = rpc_add_pipe_dir_object(clp->cl_net,
&clp->cl_rpcclient->cl_pipedir_objects,
&idmap->idmap_pdo);
if (error)