Merge branch 'for-3.16' of git://linux-nfs.org/~bfields/linux

Pull nfsd updates from Bruce Fields:
 "The largest piece is a long-overdue rewrite of the xdr code to remove
  some annoying limitations: for example, there was no way to return
  ACLs larger than 4K, and readdir results were returned only in 4k
  chunks, limiting performance on large directories.

  Also:
        - part of Neil Brown's work to make NFS work reliably over the
          loopback interface (so client and server can run on the same
          machine without deadlocks).  The rest of it is coming through
          other trees.
        - cleanup and bugfixes for some of the server RDMA code, from
          Steve Wise.
        - Various cleanup of NFSv4 state code in preparation for an
          overhaul of the locking, from Jeff, Trond, and Benny.
        - smaller bugfixes and cleanup from Christoph Hellwig and
          Kinglong Mee.

  Thanks to everyone!

  This summer looks likely to be busier than usual for knfsd.  Hopefully
  we won't break it too badly; testing definitely welcomed"

* 'for-3.16' of git://linux-nfs.org/~bfields/linux: (100 commits)
  nfsd4: fix FREE_STATEID lockowner leak
  svcrdma: Fence LOCAL_INV work requests
  svcrdma: refactor marshalling logic
  nfsd: don't halt scanning the DRC LRU list when there's an RC_INPROG entry
  nfs4: remove unused CHANGE_SECURITY_LABEL
  nfsd4: kill READ64
  nfsd4: kill READ32
  nfsd4: simplify server xdr->next_page use
  nfsd4: hash deleg stateid only on successful nfs4_set_delegation
  nfsd4: rename recall_lock to state_lock
  nfsd: remove unneeded zeroing of fields in nfsd4_proc_compound
  nfsd: fix setting of NFS4_OO_CONFIRMED in nfsd4_open
  nfsd4: use recall_lock for delegation hashing
  nfsd: fix laundromat next-run-time calculation
  nfsd: make nfsd4_encode_fattr static
  SUNRPC/NFSD: Remove using of dprintk with KERN_WARNING
  nfsd: remove unused function nfsd_read_file
  nfsd: getattr for FATTR4_WORD0_FILES_AVAIL needs the statfs buffer
  NFSD: Error out when getting more than one fsloc/secinfo/uuid
  NFSD: Using type of uint32_t for ex_nflavors instead of int
  ...

10 files changed, 14 insertions, 248 deletions

diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index dcaad79f54ed..219d79627c05 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -17,13 +17,13 @@
 #include <linux/fs.h>
 #include <linux/kref.h>
 #include <linux/utsname.h>
-#include <linux/nfsd/nfsfh.h>
 #include <linux/lockd/bind.h>
 #include <linux/lockd/xdr.h>
 #ifdef CONFIG_LOCKD_V4
 #include <linux/lockd/xdr4.h>
 #endif
 #include <linux/lockd/debug.h>
+#include <linux/sunrpc/svc.h>
 
 /*
  * Version string
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 12c2cb947df5..a1e3064a8d99 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -399,8 +399,6 @@ enum lock_type4 {
 #define FATTR4_WORD2_LAYOUT_BLKSIZE     (1UL << 1)
 #define FATTR4_WORD2_MDSTHRESHOLD       (1UL << 4)
 #define FATTR4_WORD2_SECURITY_LABEL     (1UL << 16)
-#define FATTR4_WORD2_CHANGE_SECURITY_LABEL \
-                                        (1UL << 17)
 
 /* MDS threshold bitmap bits */
 #define THRESHOLD_RD                    (1UL << 0)
diff --git a/include/linux/nfsd/debug.h b/include/linux/nfsd/debug.h
deleted file mode 100644
index 19ef8375b577..000000000000
--- a/include/linux/nfsd/debug.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * linux/include/linux/nfsd/debug.h
- *
- * Debugging-related stuff for nfsd
- *
- * Copyright (C) 1995 Olaf Kirch <okir@monad.swb.de>
- */
-#ifndef LINUX_NFSD_DEBUG_H
-#define LINUX_NFSD_DEBUG_H
-
-#include <uapi/linux/nfsd/debug.h>
-
-# undef ifdebug
-# ifdef NFSD_DEBUG
-#  define ifdebug(flag)         if (nfsd_debug & NFSDDBG_##flag)
-# else
-#  define ifdebug(flag)         if (0)
-# endif
-#endif /* LINUX_NFSD_DEBUG_H */
diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h
deleted file mode 100644
index 7898c997dfea..000000000000
--- a/include/linux/nfsd/export.h
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * include/linux/nfsd/export.h
- * 
- * Public declarations for NFS exports. The definitions for the
- * syscall interface are in nfsctl.h
- *
- * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
- */
-#ifndef NFSD_EXPORT_H
-#define NFSD_EXPORT_H
-
-# include <linux/nfsd/nfsfh.h>
-#include <uapi/linux/nfsd/export.h>
-
-/*
- * FS Locations
- */
-
-#define MAX_FS_LOCATIONS        128
-
-struct nfsd4_fs_location {
-        char *hosts; /* colon separated list of hosts */
-        char *path;  /* slash separated list of path components */
-};
-
-struct nfsd4_fs_locations {
-        uint32_t locations_count;
-        struct nfsd4_fs_location *locations;
-/* If we're not actually serving this data ourselves (only providing a
- * list of replicas that do serve it) then we set "migrated": */
-        int migrated;
-};
-
-/*
- * We keep an array of pseudoflavors with the export, in order from most
- * to least preferred.  For the foreseeable future, we don't expect more
- * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3,
- * spkm3i, and spkm3p (and using all 8 at once should be rare).
- */
-#define MAX_SECINFO_LIST        8
-
-struct exp_flavor_info {
-        u32     pseudoflavor;
-        u32     flags;
-};
-
-struct svc_export {
-        struct cache_head       h;
-        struct auth_domain *    ex_client;
-        int                     ex_flags;
-        struct path             ex_path;
-        kuid_t                  ex_anon_uid;
-        kgid_t                  ex_anon_gid;
-        int                     ex_fsid;
-        unsigned char *         ex_uuid; /* 16 byte fsid */
-        struct nfsd4_fs_locations ex_fslocs;
-        int                     ex_nflavors;
-        struct exp_flavor_info  ex_flavors[MAX_SECINFO_LIST];
-        struct cache_detail     *cd;
-};
-
-/* an "export key" (expkey) maps a filehandlefragement to an
- * svc_export for a given client.  There can be several per export,
- * for the different fsid types.
- */
-struct svc_expkey {
-        struct cache_head       h;
-
-        struct auth_domain *    ek_client;
-        int                     ek_fsidtype;
-        u32                     ek_fsid[6];
-
-        struct path             ek_path;
-};
-
-#define EX_ISSYNC(exp)          (!((exp)->ex_flags & NFSEXP_ASYNC))
-#define EX_NOHIDE(exp)          ((exp)->ex_flags & NFSEXP_NOHIDE)
-#define EX_WGATHER(exp)         ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
-
-int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp);
-__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
-
-/*
- * Function declarations
- */
-int                     nfsd_export_init(struct net *);
-void                    nfsd_export_shutdown(struct net *);
-void                    nfsd_export_flush(struct net *);
-struct svc_export *     rqst_exp_get_by_name(struct svc_rqst *,
-                                             struct path *);
-struct svc_export *     rqst_exp_parent(struct svc_rqst *,
-                                        struct path *);
-struct svc_export *     rqst_find_fsidzero_export(struct svc_rqst *);
-int                     exp_rootfh(struct net *, struct auth_domain *,
-                                        char *path, struct knfsd_fh *, int maxsize);
-__be32                  exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
-__be32                  nfserrno(int errno);
-
-static inline void exp_put(struct svc_export *exp)
-{
-        cache_put(&exp->h, exp->cd);
-}
-
-static inline void exp_get(struct svc_export *exp)
-{
-        cache_get(&exp->h);
-}
-struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
-
-#endif /* NFSD_EXPORT_H */
diff --git a/include/linux/nfsd/nfsfh.h b/include/linux/nfsd/nfsfh.h
deleted file mode 100644
index a93593f1fa4e..000000000000
--- a/include/linux/nfsd/nfsfh.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * include/linux/nfsd/nfsfh.h
- *
- * This file describes the layout of the file handles as passed
- * over the wire.
- *
- * Earlier versions of knfsd used to sign file handles using keyed MD5
- * or SHA. I've removed this code, because it doesn't give you more
- * security than blocking external access to port 2049 on your firewall.
- *
- * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
- */
-#ifndef _LINUX_NFSD_FH_H
-#define _LINUX_NFSD_FH_H
-
-# include <linux/sunrpc/svc.h>
-#include <uapi/linux/nfsd/nfsfh.h>
-
-static inline __u32 ino_t_to_u32(ino_t ino)
-{
-        return (__u32) ino;
-}
-
-static inline ino_t u32_to_ino_t(__u32 uino)
-{
-        return (ino_t) uino;
-}
-
-/*
- * This is the internal representation of an NFS handle used in knfsd.
- * pre_mtime/post_version will be used to support wcc_attr's in NFSv3.
- */
-typedef struct svc_fh {
-        struct knfsd_fh         fh_handle;      /* FH data */
-        struct dentry *         fh_dentry;      /* validated dentry */
-        struct svc_export *     fh_export;      /* export pointer */
-        int                     fh_maxsize;     /* max size for fh_handle */
-
-        unsigned char           fh_locked;      /* inode locked by us */
-        unsigned char           fh_want_write;  /* remount protection taken */
-
-#ifdef CONFIG_NFSD_V3
-        unsigned char           fh_post_saved;  /* post-op attrs saved */
-        unsigned char           fh_pre_saved;   /* pre-op attrs saved */
-
-        /* Pre-op attributes saved during fh_lock */
-        __u64                   fh_pre_size;    /* size before operation */
-        struct timespec         fh_pre_mtime;   /* mtime before oper */
-        struct timespec         fh_pre_ctime;   /* ctime before oper */
-        /*
-         * pre-op nfsv4 change attr: note must check IS_I_VERSION(inode)
-         *  to find out if it is valid.
-         */
-        u64                     fh_pre_change;
-
-        /* Post-op attributes saved in fh_unlock */
-        struct kstat            fh_post_attr;   /* full attrs after operation */
-        u64                     fh_post_change; /* nfsv4 change; see above */
-#endif /* CONFIG_NFSD_V3 */
-
-} svc_fh;
-
-#endif /* _LINUX_NFSD_FH_H */
diff --git a/include/linux/nfsd/stats.h b/include/linux/nfsd/stats.h
deleted file mode 100644
index e75b2544ff12..000000000000
--- a/include/linux/nfsd/stats.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * linux/include/linux/nfsd/stats.h
- *
- * Statistics for NFS server.
- *
- * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
- */
-#ifndef LINUX_NFSD_STATS_H
-#define LINUX_NFSD_STATS_H
-
-#include <uapi/linux/nfsd/stats.h>
-
-
-struct nfsd_stats {
-        unsigned int    rchits;         /* repcache hits */
-        unsigned int    rcmisses;       /* repcache hits */
-        unsigned int    rcnocache;      /* uncached reqs */
-        unsigned int    fh_stale;       /* FH stale error */
-        unsigned int    fh_lookup;      /* dentry cached */
-        unsigned int    fh_anon;        /* anon file dentry returned */
-        unsigned int    fh_nocache_dir; /* filehandle not found in dcache */
-        unsigned int    fh_nocache_nondir;      /* filehandle not found in dcache */
-        unsigned int    io_read;        /* bytes returned to read requests */
-        unsigned int    io_write;       /* bytes passed in write requests */
-        unsigned int    th_cnt;         /* number of available threads */
-        unsigned int    th_usage[10];   /* number of ticks during which n perdeciles
-                                         * of available threads were in use */
-        unsigned int    th_fullcnt;     /* number of times last free thread was used */
-        unsigned int    ra_size;        /* size of ra cache */
-        unsigned int    ra_depth[11];   /* number of times ra entry was found that deep
-                                         * in the cache (10percentiles). [10] = not found */
-#ifdef CONFIG_NFSD_V4
-        unsigned int    nfs4_opcount[LAST_NFS4_OP + 1]; /* count of individual nfsv4 operations */
-#endif
-
-};
-
-
-extern struct nfsd_stats        nfsdstats;
-extern struct svc_stat          nfsd_svcstats;
-
-void    nfsd_stat_init(void);
-void    nfsd_stat_shutdown(void);
-
-#endif /* LINUX_NFSD_STATS_H */
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 04e763221246..1bc7cd05b22e 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -244,6 +244,7 @@ struct svc_rqst {
         struct page *           rq_pages[RPCSVC_MAXPAGES];
         struct page *           *rq_respages;   /* points into rq_pages */
         struct page *           *rq_next_page; /* next reply page to use */
+        struct page *           *rq_page_end;  /* one past the last page */
 
         struct kvec             rq_vec[RPCSVC_MAXPAGES]; /* generally useful.. */
 
@@ -254,11 +255,15 @@ struct svc_rqst {
         u32                     rq_prot;        /* IP protocol */
         unsigned short
                                 rq_secure  : 1; /* secure port */
+        unsigned short          rq_local   : 1; /* local request */
 
         void *                  rq_argp;        /* decoded arguments */
         void *                  rq_resp;        /* xdr'd results */
         void *                  rq_auth_data;   /* flavor-specific data */
-
+        int                     rq_auth_slack;  /* extra space xdr code
+                                                 * should leave in head
+                                                 * for krb5i, krb5p.
+                                                 */
         int                     rq_reserved;    /* space on socket outq
                                                  * reserved for this request
                                                  */
@@ -454,11 +459,7 @@ char *		   svc_print_addr(struct svc_rqst *, char *, size_t);
  */
 static inline void svc_reserve_auth(struct svc_rqst *rqstp, int space)
 {
-        int added_space = 0;
-
-        if (rqstp->rq_authop->flavour)
-                added_space = RPC_MAX_AUTH_SIZE;
-        svc_reserve(rqstp, space + added_space);
+        svc_reserve(rqstp, space + rqstp->rq_auth_slack);
 }
 
 #endif /* SUNRPC_SVC_H */
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index 0b8e3e6bdacf..5cf99a016368 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -115,14 +115,13 @@ struct svc_rdma_fastreg_mr {
         struct list_head frmr_list;
 };
 struct svc_rdma_req_map {
-        struct svc_rdma_fastreg_mr *frmr;
         unsigned long count;
         union {
                 struct kvec sge[RPCSVC_MAXPAGES];
                 struct svc_rdma_chunk_sge ch[RPCSVC_MAXPAGES];
+                unsigned long lkey[RPCSVC_MAXPAGES];
         };
 };
-#define RDMACTXT_F_FAST_UNREG   1
 #define RDMACTXT_F_LAST_CTXT    2
 
 #define SVCRDMA_DEVCAP_FAST_REG         1       /* fast mr registration */
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index b05963f09ebf..7235040a19b2 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -24,6 +24,7 @@ struct svc_xprt_ops {
         void            (*xpo_release_rqst)(struct svc_rqst *);
         void            (*xpo_detach)(struct svc_xprt *);
         void            (*xpo_free)(struct svc_xprt *);
+        int             (*xpo_secure_port)(struct svc_rqst *);
 };
 
 struct svc_xprt_class {
@@ -63,6 +64,7 @@ struct svc_xprt {
 #define XPT_DETACHED    10              /* detached from tempsocks list */
 #define XPT_LISTENER    11              /* listening endpoint */
 #define XPT_CACHE_AUTH  12              /* cache auth info */
+#define XPT_LOCAL       13              /* connection from loopback interface */
 
         struct svc_serv         *xpt_server;    /* service for transport */
         atomic_t                xpt_reserved;   /* space on outq that is rsvd */
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 15f9204ee70b..70c6b92e15a7 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -215,6 +215,9 @@ typedef int	(*kxdrdproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
 
 extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
 extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
+extern void xdr_commit_encode(struct xdr_stream *xdr);
+extern void xdr_truncate_encode(struct xdr_stream *xdr, size_t len);
+extern int xdr_restrict_buflen(struct xdr_stream *xdr, int newbuflen);
 extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
                 unsigned int base, unsigned int len);
 extern unsigned int xdr_stream_pos(const struct xdr_stream *xdr);