Merge tag 'nfs-for-4.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Another set of mainly bugfixes and a couple of cleanups.  No new
  functionality in this round.

  Highlights include:

  Stable patches:
   - Fix a regression in /proc/self/mountstats
   - Fix the pNFS flexfiles O_DIRECT support
   - Fix high load average due to callback thread sleeping

  Bugfixes:
   - Various patches to fix the pNFS layoutcommit support
   - Do not cache pNFS deviceids unless server notifications are enabled
   - Fix a SUNRPC transport reconnection regression
   - make debugfs file creation failure non-fatal in SUNRPC
   - Another fix for circular directory warnings on NFSv4 "junctioned"
     mountpoints
   - Fix locking around NFSv4.2 fallocate() support
   - Truncating NFSv4 file opens should also sync O_DIRECT writes
   - Prevent infinite loop in rpcrdma_ep_create()

  Features:
   - Various improvements to the RDMA transport code's handling of
     memory registration
   - Various code cleanups"

* tag 'nfs-for-4.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (55 commits)
  fs/nfs: fix new compiler warning about boolean in switch
  nfs: Remove unneeded casts in nfs
  NFS: Don't attempt to decode missing directory entries
  Revert "nfs: replace nfs_add_stats with nfs_inc_stats when add one"
  NFS: Rename idmap.c to nfs4idmap.c
  NFS: Move nfs_idmap.h into fs/nfs/
  NFS: Remove CONFIG_NFS_V4 checks from nfs_idmap.h
  NFS: Add a stub for GETDEVICELIST
  nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes
  nfs: fix DIO good bytes calculation
  nfs: Fetch MOUNTED_ON_FILEID when updating an inode
  sunrpc: make debugfs file creation failure non-fatal
  nfs: fix high load average due to callback thread sleeping
  NFS: Reduce time spent holding the i_mutex during fallocate()
  NFS: Don't zap caches on fallocate()
  xprtrdma: Make rpcrdma_{un}map_one() into inline functions
  xprtrdma: Handle non-SEND completions via a callout
  xprtrdma: Add "open" memreg op
  xprtrdma: Add "destroy MRs" memreg op
  xprtrdma: Add "reset MRs" memreg op
  ...

6 files changed, 15 insertions, 86 deletions

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 410abd172feb..b95f914ce083 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -511,6 +511,7 @@ extern int  nfs_updatepage(struct file *, struct page *, unsigned int, unsigned
  * Try to write back everything synchronously (but check the
  * return value!)
  */
+extern int nfs_sync_inode(struct inode *inode);
 extern int nfs_wb_all(struct inode *inode);
 extern int nfs_wb_page(struct inode *inode, struct page* page);
 extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
diff --git a/include/linux/nfs_idmap.h b/include/linux/nfs_idmap.h
deleted file mode 100644
index 333844e38f66..000000000000
--- a/include/linux/nfs_idmap.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * include/linux/nfs_idmap.h
- *
- *  UID and GID to name mapping for clients.
- *
- *  Copyright (c) 2002 The Regents of the University of Michigan.
- *  All rights reserved.
- *
- *  Marius Aamodt Eriksen <marius@umich.edu>
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *  1. Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. Neither the name of the University nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef NFS_IDMAP_H
-#define NFS_IDMAP_H
-
-#include <linux/uidgid.h>
-#include <uapi/linux/nfs_idmap.h>
-
-
-/* Forward declaration to make this header independent of others */
-struct nfs_client;
-struct nfs_server;
-struct nfs_fattr;
-struct nfs4_string;
-
-#if IS_ENABLED(CONFIG_NFS_V4)
-int nfs_idmap_init(void);
-void nfs_idmap_quit(void);
-#else
-static inline int nfs_idmap_init(void)
-{
-        return 0;
-}
-
-static inline void nfs_idmap_quit(void)
-{}
-#endif
-
-int nfs_idmap_new(struct nfs_client *);
-void nfs_idmap_delete(struct nfs_client *);
-
-void nfs_fattr_init_names(struct nfs_fattr *fattr,
-                struct nfs4_string *owner_name,
-                struct nfs4_string *group_name);
-void nfs_fattr_free_names(struct nfs_fattr *);
-void nfs_fattr_map_and_free_names(struct nfs_server *, struct nfs_fattr *);
-
-int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, kuid_t *);
-int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, kgid_t *);
-int nfs_map_uid_to_name(const struct nfs_server *, kuid_t, char *, size_t);
-int nfs_map_gid_to_group(const struct nfs_server *, kgid_t, char *, size_t);
-
-int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res);
-
-extern unsigned int nfs_idmap_cache_timeout;
-#endif /* NFS_IDMAP_H */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 4cb3eaa89cf7..93ab6071bbe9 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -255,11 +255,13 @@ struct nfs4_layoutget {
 struct nfs4_getdeviceinfo_args {
         struct nfs4_sequence_args seq_args;
         struct pnfs_device *pdev;
+        __u32 notify_types;
 };
 
 struct nfs4_getdeviceinfo_res {
         struct nfs4_sequence_res seq_res;
         struct pnfs_device *pdev;
+        __u32 notification;
 };
 
 struct nfs4_layoutcommit_args {
@@ -1271,11 +1273,15 @@ struct nfs42_falloc_args {
         nfs4_stateid                     falloc_stateid;
         u64                              falloc_offset;
         u64                              falloc_length;
+        const u32                       *falloc_bitmask;
 };
 
 struct nfs42_falloc_res {
         struct nfs4_sequence_res        seq_res;
         unsigned int                    status;
+
+        struct nfs_fattr                *falloc_fattr;
+        const struct nfs_server         *falloc_server;
 };
 
 struct nfs42_seek_args {
diff --git a/include/linux/sunrpc/msg_prot.h b/include/linux/sunrpc/msg_prot.h
index aadc6a04e1ac..807371357160 100644
--- a/include/linux/sunrpc/msg_prot.h
+++ b/include/linux/sunrpc/msg_prot.h
@@ -142,12 +142,18 @@ typedef __be32	rpc_fraghdr;
         (RPC_REPHDRSIZE + (2 + RPC_MAX_AUTH_SIZE/4))
 
 /*
- * RFC1833/RFC3530 rpcbind (v3+) well-known netid's.
+ * Well-known netids. See:
+ *
+ *   http://www.iana.org/assignments/rpc-netids/rpc-netids.xhtml
  */
 #define RPCBIND_NETID_UDP       "udp"
 #define RPCBIND_NETID_TCP       "tcp"
+#define RPCBIND_NETID_RDMA      "rdma"
+#define RPCBIND_NETID_SCTP      "sctp"
 #define RPCBIND_NETID_UDP6      "udp6"
 #define RPCBIND_NETID_TCP6      "tcp6"
+#define RPCBIND_NETID_RDMA6     "rdma6"
+#define RPCBIND_NETID_SCTP6     "sctp6"
 #define RPCBIND_NETID_LOCAL     "local"
 
 /*
diff --git a/include/linux/sunrpc/xprtrdma.h b/include/linux/sunrpc/xprtrdma.h
index 64a0a0a97b23..c984c85981ea 100644
--- a/include/linux/sunrpc/xprtrdma.h
+++ b/include/linux/sunrpc/xprtrdma.h
@@ -41,11 +41,6 @@
 #define _LINUX_SUNRPC_XPRTRDMA_H
 
 /*
- * rpcbind (v3+) RDMA netid.
- */
-#define RPCBIND_NETID_RDMA      "rdma"
-
-/*
  * Constants. Max RPC/NFS header is big enough to account for
  * additional marshaling buffers passed down by Linux client.
  *
diff --git a/include/uapi/linux/nfs_idmap.h b/include/uapi/linux/nfs_idmap.h
index 8d4b1c7b24d4..038e36c96669 100644
--- a/include/uapi/linux/nfs_idmap.h
+++ b/include/uapi/linux/nfs_idmap.h
@@ -1,5 +1,5 @@
 /*
- * include/linux/nfs_idmap.h
+ * include/uapi/linux/nfs_idmap.h
  *
  *  UID and GID to name mapping for clients.
  *