fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git] / fs / nfs / nfs4proc.c
index f8c0066..b3fd29b 100644 (file)
 
 #include "nfs4_fs.h"
 #include "delegation.h"
+#include "iostat.h"
 
 #define NFSDBG_FACILITY                NFSDBG_PROC
 
-#define NFS4_POLL_RETRY_MIN    (1*HZ)
+#define NFS4_POLL_RETRY_MIN    (HZ/10)
 #define NFS4_POLL_RETRY_MAX    (15*HZ)
 
 struct nfs4_opendata;
@@ -63,9 +64,7 @@ static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinf
 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *);
 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry);
 static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception);
-static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs4_client *clp);
-extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
-extern struct rpc_procinfo nfs4_procedures[];
+static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp);
 
 /* Prevent leaks of NFSv4 errors into userland */
 int nfs4_map_errors(int err)
@@ -120,10 +119,29 @@ const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE
                        0
 };
 
-static void nfs4_setup_readdir(u64 cookie, u32 *verifier, struct dentry *dentry,
+const u32 nfs4_fs_locations_bitmap[2] = {
+       FATTR4_WORD0_TYPE
+       | FATTR4_WORD0_CHANGE
+       | FATTR4_WORD0_SIZE
+       | FATTR4_WORD0_FSID
+       | FATTR4_WORD0_FILEID
+       | FATTR4_WORD0_FS_LOCATIONS,
+       FATTR4_WORD1_MODE
+       | FATTR4_WORD1_NUMLINKS
+       | FATTR4_WORD1_OWNER
+       | FATTR4_WORD1_OWNER_GROUP
+       | FATTR4_WORD1_RAWDEV
+       | FATTR4_WORD1_SPACE_USED
+       | FATTR4_WORD1_TIME_ACCESS
+       | FATTR4_WORD1_TIME_METADATA
+       | FATTR4_WORD1_TIME_MODIFY
+       | FATTR4_WORD1_MOUNTED_ON_FILEID
+};
+
+static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
                struct nfs4_readdir_arg *readdir)
 {
-       u32 *start, *p;
+       __be32 *start, *p;
 
        BUG_ON(readdir->count < 80);
        if (cookie > 2) {
@@ -144,7 +162,7 @@ static void nfs4_setup_readdir(u64 cookie, u32 *verifier, struct dentry *dentry,
         * when talking to the server, we always send cookie 0
         * instead of 1 or 2.
         */
-       start = p = (u32 *)kmap_atomic(*readdir->pages, KM_USER0);
+       start = p = kmap_atomic(*readdir->pages, KM_USER0);
        
        if (cookie == 0) {
                *p++ = xdr_one;                                  /* next */
@@ -177,22 +195,22 @@ static void nfs4_setup_readdir(u64 cookie, u32 *verifier, struct dentry *dentry,
 
 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
 {
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
        spin_lock(&clp->cl_lock);
        if (time_before(clp->cl_last_renewal,timestamp))
                clp->cl_last_renewal = timestamp;
        spin_unlock(&clp->cl_lock);
 }
 
-static void update_changeattr(struct inode *inode, struct nfs4_change_info *cinfo)
+static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
 {
-       struct nfs_inode *nfsi = NFS_I(inode);
+       struct nfs_inode *nfsi = NFS_I(dir);
 
-       spin_lock(&inode->i_lock);
-       nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
+       spin_lock(&dir->i_lock);
+       nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
        if (cinfo->before == nfsi->change_attr && cinfo->atomic)
                nfsi->change_attr = cinfo->after;
-       spin_unlock(&inode->i_lock);
+       spin_unlock(&dir->i_lock);
 }
 
 struct nfs4_opendata {
@@ -234,7 +252,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
        atomic_inc(&sp->so_count);
        p->o_arg.fh = NFS_FH(dir);
        p->o_arg.open_flags = flags,
-       p->o_arg.clientid = server->nfs4_state->cl_clientid;
+       p->o_arg.clientid = server->nfs_client->cl_clientid;
        p->o_arg.id = sp->so_id;
        p->o_arg.name = &dentry->d_name;
        p->o_arg.server = server;
@@ -335,7 +353,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
        if (!(data->f_attr.valid & NFS_ATTR_FATTR))
                goto out;
        inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
-       if (inode == NULL)
+       if (IS_ERR(inode))
                goto out;
        state = nfs4_get_open_state(inode, data->owner);
        if (state == NULL)
@@ -532,7 +550,7 @@ int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state)
                        case -NFS4ERR_STALE_STATEID:
                        case -NFS4ERR_EXPIRED:
                                /* Don't recall a delegation if it was lost */
-                               nfs4_schedule_state_recovery(server->nfs4_state);
+                               nfs4_schedule_state_recovery(server->nfs_client);
                                return err;
                }
                err = nfs4_handle_exception(server, err, &exception);
@@ -604,18 +622,21 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
        int status;
 
        atomic_inc(&data->count);
+       /*
+        * If rpc_run_task() ends up calling ->rpc_release(), we
+        * want to ensure that it takes the 'error' code path.
+        */
+       data->rpc_status = -ENOMEM;
        task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data);
-       if (IS_ERR(task)) {
-               nfs4_opendata_free(data);
+       if (IS_ERR(task))
                return PTR_ERR(task);
-       }
        status = nfs4_wait_for_completion_rpc_task(task);
        if (status != 0) {
                data->cancelled = 1;
                smp_wmb();
        } else
                status = data->rpc_status;
-       rpc_release_task(task);
+       rpc_put_task(task);
        return status;
 }
 
@@ -707,18 +728,21 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
        int status;
 
        atomic_inc(&data->count);
+       /*
+        * If rpc_run_task() ends up calling ->rpc_release(), we
+        * want to ensure that it takes the 'error' code path.
+        */
+       data->rpc_status = -ENOMEM;
        task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data);
-       if (IS_ERR(task)) {
-               nfs4_opendata_free(data);
+       if (IS_ERR(task))
                return PTR_ERR(task);
-       }
        status = nfs4_wait_for_completion_rpc_task(task);
        if (status != 0) {
                data->cancelled = 1;
                smp_wmb();
        } else
                status = data->rpc_status;
-       rpc_release_task(task);
+       rpc_put_task(task);
        if (status != 0)
                return status;
 
@@ -734,7 +758,7 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
        }
        nfs_confirm_seqid(&data->owner->so_seqid, 0);
        if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
-               return server->rpc_ops->getattr(server, &o_res->fh, o_res->f_attr);
+               return server->nfs_client->rpc_ops->getattr(server, &o_res->fh, o_res->f_attr);
        return 0;
 }
 
@@ -768,11 +792,18 @@ out:
 
 int nfs4_recover_expired_lease(struct nfs_server *server)
 {
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
+       int ret;
 
-       if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+       for (;;) {
+               ret = nfs4_wait_clnt_recover(server->client, clp);
+               if (ret != 0)
+                       return ret;
+               if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+                       break;
                nfs4_schedule_state_recovery(clp);
-       return nfs4_wait_clnt_recover(server->client, clp);
+       }
+       return 0;
 }
 
 /*
@@ -843,7 +874,7 @@ static int _nfs4_open_delegated(struct inode *inode, int flags, struct rpc_cred
 {
        struct nfs_delegation *delegation;
        struct nfs_server *server = NFS_SERVER(inode);
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
        struct nfs_inode *nfsi = NFS_I(inode);
        struct nfs4_state_owner *sp = NULL;
        struct nfs4_state *state = NULL;
@@ -908,7 +939,7 @@ out_put_state_owner:
 static struct nfs4_state *nfs4_open_delegated(struct inode *inode, int flags, struct rpc_cred *cred)
 {
        struct nfs4_exception exception = { };
-       struct nfs4_state *res;
+       struct nfs4_state *res = ERR_PTR(-EIO);
        int err;
 
        do {
@@ -929,7 +960,7 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
        struct nfs4_state_owner  *sp;
        struct nfs4_state     *state = NULL;
        struct nfs_server       *server = NFS_SERVER(dir);
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
        struct nfs4_opendata *opendata;
        int                     status;
 
@@ -946,7 +977,7 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
        status = -ENOMEM;
        opendata = nfs4_opendata_alloc(dentry, sp, flags, sattr);
        if (opendata == NULL)
-               goto err_put_state_owner;
+               goto err_release_rwsem;
 
        status = _nfs4_proc_open(opendata);
        if (status != 0)
@@ -965,11 +996,11 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, st
        return 0;
 err_opendata_free:
        nfs4_opendata_free(opendata);
+err_release_rwsem:
+       up_read(&clp->cl_sem);
 err_put_state_owner:
        nfs4_put_state_owner(sp);
 out_err:
-       /* Note: clp->cl_sem must be released before nfs4_put_open_state()! */
-       up_read(&clp->cl_sem);
        *res = NULL;
        return status;
 }
@@ -1017,12 +1048,12 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry,
        return res;
 }
 
-static int _nfs4_do_setattr(struct nfs_server *server, struct nfs_fattr *fattr,
-                struct nfs_fh *fhandle, struct iattr *sattr,
-                struct nfs4_state *state)
+static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr,
+                struct iattr *sattr, struct nfs4_state *state)
 {
+       struct nfs_server *server = NFS_SERVER(inode);
         struct nfs_setattrargs  arg = {
-                .fh             = fhandle,
+                .fh             = NFS_FH(inode),
                 .iap            = sattr,
                .server         = server,
                .bitmask = server->attr_bitmask,
@@ -1041,7 +1072,9 @@ static int _nfs4_do_setattr(struct nfs_server *server, struct nfs_fattr *fattr,
 
        nfs_fattr_init(fattr);
 
-       if (state != NULL) {
+       if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
+               /* Use that stateid */
+       } else if (state != NULL) {
                msg.rpc_cred = state->owner->so_cred;
                nfs4_copy_stateid(&arg.stateid, state, current->files);
        } else
@@ -1053,16 +1086,15 @@ static int _nfs4_do_setattr(struct nfs_server *server, struct nfs_fattr *fattr,
        return status;
 }
 
-static int nfs4_do_setattr(struct nfs_server *server, struct nfs_fattr *fattr,
-                struct nfs_fh *fhandle, struct iattr *sattr,
-                struct nfs4_state *state)
+static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr,
+                struct iattr *sattr, struct nfs4_state *state)
 {
+       struct nfs_server *server = NFS_SERVER(inode);
        struct nfs4_exception exception = { };
        int err;
        do {
                err = nfs4_handle_exception(server,
-                               _nfs4_do_setattr(server, fattr, fhandle, sattr,
-                                       state),
+                               _nfs4_do_setattr(inode, fattr, sattr, state),
                                &exception);
        } while (exception.retry);
        return err;
@@ -1108,7 +1140,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
                        break;
                case -NFS4ERR_STALE_STATEID:
                case -NFS4ERR_EXPIRED:
-                       nfs4_schedule_state_recovery(server->nfs4_state);
+                       nfs4_schedule_state_recovery(server->nfs_client);
                        break;
                default:
                        if (nfs4_async_handle_error(task, server) == -EAGAIN) {
@@ -1210,7 +1242,7 @@ out:
        return status;
 }
 
-static void nfs4_intent_set_file(struct nameidata *nd, struct dentry *dentry, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct dentry *dentry, struct nfs4_state *state)
 {
        struct file *filp;
 
@@ -1219,8 +1251,10 @@ static void nfs4_intent_set_file(struct nameidata *nd, struct dentry *dentry, st
                struct nfs_open_context *ctx;
                ctx = (struct nfs_open_context *)filp->private_data;
                ctx->state = state;
-       } else
-               nfs4_close_state(state, nd->intent.open.flags);
+               return 0;
+       }
+       nfs4_close_state(state, nd->intent.open.flags);
+       return PTR_ERR(filp);
 }
 
 struct dentry *
@@ -1241,7 +1275,7 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
                BUG_ON(nd->intent.open.flags & O_CREAT);
        }
 
-       cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
+       cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0);
        if (IS_ERR(cred))
                return (struct dentry *)cred;
        state = nfs4_do_open(dir, dentry, nd->intent.open.flags, &attr, cred);
@@ -1264,7 +1298,7 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
        struct rpc_cred *cred;
        struct nfs4_state *state;
 
-       cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
+       cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0);
        if (IS_ERR(cred))
                return PTR_ERR(cred);
        state = nfs4_open_delegated(dentry->d_inode, openflags, cred);
@@ -1280,11 +1314,9 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
                        case -EROFS:
                                lookup_instantiate_filp(nd, (struct dentry *)state, NULL);
                                return 1;
-                       case -ENOENT:
-                               if (dentry->d_inode == NULL)
-                                       return 1;
+                       default:
+                               goto out_drop;
                }
-               goto out_drop;
        }
        if (state->inode == dentry->d_inode) {
                nfs4_intent_set_file(nd, dentry, state);
@@ -1321,7 +1353,7 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
        return status;
 }
 
-static int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
+int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
 {
        struct nfs4_exception exception = { };
        int err;
@@ -1366,73 +1398,66 @@ static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
        return err;
 }
 
+/*
+ * get the file handle for the "/" directory on the server
+ */
 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
-               struct nfs_fsinfo *info)
+                             struct nfs_fsinfo *info)
 {
-       struct nfs_fattr *      fattr = info->fattr;
-       unsigned char *         p;
-       struct qstr             q;
-       struct nfs4_lookup_arg args = {
-               .dir_fh = fhandle,
-               .name = &q,
-               .bitmask = nfs4_fattr_bitmap,
-       };
-       struct nfs4_lookup_res res = {
-               .server = server,
-               .fattr = fattr,
-               .fh = fhandle,
-       };
-       struct rpc_message msg = {
-               .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
-               .rpc_argp = &args,
-               .rpc_resp = &res,
-       };
        int status;
 
-       /*
-        * Now we do a separate LOOKUP for each component of the mount path.
-        * The LOOKUPs are done separately so that we can conveniently
-        * catch an ERR_WRONGSEC if it occurs along the way...
-        */
        status = nfs4_lookup_root(server, fhandle, info);
-       if (status)
-               goto out;
-
-       p = server->mnt_path;
-       for (;;) {
-               struct nfs4_exception exception = { };
-
-               while (*p == '/')
-                       p++;
-               if (!*p)
-                       break;
-               q.name = p;
-               while (*p && (*p != '/'))
-                       p++;
-               q.len = p - q.name;
-
-               do {
-                       nfs_fattr_init(fattr);
-                       status = nfs4_handle_exception(server,
-                                       rpc_call_sync(server->client, &msg, 0),
-                                       &exception);
-               } while (exception.retry);
-               if (status == 0)
-                       continue;
-               if (status == -ENOENT) {
-                       printk(KERN_NOTICE "NFS: mount path %s does not exist!\n", server->mnt_path);
-                       printk(KERN_NOTICE "NFS: suggestion: try mounting '/' instead.\n");
-               }
-               break;
-       }
        if (status == 0)
                status = nfs4_server_capabilities(server, fhandle);
        if (status == 0)
                status = nfs4_do_fsinfo(server, fhandle, info);
-out:
        return nfs4_map_errors(status);
 }
 
+/*
+ * Get locations and (maybe) other attributes of a referral.
+ * Note that we'll actually follow the referral later when
+ * we detect fsid mismatch in inode revalidation
+ */
+static int nfs4_get_referral(struct inode *dir, struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
+{
+       int status = -ENOMEM;
+       struct page *page = NULL;
+       struct nfs4_fs_locations *locations = NULL;
+       struct dentry dentry = {};
+
+       page = alloc_page(GFP_KERNEL);
+       if (page == NULL)
+               goto out;
+       locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
+       if (locations == NULL)
+               goto out;
+
+       dentry.d_name.name = name->name;
+       dentry.d_name.len = name->len;
+       status = nfs4_proc_fs_locations(dir, &dentry, locations, page);
+       if (status != 0)
+               goto out;
+       /* Make sure server returned a different fsid for the referral */
+       if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
+               dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name);
+               status = -EIO;
+               goto out;
+       }
+
+       memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
+       fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
+       if (!fattr->mode)
+               fattr->mode = S_IFDIR;
+       memset(fhandle, 0, sizeof(struct nfs_fh));
+out:
+       if (page)
+               __free_page(page);
+       if (locations)
+               kfree(locations);
+       return status;
+}
+
 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
        struct nfs4_getattr_arg args = {
@@ -1494,7 +1519,7 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 
        nfs_fattr_init(fattr);
        
-       cred = rpcauth_lookupcred(NFS_SERVER(inode)->client->cl_auth, 0);
+       cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0);
        if (IS_ERR(cred))
                return PTR_ERR(cred);
 
@@ -1503,8 +1528,7 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
        if (ctx != NULL)
                state = ctx->state;
 
-       status = nfs4_do_setattr(NFS_SERVER(inode), fattr,
-                       NFS_FH(inode), sattr, state);
+       status = nfs4_do_setattr(inode, fattr, sattr, state);
        if (status == 0)
                nfs_setattr_update_inode(inode, sattr);
        if (ctx != NULL)
@@ -1513,6 +1537,52 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
        return status;
 }
 
+static int _nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
+               struct qstr *name, struct nfs_fh *fhandle,
+               struct nfs_fattr *fattr)
+{
+       int                    status;
+       struct nfs4_lookup_arg args = {
+               .bitmask = server->attr_bitmask,
+               .dir_fh = dirfh,
+               .name = name,
+       };
+       struct nfs4_lookup_res res = {
+               .server = server,
+               .fattr = fattr,
+               .fh = fhandle,
+       };
+       struct rpc_message msg = {
+               .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
+               .rpc_argp = &args,
+               .rpc_resp = &res,
+       };
+
+       nfs_fattr_init(fattr);
+
+       dprintk("NFS call  lookupfh %s\n", name->name);
+       status = rpc_call_sync(server->client, &msg, 0);
+       dprintk("NFS reply lookupfh: %d\n", status);
+       if (status == -NFS4ERR_MOVED)
+               status = -EREMOTE;
+       return status;
+}
+
+static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
+                             struct qstr *name, struct nfs_fh *fhandle,
+                             struct nfs_fattr *fattr)
+{
+       struct nfs4_exception exception = { };
+       int err;
+       do {
+               err = nfs4_handle_exception(server,
+                               _nfs4_proc_lookupfh(server, dirfh, name,
+                                                   fhandle, fattr),
+                               &exception);
+       } while (exception.retry);
+       return err;
+}
+
 static int _nfs4_proc_lookup(struct inode *dir, struct qstr *name,
                struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
@@ -1538,6 +1608,8 @@ static int _nfs4_proc_lookup(struct inode *dir, struct qstr *name,
        
        dprintk("NFS call  lookup %s\n", name->name);
        status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+       if (status == -NFS4ERR_MOVED)
+               status = nfs4_get_referral(dir, name, fattr, fhandle);
        dprintk("NFS reply lookup: %d\n", status);
        return status;
 }
@@ -1703,89 +1775,6 @@ static int nfs4_proc_read(struct nfs_read_data *rdata)
        return err;
 }
 
-static int _nfs4_proc_write(struct nfs_write_data *wdata)
-{
-       int rpcflags = wdata->flags;
-       struct inode *inode = wdata->inode;
-       struct nfs_fattr *fattr = wdata->res.fattr;
-       struct nfs_server *server = NFS_SERVER(inode);
-       struct rpc_message msg = {
-               .rpc_proc       = &nfs4_procedures[NFSPROC4_CLNT_WRITE],
-               .rpc_argp       = &wdata->args,
-               .rpc_resp       = &wdata->res,
-               .rpc_cred       = wdata->cred,
-       };
-       int status;
-
-       dprintk("NFS call  write %d @ %Ld\n", wdata->args.count,
-                       (long long) wdata->args.offset);
-
-       wdata->args.bitmask = server->attr_bitmask;
-       wdata->res.server = server;
-       wdata->timestamp = jiffies;
-       nfs_fattr_init(fattr);
-       status = rpc_call_sync(server->client, &msg, rpcflags);
-       dprintk("NFS reply write: %d\n", status);
-       if (status < 0)
-               return status;
-       renew_lease(server, wdata->timestamp);
-       nfs_post_op_update_inode(inode, fattr);
-       return wdata->res.count;
-}
-
-static int nfs4_proc_write(struct nfs_write_data *wdata)
-{
-       struct nfs4_exception exception = { };
-       int err;
-       do {
-               err = nfs4_handle_exception(NFS_SERVER(wdata->inode),
-                               _nfs4_proc_write(wdata),
-                               &exception);
-       } while (exception.retry);
-       return err;
-}
-
-static int _nfs4_proc_commit(struct nfs_write_data *cdata)
-{
-       struct inode *inode = cdata->inode;
-       struct nfs_fattr *fattr = cdata->res.fattr;
-       struct nfs_server *server = NFS_SERVER(inode);
-       struct rpc_message msg = {
-               .rpc_proc       = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
-               .rpc_argp       = &cdata->args,
-               .rpc_resp       = &cdata->res,
-               .rpc_cred       = cdata->cred,
-       };
-       int status;
-
-       dprintk("NFS call  commit %d @ %Ld\n", cdata->args.count,
-                       (long long) cdata->args.offset);
-
-       cdata->args.bitmask = server->attr_bitmask;
-       cdata->res.server = server;
-       cdata->timestamp = jiffies;
-       nfs_fattr_init(fattr);
-       status = rpc_call_sync(server->client, &msg, 0);
-       if (status >= 0)
-               renew_lease(server, cdata->timestamp);
-       dprintk("NFS reply commit: %d\n", status);
-       if (status >= 0)
-               nfs_post_op_update_inode(inode, fattr);
-       return status;
-}
-
-static int nfs4_proc_commit(struct nfs_write_data *cdata)
-{
-       struct nfs4_exception exception = { };
-       int err;
-       do {
-               err = nfs4_handle_exception(NFS_SERVER(cdata->inode),
-                               _nfs4_proc_commit(cdata),
-                               &exception);
-       } while (exception.retry);
-       return err;
-}
-
 /*
  * Got race?
  * We will need to arrange for the VFS layer to provide an atomic open.
@@ -1809,7 +1798,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
        struct rpc_cred *cred;
        int status = 0;
 
-       cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
+       cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0);
        if (IS_ERR(cred)) {
                status = PTR_ERR(cred);
                goto out;
@@ -1823,13 +1812,12 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
        d_instantiate(dentry, igrab(state->inode));
        if (flags & O_EXCL) {
                struct nfs_fattr fattr;
-               status = nfs4_do_setattr(NFS_SERVER(dir), &fattr,
-                                    NFS_FH(state->inode), sattr, state);
+               status = nfs4_do_setattr(state->inode, &fattr, sattr, state);
                if (status == 0)
                        nfs_setattr_update_inode(state->inode, sattr);
        }
        if (status == 0 && nd != NULL && (nd->flags & LOOKUP_OPEN))
-               nfs4_intent_set_file(nd, dentry, state);
+               status = nfs4_intent_set_file(nd, dentry, state);
        else
                nfs4_close_state(state, flags);
 out:
@@ -1889,7 +1877,7 @@ static int nfs4_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir,
        struct nfs_server *server = NFS_SERVER(dir->d_inode);
        struct unlink_desc *up;
 
-       up = (struct unlink_desc *) kmalloc(sizeof(*up), GFP_KERNEL);
+       up = kmalloc(sizeof(*up), GFP_KERNEL);
        if (!up)
                return -ENOMEM;
        
@@ -2000,7 +1988,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *
        if (!status) {
                update_changeattr(dir, &res.cinfo);
                nfs_post_op_update_inode(dir, res.dir_attr);
-               nfs_refresh_inode(inode, res.fattr);
+               nfs_post_op_update_inode(inode, res.fattr);
        }
 
        return status;
@@ -2018,24 +2006,24 @@ static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *n
        return err;
 }
 
-static int _nfs4_proc_symlink(struct inode *dir, struct qstr *name,
-               struct qstr *path, struct iattr *sattr, struct nfs_fh *fhandle,
-               struct nfs_fattr *fattr)
+static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
+               struct page *page, unsigned int len, struct iattr *sattr)
 {
        struct nfs_server *server = NFS_SERVER(dir);
-       struct nfs_fattr dir_fattr;
+       struct nfs_fh fhandle;
+       struct nfs_fattr fattr, dir_fattr;
        struct nfs4_create_arg arg = {
                .dir_fh = NFS_FH(dir),
                .server = server,
-               .name = name,
+               .name = &dentry->d_name,
                .attrs = sattr,
                .ftype = NF4LNK,
                .bitmask = server->attr_bitmask,
        };
        struct nfs4_create_res res = {
                .server = server,
-               .fh = fhandle,
-               .fattr = fattr,
+               .fh = &fhandle,
+               .fattr = &fattr,
                .dir_fattr = &dir_fattr,
        };
        struct rpc_message msg = {
@@ -2045,29 +2033,32 @@ static int _nfs4_proc_symlink(struct inode *dir, struct qstr *name,
        };
        int                     status;
 
-       if (path->len > NFS4_MAXPATHLEN)
+       if (len > NFS4_MAXPATHLEN)
                return -ENAMETOOLONG;
-       arg.u.symlink = path;
-       nfs_fattr_init(fattr);
+
+       arg.u.symlink.pages = &page;
+       arg.u.symlink.len = len;
+       nfs_fattr_init(&fattr);
        nfs_fattr_init(&dir_fattr);
        
        status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
-       if (!status)
+       if (!status) {
                update_changeattr(dir, &res.dir_cinfo);
-       nfs_post_op_update_inode(dir, res.dir_fattr);
+               nfs_post_op_update_inode(dir, res.dir_fattr);
+               status = nfs_instantiate(dentry, &fhandle, &fattr);
+       }
        return status;
 }
 
-static int nfs4_proc_symlink(struct inode *dir, struct qstr *name,
-               struct qstr *path, struct iattr *sattr, struct nfs_fh *fhandle,
-               struct nfs_fattr *fattr)
+static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
+               struct page *page, unsigned int len, struct iattr *sattr)
 {
        struct nfs4_exception exception = { };
        int err;
        do {
                err = nfs4_handle_exception(NFS_SERVER(dir),
-                               _nfs4_proc_symlink(dir, name, path, sattr,
-                                       fhandle, fattr),
+                               _nfs4_proc_symlink(dir, dentry, page,
+                                                       len, sattr),
                                &exception);
        } while (exception.retry);
        return err;
@@ -2149,13 +2140,11 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
                        dentry->d_parent->d_name.name,
                        dentry->d_name.name,
                        (unsigned long long)cookie);
-       lock_kernel();
        nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
        res.pgbase = args.pgbase;
        status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
        if (status == 0)
                memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
-       unlock_kernel();
        dprintk("%s: returns %d\n", __FUNCTION__, status);
        return status;
 }
@@ -2344,75 +2333,50 @@ static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
        return err;
 }
 
-static void nfs4_read_done(struct rpc_task *task, void *calldata)
+static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
 {
-       struct nfs_read_data *data = calldata;
-       struct inode *inode = data->inode;
+       struct nfs_server *server = NFS_SERVER(data->inode);
 
-       if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) {
+       if (nfs4_async_handle_error(task, server) == -EAGAIN) {
                rpc_restart_call(task);
-               return;
+               return -EAGAIN;
        }
        if (task->tk_status > 0)
-               renew_lease(NFS_SERVER(inode), data->timestamp);
-       /* Call back common NFS readpage processing */
-       nfs_readpage_result(task, calldata);
+               renew_lease(server, data->timestamp);
+       return 0;
 }
 
-static const struct rpc_call_ops nfs4_read_ops = {
-       .rpc_call_done = nfs4_read_done,
-       .rpc_release = nfs_readdata_release,
-};
-
-static void
-nfs4_proc_read_setup(struct nfs_read_data *data)
+static void nfs4_proc_read_setup(struct nfs_read_data *data)
 {
-       struct rpc_task *task = &data->task;
        struct rpc_message msg = {
                .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ],
                .rpc_argp = &data->args,
                .rpc_resp = &data->res,
                .rpc_cred = data->cred,
        };
-       struct inode *inode = data->inode;
-       int flags;
 
        data->timestamp   = jiffies;
 
-       /* N.B. Do we need to test? Never called for swapfile inode */
-       flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
-
-       /* Finalize the task. */
-       rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs4_read_ops, data);
-       rpc_call_setup(task, &msg, 0);
+       rpc_call_setup(&data->task, &msg, 0);
 }
 
-static void nfs4_write_done(struct rpc_task *task, void *calldata)
+static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
 {
-       struct nfs_write_data *data = calldata;
        struct inode *inode = data->inode;
        
        if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) {
                rpc_restart_call(task);
-               return;
+               return -EAGAIN;
        }
        if (task->tk_status >= 0) {
                renew_lease(NFS_SERVER(inode), data->timestamp);
                nfs_post_op_update_inode(inode, data->res.fattr);
        }
-       /* Call back common NFS writeback processing */
-       nfs_writeback_done(task, calldata);
+       return 0;
 }
 
-static const struct rpc_call_ops nfs4_write_ops = {
-       .rpc_call_done = nfs4_write_done,
-       .rpc_release = nfs_writedata_release,
-};
-
-static void
-nfs4_proc_write_setup(struct nfs_write_data *data, int how)
+static void nfs4_proc_write_setup(struct nfs_write_data *data, int how)
 {
-       struct rpc_task *task = &data->task;
        struct rpc_message msg = {
                .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE],
                .rpc_argp = &data->args,
@@ -2422,7 +2386,6 @@ nfs4_proc_write_setup(struct nfs_write_data *data, int how)
        struct inode *inode = data->inode;
        struct nfs_server *server = NFS_SERVER(inode);
        int stable;
-       int flags;
        
        if (how & FLUSH_STABLE) {
                if (!NFS_I(inode)->ncommit)
@@ -2437,57 +2400,37 @@ nfs4_proc_write_setup(struct nfs_write_data *data, int how)
 
        data->timestamp   = jiffies;
 
-       /* Set the initial flags for the task.  */
-       flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
-
        /* Finalize the task. */
-       rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs4_write_ops, data);
-       rpc_call_setup(task, &msg, 0);
+       rpc_call_setup(&data->task, &msg, 0);
 }
 
-static void nfs4_commit_done(struct rpc_task *task, void *calldata)
+static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
 {
-       struct nfs_write_data *data = calldata;
        struct inode *inode = data->inode;
        
        if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) {
                rpc_restart_call(task);
-               return;
+               return -EAGAIN;
        }
        if (task->tk_status >= 0)
                nfs_post_op_update_inode(inode, data->res.fattr);
-       /* Call back common NFS writeback processing */
-       nfs_commit_done(task, calldata);
+       return 0;
 }
 
-static const struct rpc_call_ops nfs4_commit_ops = {
-       .rpc_call_done = nfs4_commit_done,
-       .rpc_release = nfs_commit_release,
-};
-
-static void
-nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
+static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
 {
-       struct rpc_task *task = &data->task;
        struct rpc_message msg = {
                .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
                .rpc_argp = &data->args,
                .rpc_resp = &data->res,
                .rpc_cred = data->cred,
        };      
-       struct inode *inode = data->inode;
-       struct nfs_server *server = NFS_SERVER(inode);
-       int flags;
+       struct nfs_server *server = NFS_SERVER(data->inode);
        
        data->args.bitmask = server->attr_bitmask;
        data->res.server = server;
 
-       /* Set the initial flags for the task.  */
-       flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
-
-       /* Finalize the task. */
-       rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs4_commit_ops, data);
-       rpc_call_setup(task, &msg, 0);  
+       rpc_call_setup(&data->task, &msg, 0);
 }
 
 /*
@@ -2496,7 +2439,7 @@ nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
  */
 static void nfs4_renew_done(struct rpc_task *task, void *data)
 {
-       struct nfs4_client *clp = (struct nfs4_client *)task->tk_msg.rpc_argp;
+       struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp;
        unsigned long timestamp = (unsigned long)data;
 
        if (task->tk_status < 0) {
@@ -2518,7 +2461,7 @@ static const struct rpc_call_ops nfs4_renew_ops = {
        .rpc_call_done = nfs4_renew_done,
 };
 
-int nfs4_proc_async_renew(struct nfs4_client *clp, struct rpc_cred *cred)
+int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
 {
        struct rpc_message msg = {
                .rpc_proc       = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
@@ -2530,7 +2473,7 @@ int nfs4_proc_async_renew(struct nfs4_client *clp, struct rpc_cred *cred)
                        &nfs4_renew_ops, (void *)jiffies);
 }
 
-int nfs4_proc_renew(struct nfs4_client *clp, struct rpc_cred *cred)
+int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
 {
        struct rpc_message msg = {
                .rpc_proc       = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
@@ -2643,7 +2586,7 @@ out:
        nfs4_set_cached_acl(inode, acl);
 }
 
-static inline ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
+static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
 {
        struct page *pages[NFS4ACL_MAXPAGES];
        struct nfs_getaclargs args = {
@@ -2696,6 +2639,19 @@ out_free:
        return ret;
 }
 
+static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
+{
+       struct nfs4_exception exception = { };
+       ssize_t ret;
+       do {
+               ret = __nfs4_get_acl_uncached(inode, buf, buflen);
+               if (ret >= 0)
+                       break;
+               ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
+       } while (exception.retry);
+       return ret;
+}
+
 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
 {
        struct nfs_server *server = NFS_SERVER(inode);
@@ -2712,7 +2668,7 @@ static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
        return nfs4_get_acl_uncached(inode, buf, buflen);
 }
 
-static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
+static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
 {
        struct nfs_server *server = NFS_SERVER(inode);
        struct page *pages[NFS4ACL_MAXPAGES];
@@ -2732,16 +2688,28 @@ static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen
                return -EOPNOTSUPP;
        nfs_inode_return_delegation(inode);
        buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
-       ret = rpc_call_sync(NFS_SERVER(inode)->client, &msg, 0);
+       ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
        if (ret == 0)
                nfs4_write_cached_acl(inode, buf, buflen);
        return ret;
 }
 
+static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
+{
+       struct nfs4_exception exception = { };
+       int err;
+       do {
+               err = nfs4_handle_exception(NFS_SERVER(inode),
+                               __nfs4_proc_set_acl(inode, buf, buflen),
+                               &exception);
+       } while (exception.retry);
+       return err;
+}
+
 static int
 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server)
 {
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
 
        if (!clp || task->tk_status >= 0)
                return 0;
@@ -2755,8 +2723,10 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server)
                                rpc_wake_up_task(task);
                        task->tk_status = 0;
                        return -EAGAIN;
-               case -NFS4ERR_GRACE:
                case -NFS4ERR_DELAY:
+                       nfs_inc_server_stats((struct nfs_server *) server,
+                                               NFSIOS_DELAY);
+               case -NFS4ERR_GRACE:
                        rpc_delay(task, NFS4_POLL_RETRY_MAX);
                        task->tk_status = 0;
                        return -EAGAIN;
@@ -2776,7 +2746,7 @@ static int nfs4_wait_bit_interruptible(void *word)
        return 0;
 }
 
-static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs4_client *clp)
+static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp)
 {
        sigset_t oldset;
        int res;
@@ -2819,7 +2789,7 @@ static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
  */
 int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
 {
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
        int ret = errorcode;
 
        exception->retry = 0;
@@ -2834,6 +2804,7 @@ int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct
                        if (ret == 0)
                                exception->retry = 1;
                        break;
+               case -NFS4ERR_FILE_OPEN:
                case -NFS4ERR_GRACE:
                case -NFS4ERR_DELAY:
                        ret = nfs4_delay(server->client, &exception->timeout);
@@ -2846,7 +2817,7 @@ int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct
        return nfs4_map_errors(ret);
 }
 
-int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)
+int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)
 {
        nfs4_verifier sc_verifier;
        struct nfs4_setclientid setclientid = {
@@ -2859,18 +2830,18 @@ int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short p
                .rpc_resp = clp,
                .rpc_cred = cred,
        };
-       u32 *p;
+       __be32 *p;
        int loop = 0;
        int status;
 
-       p = (u32*)sc_verifier.data;
+       p = (__be32*)sc_verifier.data;
        *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
        *p = htonl((u32)clp->cl_boot_time.tv_nsec);
 
        for(;;) {
                setclientid.sc_name_len = scnprintf(setclientid.sc_name,
                                sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u",
-                               clp->cl_ipaddr, NIPQUAD(clp->cl_addr.s_addr),
+                               clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr),
                                cred->cr_ops->cr_name,
                                clp->cl_id_uniquifier);
                setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
@@ -2893,8 +2864,7 @@ int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short p
        return status;
 }
 
-int
-nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
+static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
 {
        struct nfs_fsinfo fsinfo;
        struct rpc_message msg = {
@@ -2918,6 +2888,24 @@ nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
        return status;
 }
 
+int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
+{
+       long timeout;
+       int err;
+       do {
+               err = _nfs4_proc_setclientid_confirm(clp, cred);
+               switch (err) {
+                       case 0:
+                               return err;
+                       case -NFS4ERR_RESOURCE:
+                               /* The IBM lawyers misread another document! */
+                       case -NFS4ERR_DELAY:
+                               err = nfs4_delay(clp->cl_rpcclient, &timeout);
+               }
+       } while (err == 0);
+       return err;
+}
+
 struct nfs4_delegreturndata {
        struct nfs4_delegreturnargs args;
        struct nfs4_delegreturnres res;
@@ -2958,7 +2946,7 @@ static void nfs4_delegreturn_release(void *calldata)
        kfree(calldata);
 }
 
-const static struct rpc_call_ops nfs4_delegreturn_ops = {
+static const struct rpc_call_ops nfs4_delegreturn_ops = {
        .rpc_call_prepare = nfs4_delegreturn_prepare,
        .rpc_call_done = nfs4_delegreturn_done,
        .rpc_release = nfs4_delegreturn_release,
@@ -2986,17 +2974,15 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
        data->rpc_status = 0;
 
        task = rpc_run_task(NFS_CLIENT(inode), RPC_TASK_ASYNC, &nfs4_delegreturn_ops, data);
-       if (IS_ERR(task)) {
-               nfs4_delegreturn_release(data);
+       if (IS_ERR(task))
                return PTR_ERR(task);
-       }
        status = nfs4_wait_for_completion_rpc_task(task);
        if (status == 0) {
                status = data->rpc_status;
                if (status == 0)
                        nfs_post_op_update_inode(inode, &data->fattr);
        }
-       rpc_release_task(task);
+       rpc_put_task(task);
        return status;
 }
 
@@ -3010,7 +2996,7 @@ int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4
                switch (err) {
                        case -NFS4ERR_STALE_STATEID:
                        case -NFS4ERR_EXPIRED:
-                               nfs4_schedule_state_recovery(server->nfs4_state);
+                               nfs4_schedule_state_recovery(server->nfs_client);
                        case 0:
                                return 0;
                }
@@ -3039,7 +3025,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock
 {
        struct inode *inode = state->inode;
        struct nfs_server *server = NFS_SERVER(inode);
-       struct nfs4_client *clp = server->nfs4_state;
+       struct nfs_client *clp = server->nfs_client;
        struct nfs_lockt_args arg = {
                .fh = NFS_FH(inode),
                .fl = request,
@@ -3102,9 +3088,6 @@ static int do_vfs_lock(struct file *file, struct file_lock *fl)
                default:
                        BUG();
        }
-       if (res < 0)
-               printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n",
-                               __FUNCTION__);
        return res;
 }
 
@@ -3167,7 +3150,7 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
                        break;
                case -NFS4ERR_STALE_STATEID:
                case -NFS4ERR_EXPIRED:
-                       nfs4_schedule_state_recovery(calldata->server->nfs4_state);
+                       nfs4_schedule_state_recovery(calldata->server->nfs_client);
                        break;
                default:
                        if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) {
@@ -3209,7 +3192,6 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
                struct nfs_seqid *seqid)
 {
        struct nfs4_unlockdata *data;
-       struct rpc_task *task;
 
        data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
        if (data == NULL) {
@@ -3217,12 +3199,7 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
                return ERR_PTR(-ENOMEM);
        }
 
-       /* Unlock _before_ we do the RPC call */
-       do_vfs_lock(fl->fl_file, fl);
-       task = rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
-       if (IS_ERR(task))
-               nfs4_locku_release_calldata(data);
-       return task;
+       return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
 }
 
 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
@@ -3232,30 +3209,28 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
        struct rpc_task *task;
        int status = 0;
 
-       /* Is this a delegated lock? */
-       if (test_bit(NFS_DELEGATED_STATE, &state->flags))
-               goto out_unlock;
-       /* Is this open_owner holding any locks on the server? */
-       if (test_bit(LK_STATE_IN_USE, &state->flags) == 0)
-               goto out_unlock;
-
        status = nfs4_set_lock_state(state, request);
+       /* Unlock _before_ we do the RPC call */
+       request->fl_flags |= FL_EXISTS;
+       if (do_vfs_lock(request->fl_file, request) == -ENOENT)
+               goto out;
        if (status != 0)
-               goto out_unlock;
+               goto out;
+       /* Is this a delegated lock? */
+       if (test_bit(NFS_DELEGATED_STATE, &state->flags))
+               goto out;
        lsp = request->fl_u.nfs4_fl.owner;
-       status = -ENOMEM;
        seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+       status = -ENOMEM;
        if (seqid == NULL)
-               goto out_unlock;
+               goto out;
        task = nfs4_do_unlck(request, request->fl_file->private_data, lsp, seqid);
        status = PTR_ERR(task);
        if (IS_ERR(task))
-               goto out_unlock;
+               goto out;
        status = nfs4_wait_for_completion_rpc_task(task);
-       rpc_release_task(task);
-       return status;
-out_unlock:
-       do_vfs_lock(request->fl_file, request);
+       rpc_put_task(task);
+out:
        return status;
 }
 
@@ -3287,7 +3262,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
        if (p->arg.lock_seqid == NULL)
                goto out_free;
        p->arg.lock_stateid = &lsp->ls_stateid;
-       p->arg.lock_owner.clientid = server->nfs4_state->cl_clientid;
+       p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
        p->arg.lock_owner.id = lsp->ls_id;
        p->lsp = lsp;
        atomic_inc(&lsp->ls_count);
@@ -3370,7 +3345,7 @@ static void nfs4_lock_release(void *calldata)
                task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
                                data->arg.lock_seqid);
                if (!IS_ERR(task))
-                       rpc_release_task(task);
+                       rpc_put_task(task);
                dprintk("%s: cancelling lock!\n", __FUNCTION__);
        } else
                nfs_free_seqid(data->arg.lock_seqid);
@@ -3403,10 +3378,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
                data->arg.reclaim = 1;
        task = rpc_run_task(NFS_CLIENT(state->inode), RPC_TASK_ASYNC,
                        &nfs4_lock_ops, data);
-       if (IS_ERR(task)) {
-               nfs4_lock_release(data);
+       if (IS_ERR(task))
                return PTR_ERR(task);
-       }
        ret = nfs4_wait_for_completion_rpc_task(task);
        if (ret == 0) {
                ret = data->rpc_status;
@@ -3414,7 +3387,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
                        ret = -EAGAIN;
        } else
                data->cancelled = 1;
-       rpc_release_task(task);
+       rpc_put_task(task);
        dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret);
        return ret;
 }
@@ -3425,10 +3398,10 @@ static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request
        struct nfs4_exception exception = { };
        int err;
 
-       /* Cache the lock if possible... */
-       if (test_bit(NFS_DELEGATED_STATE, &state->flags))
-               return 0;
        do {
+               /* Cache the lock if possible... */
+               if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
+                       return 0;
                err = _nfs4_do_setlk(state, F_SETLK, request, 1);
                if (err != -NFS4ERR_DELAY)
                        break;
@@ -3447,6 +3420,8 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request
        if (err != 0)
                return err;
        do {
+               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;
@@ -3457,30 +3432,43 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request
 
 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
 {
-       struct nfs4_client *clp = state->owner->so_client;
+       struct nfs_client *clp = state->owner->so_client;
+       unsigned char fl_flags = request->fl_flags;
        int status;
 
        /* Is this a delegated open? */
-       if (NFS_I(state->inode)->delegation_state != 0) {
-               /* Yes: cache locks! */
-               status = do_vfs_lock(request->fl_file, request);
-               /* ...but avoid races with delegation recall... */
-               if (status < 0 || test_bit(NFS_DELEGATED_STATE, &state->flags))
-                       return status;
-       }
-       down_read(&clp->cl_sem);
        status = nfs4_set_lock_state(state, request);
        if (status != 0)
                goto out;
+       request->fl_flags |= FL_ACCESS;
+       status = do_vfs_lock(request->fl_file, request);
+       if (status < 0)
+               goto out;
+       down_read(&clp->cl_sem);
+       if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
+               struct nfs_inode *nfsi = NFS_I(state->inode);
+               /* Yes: cache locks! */
+               down_read(&nfsi->rwsem);
+               /* ...but avoid races with delegation recall... */
+               if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
+                       request->fl_flags = fl_flags & ~FL_SLEEP;
+                       status = do_vfs_lock(request->fl_file, request);
+                       up_read(&nfsi->rwsem);
+                       goto out_unlock;
+               }
+               up_read(&nfsi->rwsem);
+       }
        status = _nfs4_do_setlk(state, cmd, request, 0);
        if (status != 0)
-               goto out;
+               goto out_unlock;
        /* Note: we always want to sleep here! */
-       request->fl_flags |= FL_SLEEP;
+       request->fl_flags = fl_flags | FL_SLEEP;
        if (do_vfs_lock(request->fl_file, request) < 0)
                printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__);
-out:
+out_unlock:
        up_read(&clp->cl_sem);
+out:
+       request->fl_flags = fl_flags;
        return status;
 }
 
@@ -3588,6 +3576,8 @@ ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
 {
        size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
 
+       if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
+               return 0;
        if (buf && buflen < len)
                return -ERANGE;
        if (buf)
@@ -3595,6 +3585,36 @@ ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
        return len;
 }
 
+int nfs4_proc_fs_locations(struct inode *dir, struct dentry *dentry,
+               struct nfs4_fs_locations *fs_locations, struct page *page)
+{
+       struct nfs_server *server = NFS_SERVER(dir);
+       u32 bitmask[2] = {
+               [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
+               [1] = FATTR4_WORD1_MOUNTED_ON_FILEID,
+       };
+       struct nfs4_fs_locations_arg args = {
+               .dir_fh = NFS_FH(dir),
+               .name = &dentry->d_name,
+               .page = page,
+               .bitmask = bitmask,
+       };
+       struct rpc_message msg = {
+               .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
+               .rpc_argp = &args,
+               .rpc_resp = fs_locations,
+       };
+       int status;
+
+       dprintk("%s: start\n", __FUNCTION__);
+       fs_locations->fattr.valid = 0;
+       fs_locations->server = server;
+       fs_locations->nlocations = 0;
+       status = rpc_call_sync(server->client, &msg, 0);
+       dprintk("%s: returned status = %d\n", __FUNCTION__, status);
+       return status;
+}
+
 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = {
        .recover_open   = nfs4_open_reclaim,
        .recover_lock   = nfs4_lock_reclaim,
@@ -3614,7 +3634,7 @@ static struct inode_operations nfs4_file_inode_operations = {
        .listxattr      = nfs4_listxattr,
 };
 
-struct nfs_rpc_ops     nfs_v4_clientops = {
+const struct nfs_rpc_ops nfs_v4_clientops = {
        .version        = 4,                    /* protocol version */
        .dentry_ops     = &nfs4_dentry_operations,
        .dir_inode_ops  = &nfs4_dir_inode_operations,
@@ -3622,12 +3642,11 @@ struct nfs_rpc_ops      nfs_v4_clientops = {
        .getroot        = nfs4_proc_get_root,
        .getattr        = nfs4_proc_getattr,
        .setattr        = nfs4_proc_setattr,
+       .lookupfh       = nfs4_proc_lookupfh,
        .lookup         = nfs4_proc_lookup,
        .access         = nfs4_proc_access,
        .readlink       = nfs4_proc_readlink,
        .read           = nfs4_proc_read,
-       .write          = nfs4_proc_write,
-       .commit         = nfs4_proc_commit,
        .create         = nfs4_proc_create,
        .remove         = nfs4_proc_remove,
        .unlink_setup   = nfs4_proc_unlink_setup,
@@ -3642,10 +3661,14 @@ struct nfs_rpc_ops      nfs_v4_clientops = {
        .statfs         = nfs4_proc_statfs,
        .fsinfo         = nfs4_proc_fsinfo,
        .pathconf       = nfs4_proc_pathconf,
+       .set_capabilities = nfs4_server_capabilities,
        .decode_dirent  = nfs4_decode_dirent,
        .read_setup     = nfs4_proc_read_setup,
+       .read_done      = nfs4_read_done,
        .write_setup    = nfs4_proc_write_setup,
+       .write_done     = nfs4_write_done,
        .commit_setup   = nfs4_proc_commit_setup,
+       .commit_done    = nfs4_commit_done,
        .file_open      = nfs_open,
        .file_release   = nfs_release,
        .lock           = nfs4_proc_lock,