Merge tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Don't destroy user event fields when removal fails

   User event fields are destroyed before the event is removed from
   visibility. But that can fail leaving the still visible event with no
   fields. Move the destroying of the fields to after the event is
   successfully removed from visibility.

 - Initialize function graph state is fork before calling
   copy_exec_state()

   For non-CLONE_VM forks, copy_exec_state() allocates a new
   task_exec_state. If that allocation fails, ftrace_graph_exit_task()
   will free the tasks ret_stack pointer. Since that pointer is still
   using the parent's ret_stack, it mistakenly frees the parent's
   pointer too.

   Call ftrace_graph_init() on the task first which will NULL out the
   new tasks's ret_stack and if the copy fails, it will not free
   anything.

 - Remove FGRAPH_MAX_INDEX

   The macro FGRAPH_MAX_INDEX was added but never used. Remove it.

 - Save ent_size in function graph printing of nested functions

   The function graph tracer needs to look at the next event to see if
   the next event is the return of the current function entry. If it is,
   it prints a single line:

	ktime_get();

   Otherwise it prints it like a nested function:

	tick_nohz_irq_exit() {
	    ktime_get();
	    kcpustat_irq_exit();
	}

   In order to look at the next event, it must save the current event so
   that it has the information to print from it. It saves the event in
   the iterator descriptor called "ent". What it doesn't save is the
   ent_size of the event which is now used to know if the function graph
   arguments are to be printed. The peek doesn't save the size so the
   size used happens to be that of the size of the last event that was
   seen.

   Save the entry event size in the iterator descriptor so that the
   correct size is used.

 - Fix several errors with freeing data in the histogram code

   The histogram code had a lot of leaked or or incorrect accounting
   when failures happen. Correct them.

 - Fix histogram regression of .percent and .graph modifiers

   Up until 6.3 histogram values could have "percent" or "graph"
   modifiers that changed how they were printed. But a change that added
   restricting histograms values from being strings, stack traces and
   other modifiers inadvertently prevented them from using the percent
   and graph modifiers, which were legal use cases for values.

   Put back the percent and graph modifiers.

 - Fix various typos in the comments

 - Set the trace_clock before initializing a histogram with clock
   argument

   The histogram API allows the user to specific which trace clock to
   use via a "clock=" string. The histogram is set up first before the
   clock is checked. If the passed in clock is not valid, it exits
   without fully fixing up the histogram leaving it on the list and a
   use-after-free can trigger.

   Update the clock argument first and if it fails then exit gracefully
   before the histogram trigger is placed on any lists.

 - Restore :mod: trailer after parsing in ftrace_set_clr_event

   The function ftrace_set_clr_event() modifies the parse string and
   needs to put it back to what was passed in. It searches for ":mod:"
   via a strsep() but fails to put back the first ':' in the string.

   Add back the ':' in the passed in string.

 - Take trace_array reference when opening a tracer options file

   The options files are dynamically created and some tracers add their
   own options. When a tracer adds their own list of options, the
   trace_array holding them has an array to hold the list of options for
   each tracer. This array increases in size via a krealloc(), and the
   new entry gets a newly allocated array to hold the options of the new
   tracer being added.

   The element in each entry of the tracer's option array holds a
   pointer back to the trace_array, a pointer to the tracer it is
   associated to, a pointer to the flags of the option.

   The issue is that these arrays are freed when the trace_array is
   freed when its instance it represents is removed from the instances
   directory. There's a race that an open of one of these options files
   can happen when the instance is being removed.

   Add a new helper function to be called by the open function of the
   options file to iterate all existing trace_arrays under a lock and
   find the one that has the given option element in one of it's tracer
   arrays. If found, then update the associated trace_array's reference
   counter to keep it from being freed. If not found, have the open call
   return -ENODEV.

 - Disable interrupts when acquiring the lock in rb_wake_up_waiters()

   The function rb_wake_up_waiters() assumes it will be called in
   interrupt context and does not disable irqs when taking
   cpu_buffer->reader_lock, which can be called in hard interrupt
   context. The issue is in PREEMPT_RT, this function is called in
   thread context leaving this lock open to a deadlock.

   Take the lock with interrupts disabled.

 - Use rcu_assign_pointer() for tmp_ops filter hash

   The tmp_ops used in update_ftrace_direct_mod() assigns its
   filter_hash field directly, but that field is annotated as __rcu and
   sparse complains. Assign it with rcu_assign_pointer()

 - Fix use-after-free in enable_trigger_private_data_free()

   The trace_event_call is accessed through the event_trigger_data's
   trace_event_file pointer to put the trace_event_call on freeing. The
   issue is that the trace_event_file data may have been freed already
   causing a use-after-free. Add a field to the event_trigger_data that
   points directly to the trace_event_call so that it can decrement its
   reference directly without needing to go through the
   trace_event_file.

 - Fix accounting of buffer data remote headers

   trace_buffer_desc_size() and trace_remote_alloc_buffer() undercount
   the number of pages is needed for the asked for size as it doesn't
   take into account the meta data on each page. Add a helper function
   to do the calculation properly and use that in these functions.

 - Catch nr_page_va overflow in ring_buffer_desc sizing

   The number of pages per remote ring buffer is capped by
   ring_buffer_desc::nr_page_va (32 bits). A buffer_size large enough to
   overflow that field would silently allocate a descriptor smaller than
   what was asked for.

 - Do not resize the subbuf order if any per_cpu buffer is disabled

   The mmapping of ring buffers disables resizing the subbuffers, but it
   is done per-cpu whereas the subbuf size change is done for all the
   per_cpu buffers under the buffer->mutex. It could change the size of
   some while the mapping is happening on others. Have the resize of the
   subbuf order check all the per_cpu buffers under the lock to see if
   any of them is disabled before starting and causing an inconsistency
   between buffers that are being mapped.

* tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (25 commits)
  ring-buffer: Check resize_disabled before publishing the new subbuf order
  tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing
  tracing/remotes: Account for ring buffer page header in size calculation
  tracing: Don't dereference trace_event_file in deferred trigger free
  ftrace: Use rcu_assign_pointer() for tmp_ops filter hash
  ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters()
  tracing: Take trace_array reference when opening a tracer options file
  tracing: Fix ring_buffer_read_page_size() kernel-doc
  tracing: Restore :mod: trailer after parsing in ftrace_set_clr_event()
  tracing: Fix memory corruption from a "STACKTRACE" histogram key
  tracing: Fix memory corruption from the histogram stacktrace modifier
  tracing: Undo the registration when enabling the histogram trigger fails
  tracing: Take the reference before publishing the named histogram trigger
  tracing: Set the trace clock before registering the histogram trigger
  tracing: Fix typo "preceeded" in comment
  tracing: Fix typo "availabe" in comment
  tracing: Let histogram values keep the percent and graph modifiers
  tracing: Keep the entry count when the histogram stats allocation fails
  tracing: Free histogram the field rejected for a bad modifier
  tracing: Free histogram the var ref when its initialization fails
  ...

3 files changed, 880 insertions, 0 deletions

diff --git a/Documentation/sunrpc/xdr/nfs4_1.x b/Documentation/sunrpc/xdr/nfs4_1.x
new file mode 100644
index 000000000..e66f396ae
--- /dev/null
+++ b/Documentation/sunrpc/xdr/nfs4_1.x
@@ -0,0 +1,501 @@
+/*
+ * Copyright (c) 2010 IETF Trust and the persons identified
+ * as the document authors.  All rights reserved.
+ *
+ * The document authors are identified in RFC 3530 and
+ * RFC 5661.
+ *
+ * Redistribution and use in source and binary forms, with
+ * or without modification, are permitted provided that the
+ * following conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ *   copyright notice, this list of conditions and the
+ *   following disclaimer.
+ *
+ * - 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.
+ *
+ * - Neither the name of Internet Society, IETF or IETF
+ *   Trust, nor the names of specific contributors, may be
+ *   used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ *   AND CONTRIBUTORS "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 COPYRIGHT OWNER 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.
+ */
+
+pragma header nfs4;
+
+/*
+ * Basic typedefs for RFC 1832 data type definitions
+ */
+typedef int                  int32_t;
+typedef unsigned int         uint32_t;
+typedef hyper                int64_t;
+typedef unsigned hyper       uint64_t;
+
+const NFS4_VERIFIER_SIZE        = 8;
+const NFS4_FHSIZE               = 128;
+
+enum nfsstat4 {
+ NFS4_OK                = 0,    /* everything is okay      */
+ NFS4ERR_PERM           = 1,    /* caller not privileged   */
+ NFS4ERR_NOENT          = 2,    /* no such file/directory  */
+ NFS4ERR_IO             = 5,    /* hard I/O error          */
+ NFS4ERR_NXIO           = 6,    /* no such device          */
+ NFS4ERR_ACCESS         = 13,   /* access denied           */
+ NFS4ERR_EXIST          = 17,   /* file already exists     */
+ NFS4ERR_XDEV           = 18,   /* different filesystems   */
+
+ /*
+  * Please do not allocate value 19; it was used in NFSv3
+  * and we do not want a value in NFSv3 to have a different
+  * meaning in NFSv4.x.
+  */
+
+ NFS4ERR_NOTDIR         = 20,   /* should be a directory   */
+ NFS4ERR_ISDIR          = 21,   /* should not be directory */
+ NFS4ERR_INVAL          = 22,   /* invalid argument        */
+ NFS4ERR_FBIG           = 27,   /* file exceeds server max */
+ NFS4ERR_NOSPC          = 28,   /* no space on filesystem  */
+ NFS4ERR_ROFS           = 30,   /* read-only filesystem    */
+ NFS4ERR_MLINK          = 31,   /* too many hard links     */
+ NFS4ERR_NAMETOOLONG    = 63,   /* name exceeds server max */
+ NFS4ERR_NOTEMPTY       = 66,   /* directory not empty     */
+ NFS4ERR_DQUOT          = 69,   /* hard quota limit reached*/
+ NFS4ERR_STALE          = 70,   /* file no longer exists   */
+ NFS4ERR_BADHANDLE      = 10001,/* Illegal filehandle      */
+ NFS4ERR_BAD_COOKIE     = 10003,/* READDIR cookie is stale */
+ NFS4ERR_NOTSUPP        = 10004,/* operation not supported */
+ NFS4ERR_TOOSMALL       = 10005,/* response limit exceeded */
+ NFS4ERR_SERVERFAULT    = 10006,/* undefined server error  */
+ NFS4ERR_BADTYPE        = 10007,/* type invalid for CREATE */
+ NFS4ERR_DELAY          = 10008,/* file "busy" - retry     */
+ NFS4ERR_SAME           = 10009,/* nverify says attrs same */
+ NFS4ERR_DENIED         = 10010,/* lock unavailable        */
+ NFS4ERR_EXPIRED        = 10011,/* lock lease expired      */
+ NFS4ERR_LOCKED         = 10012,/* I/O failed due to lock  */
+ NFS4ERR_GRACE          = 10013,/* in grace period         */
+ NFS4ERR_FHEXPIRED      = 10014,/* filehandle expired      */
+ NFS4ERR_SHARE_DENIED   = 10015,/* share reserve denied    */
+ NFS4ERR_WRONGSEC       = 10016,/* wrong security flavor   */
+ NFS4ERR_CLID_INUSE     = 10017,/* clientid in use         */
+
+ /* NFS4ERR_RESOURCE is not a valid error in NFSv4.1 */
+ NFS4ERR_RESOURCE       = 10018,/* resource exhaustion     */
+
+ NFS4ERR_MOVED          = 10019,/* filesystem relocated    */
+ NFS4ERR_NOFILEHANDLE   = 10020,/* current FH is not set   */
+ NFS4ERR_MINOR_VERS_MISMATCH= 10021,/* minor vers not supp */
+ NFS4ERR_STALE_CLIENTID = 10022,/* server has rebooted     */
+ NFS4ERR_STALE_STATEID  = 10023,/* server has rebooted     */
+ NFS4ERR_OLD_STATEID    = 10024,/* state is out of sync    */
+ NFS4ERR_BAD_STATEID    = 10025,/* incorrect stateid       */
+ NFS4ERR_BAD_SEQID      = 10026,/* request is out of seq.  */
+ NFS4ERR_NOT_SAME       = 10027,/* verify - attrs not same */
+ NFS4ERR_LOCK_RANGE     = 10028,/* overlapping lock range  */
+ NFS4ERR_SYMLINK        = 10029,/* should be file/directory*/
+ NFS4ERR_RESTOREFH      = 10030,/* no saved filehandle     */
+ NFS4ERR_LEASE_MOVED    = 10031,/* some filesystem moved   */
+ NFS4ERR_ATTRNOTSUPP    = 10032,/* recommended attr not sup*/
+ NFS4ERR_NO_GRACE       = 10033,/* reclaim outside of grace*/
+ NFS4ERR_RECLAIM_BAD    = 10034,/* reclaim error at server */
+ NFS4ERR_RECLAIM_CONFLICT= 10035,/* conflict on reclaim    */
+ NFS4ERR_BADXDR         = 10036,/* XDR decode failed       */
+ NFS4ERR_LOCKS_HELD     = 10037,/* file locks held at CLOSE*/
+ NFS4ERR_OPENMODE       = 10038,/* conflict in OPEN and I/O*/
+ NFS4ERR_BADOWNER       = 10039,/* owner translation bad   */
+ NFS4ERR_BADCHAR        = 10040,/* utf-8 char not supported*/
+ NFS4ERR_BADNAME        = 10041,/* name not supported      */
+ NFS4ERR_BAD_RANGE      = 10042,/* lock range not supported*/
+ NFS4ERR_LOCK_NOTSUPP   = 10043,/* no atomic up/downgrade  */
+ NFS4ERR_OP_ILLEGAL     = 10044,/* undefined operation     */
+ NFS4ERR_DEADLOCK       = 10045,/* file locking deadlock   */
+ NFS4ERR_FILE_OPEN      = 10046,/* open file blocks op.    */
+ NFS4ERR_ADMIN_REVOKED  = 10047,/* lockowner state revoked */
+ NFS4ERR_CB_PATH_DOWN   = 10048,/* callback path down      */
+
+ /* NFSv4.1 errors start here. */
+
+ NFS4ERR_BADIOMODE      = 10049,
+ NFS4ERR_BADLAYOUT      = 10050,
+ NFS4ERR_BAD_SESSION_DIGEST = 10051,
+ NFS4ERR_BADSESSION     = 10052,
+ NFS4ERR_BADSLOT        = 10053,
+ NFS4ERR_COMPLETE_ALREADY = 10054,
+ NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
+ NFS4ERR_DELEG_ALREADY_WANTED = 10056,
+ NFS4ERR_BACK_CHAN_BUSY = 10057,/*backchan reqs outstanding*/
+ NFS4ERR_LAYOUTTRYLATER = 10058,
+ NFS4ERR_LAYOUTUNAVAILABLE = 10059,
+ NFS4ERR_NOMATCHING_LAYOUT = 10060,
+ NFS4ERR_RECALLCONFLICT = 10061,
+ NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
+ NFS4ERR_SEQ_MISORDERED = 10063,/* unexpected seq.ID in req*/
+ NFS4ERR_SEQUENCE_POS   = 10064,/* [CB_]SEQ. op not 1st op */
+ NFS4ERR_REQ_TOO_BIG    = 10065,/* request too big         */
+ NFS4ERR_REP_TOO_BIG    = 10066,/* reply too big           */
+ NFS4ERR_REP_TOO_BIG_TO_CACHE =10067,/* rep. not all cached*/
+ NFS4ERR_RETRY_UNCACHED_REP =10068,/* retry & rep. uncached*/
+ NFS4ERR_UNSAFE_COMPOUND =10069,/* retry/recovery too hard */
+ NFS4ERR_TOO_MANY_OPS   = 10070,/*too many ops in [CB_]COMP*/
+ NFS4ERR_OP_NOT_IN_SESSION =10071,/* op needs [CB_]SEQ. op */
+ NFS4ERR_HASH_ALG_UNSUPP = 10072, /* hash alg. not supp.   */
+                                /* Error 10073 is unused.  */
+ NFS4ERR_CLIENTID_BUSY  = 10074,/* clientid has state      */
+ NFS4ERR_PNFS_IO_HOLE   = 10075,/* IO to _SPARSE file hole */
+ NFS4ERR_SEQ_FALSE_RETRY= 10076,/* Retry != original req.  */
+ NFS4ERR_BAD_HIGH_SLOT  = 10077,/* req has bad highest_slot*/
+ NFS4ERR_DEADSESSION    = 10078,/*new req sent to dead sess*/
+ NFS4ERR_ENCR_ALG_UNSUPP= 10079,/* encr alg. not supp.     */
+ NFS4ERR_PNFS_NO_LAYOUT = 10080,/* I/O without a layout    */
+ NFS4ERR_NOT_ONLY_OP    = 10081,/* addl ops not allowed    */
+ NFS4ERR_WRONG_CRED     = 10082,/* op done by wrong cred   */
+ NFS4ERR_WRONG_TYPE     = 10083,/* op on wrong type object */
+ NFS4ERR_DIRDELEG_UNAVAIL=10084,/* delegation not avail.   */
+ NFS4ERR_REJECT_DELEG   = 10085,/* cb rejected delegation  */
+ NFS4ERR_RETURNCONFLICT = 10086,/* layout get before return*/
+ NFS4ERR_DELEG_REVOKED  = 10087, /* deleg./layout revoked   */
+ NFS4ERR_PARTNER_NOTSUPP = 10088,
+ NFS4ERR_PARTNER_NO_AUTH = 10089,
+ NFS4ERR_UNION_NOTSUPP = 10090,
+ NFS4ERR_OFFLOAD_DENIED = 10091,
+ NFS4ERR_WRONG_LFS = 10092,
+ NFS4ERR_BADLABEL = 10093,
+ NFS4ERR_OFFLOAD_NO_REQS = 10094,
+ NFS4ERR_NOXATTR = 10095,
+ NFS4ERR_XATTR2BIG = 10096
+};
+
+/*
+ * Basic data types
+ */
+typedef opaque		attrlist4<>;
+typedef uint32_t	bitmap4<>;
+typedef opaque		verifier4[NFS4_VERIFIER_SIZE];
+typedef uint64_t        nfs_cookie4;
+typedef opaque		nfs_fh4<NFS4_FHSIZE>;
+
+typedef opaque		utf8string<>;
+typedef utf8string	utf8str_cis;
+typedef utf8string	utf8str_cs;
+typedef utf8string	utf8str_mixed;
+
+typedef utf8str_cs      component4;
+typedef utf8str_cs      linktext4;
+typedef component4      pathname4<>;
+
+/*
+ * Timeval
+ */
+struct nfstime4 {
+	int64_t		seconds;
+	uint32_t	nseconds;
+};
+
+/*
+ * File attribute container
+ */
+struct fattr4 {
+        bitmap4         attrmask;
+        attrlist4       attr_vals;
+};
+
+/*
+ * Stateid
+ */
+struct stateid4 {
+        uint32_t        seqid;
+        opaque          other[12];
+};
+
+/*
+ * The following content was extracted from draft-ietf-nfsv4-delstid
+ */
+
+typedef bool            fattr4_offline;
+
+
+const FATTR4_OFFLINE            = 83;
+
+
+struct open_arguments4 {
+  bitmap4  oa_share_access;
+  bitmap4  oa_share_deny;
+  bitmap4  oa_share_access_want;
+  bitmap4  oa_open_claim;
+  bitmap4  oa_create_mode;
+};
+
+
+enum open_args_share_access4 {
+   OPEN_ARGS_SHARE_ACCESS_READ  = 1,
+   OPEN_ARGS_SHARE_ACCESS_WRITE = 2,
+   OPEN_ARGS_SHARE_ACCESS_BOTH  = 3
+};
+
+
+enum open_args_share_deny4 {
+   OPEN_ARGS_SHARE_DENY_NONE  = 0,
+   OPEN_ARGS_SHARE_DENY_READ  = 1,
+   OPEN_ARGS_SHARE_DENY_WRITE = 2,
+   OPEN_ARGS_SHARE_DENY_BOTH  = 3
+};
+
+
+enum open_args_share_access_want4 {
+   OPEN_ARGS_SHARE_ACCESS_WANT_ANY_DELEG           = 3,
+   OPEN_ARGS_SHARE_ACCESS_WANT_NO_DELEG            = 4,
+   OPEN_ARGS_SHARE_ACCESS_WANT_CANCEL              = 5,
+   OPEN_ARGS_SHARE_ACCESS_WANT_SIGNAL_DELEG_WHEN_RESRC_AVAIL
+                                                   = 17,
+   OPEN_ARGS_SHARE_ACCESS_WANT_PUSH_DELEG_WHEN_UNCONTENDED
+                                                   = 18,
+   OPEN_ARGS_SHARE_ACCESS_WANT_DELEG_TIMESTAMPS    = 20,
+   OPEN_ARGS_SHARE_ACCESS_WANT_OPEN_XOR_DELEGATION = 21
+};
+
+
+enum open_args_open_claim4 {
+   OPEN_ARGS_OPEN_CLAIM_NULL          = 0,
+   OPEN_ARGS_OPEN_CLAIM_PREVIOUS      = 1,
+   OPEN_ARGS_OPEN_CLAIM_DELEGATE_CUR  = 2,
+   OPEN_ARGS_OPEN_CLAIM_DELEGATE_PREV = 3,
+   OPEN_ARGS_OPEN_CLAIM_FH            = 4,
+   OPEN_ARGS_OPEN_CLAIM_DELEG_CUR_FH  = 5,
+   OPEN_ARGS_OPEN_CLAIM_DELEG_PREV_FH = 6
+};
+
+
+enum open_args_createmode4 {
+   OPEN_ARGS_CREATEMODE_UNCHECKED4     = 0,
+   OPEN_ARGS_CREATE_MODE_GUARDED       = 1,
+   OPEN_ARGS_CREATEMODE_EXCLUSIVE4     = 2,
+   OPEN_ARGS_CREATE_MODE_EXCLUSIVE4_1  = 3
+};
+
+
+typedef open_arguments4 fattr4_open_arguments;
+pragma public fattr4_open_arguments;
+
+
+%/*
+% * Determine what OPEN supports.
+% */
+const FATTR4_OPEN_ARGUMENTS     = 86;
+
+
+
+
+const OPEN4_RESULT_NO_OPEN_STATEID = 0x00000010;
+
+
+/*
+ * attributes for the delegation times being
+ * cached and served by the "client"
+ */
+typedef nfstime4        fattr4_time_deleg_access;
+typedef nfstime4        fattr4_time_deleg_modify;
+pragma public 		fattr4_time_deleg_access;
+pragma public		fattr4_time_deleg_modify;
+
+
+%/*
+% * New RECOMMENDED Attribute for
+% * delegation caching of times
+% */
+const FATTR4_TIME_DELEG_ACCESS  = 84;
+const FATTR4_TIME_DELEG_MODIFY  = 85;
+
+
+
+/* new flags for share_access field of OPEN4args */
+const OPEN4_SHARE_ACCESS_WANT_DELEG_MASK        = 0xFF00;
+const OPEN4_SHARE_ACCESS_WANT_NO_PREFERENCE     = 0x0000;
+const OPEN4_SHARE_ACCESS_WANT_READ_DELEG        = 0x0100;
+const OPEN4_SHARE_ACCESS_WANT_WRITE_DELEG       = 0x0200;
+const OPEN4_SHARE_ACCESS_WANT_ANY_DELEG         = 0x0300;
+const OPEN4_SHARE_ACCESS_WANT_NO_DELEG          = 0x0400;
+const OPEN4_SHARE_ACCESS_WANT_CANCEL            = 0x0500;
+
+const OPEN4_SHARE_ACCESS_WANT_SIGNAL_DELEG_WHEN_RESRC_AVAIL = 0x10000;
+const OPEN4_SHARE_ACCESS_WANT_PUSH_DELEG_WHEN_UNCONTENDED = 0x20000;
+const OPEN4_SHARE_ACCESS_WANT_DELEG_TIMESTAMPS = 0x100000;
+const OPEN4_SHARE_ACCESS_WANT_OPEN_XOR_DELEGATION = 0x200000;
+
+enum open_delegation_type4 {
+       OPEN_DELEGATE_NONE                  = 0,
+       OPEN_DELEGATE_READ                  = 1,
+       OPEN_DELEGATE_WRITE                 = 2,
+       OPEN_DELEGATE_NONE_EXT              = 3, /* new to v4.1 */
+       OPEN_DELEGATE_READ_ATTRS_DELEG      = 4,
+       OPEN_DELEGATE_WRITE_ATTRS_DELEG     = 5
+};
+
+
+/*
+ * The following content was extracted from draft-ietf-nfsv4-posix-acls
+ */
+
+enum aclmodel4 {
+	ACL_MODEL_NFS4		= 1,
+	ACL_MODEL_POSIX_DRAFT	= 2,
+	ACL_MODEL_NONE		= 3
+};
+pragma public aclmodel4;
+
+enum aclscope4 {
+	ACL_SCOPE_FILE_OBJECT	= 1,
+	ACL_SCOPE_FILE_SYSTEM	= 2,
+	ACL_SCOPE_SERVER	= 3
+};
+pragma public aclscope4;
+
+enum posixacetag4 {
+	POSIXACE4_TAG_USER_OBJ	= 1,
+	POSIXACE4_TAG_USER	= 2,
+	POSIXACE4_TAG_GROUP_OBJ	= 3,
+	POSIXACE4_TAG_GROUP	= 4,
+	POSIXACE4_TAG_MASK	= 5,
+	POSIXACE4_TAG_OTHER	= 6
+};
+pragma public posixacetag4;
+
+typedef uint32_t	posixaceperm4;
+pragma public posixaceperm4;
+
+/* Bit definitions for posixaceperm4. */
+const POSIXACE4_PERM_EXECUTE	= 0x00000001;
+const POSIXACE4_PERM_WRITE	= 0x00000002;
+const POSIXACE4_PERM_READ	= 0x00000004;
+
+struct posixace4 {
+	posixacetag4		tag;
+	posixaceperm4		perm;
+	utf8str_mixed		who;
+};
+
+typedef aclmodel4	fattr4_acl_trueform;
+typedef aclscope4	fattr4_acl_trueform_scope;
+typedef posixace4	fattr4_posix_default_acl<>;
+typedef posixace4	fattr4_posix_access_acl<>;
+
+%/*
+% * New for POSIX ACL extension
+% */
+const FATTR4_ACL_TRUEFORM	= 89;
+const FATTR4_ACL_TRUEFORM_SCOPE	= 90;
+const FATTR4_POSIX_DEFAULT_ACL	= 91;
+const FATTR4_POSIX_ACCESS_ACL	= 92;
+
+/*
+ * Directory notification types.
+ */
+enum notify_type4 {
+        NOTIFY4_CHANGE_CHILD_ATTRS = 0,
+        NOTIFY4_CHANGE_DIR_ATTRS = 1,
+        NOTIFY4_REMOVE_ENTRY = 2,
+        NOTIFY4_ADD_ENTRY = 3,
+        NOTIFY4_RENAME_ENTRY = 4,
+        NOTIFY4_CHANGE_COOKIE_VERIFIER = 5,
+        /* Proposed in RFC8881bis */
+        NOTIFY4_GFLAG_EXTEND = 6,
+        NOTIFY4_AUFLAG_VALID = 7,
+        NOTIFY4_AUFLAG_USER = 8,
+        NOTIFY4_AUFLAG_GROUP = 9,
+        NOTIFY4_AUFLAG_OTHER = 10,
+        NOTIFY4_CHANGE_AUTH = 11,
+        NOTIFY4_CFLAG_ORDER = 12,
+        NOTIFY4_AUFLAG_GANOW = 13,
+        NOTIFY4_AUFLAG_GALATER = 14,
+        NOTIFY4_CHANGE_GA = 15,
+        NOTIFY4_CHANGE_AMASK = 16
+};
+
+/* Changed entry information.  */
+struct notify_entry4 {
+        component4      ne_file;
+        fattr4          ne_attrs;
+};
+
+/* Previous entry information */
+struct prev_entry4 {
+        notify_entry4   pe_prev_entry;
+        /* what READDIR returned for this entry */
+        nfs_cookie4     pe_prev_entry_cookie;
+};
+
+struct notify_remove4 {
+        notify_entry4   nrm_old_entry;
+        nfs_cookie4     nrm_old_entry_cookie;
+};
+pragma public notify_remove4;
+
+struct notify_add4 {
+        /*
+         * Information on object
+         * possibly renamed over.
+         */
+        notify_remove4      nad_old_entry<1>;
+        notify_entry4       nad_new_entry;
+        /* what READDIR would have returned for this entry */
+        nfs_cookie4         nad_new_entry_cookie<1>;
+        prev_entry4         nad_prev_entry<1>;
+        bool                nad_last_entry;
+};
+pragma public notify_add4;
+
+struct notify_attr4 {
+        notify_entry4   na_changed_entry;
+};
+pragma public notify_attr4;
+
+struct notify_rename4 {
+        notify_remove4  nrn_old_entry;
+        notify_add4     nrn_new_entry;
+};
+pragma public notify_rename4;
+
+struct notify_verifier4 {
+        verifier4       nv_old_cookieverf;
+        verifier4       nv_new_cookieverf;
+};
+
+/*
+ * Objects of type notify_<>4 and
+ * notify_device_<>4 are encoded in this.
+ */
+typedef opaque notifylist4<>;
+
+struct notify4 {
+        /* composed from notify_type4 or notify_deviceid_type4 */
+        bitmap4         notify_mask;
+        notifylist4     notify_vals;
+};
+
+struct CB_NOTIFY4args {
+        stateid4    cna_stateid;
+        nfs_fh4     cna_fh;
+        notify4     cna_changes<>;
+};
+pragma public CB_NOTIFY4args;
+
+struct CB_NOTIFY4res {
+        nfsstat4    cnr_status;
+};
diff --git a/Documentation/sunrpc/xdr/nlm3.x b/Documentation/sunrpc/xdr/nlm3.x
new file mode 100644
index 000000000..b2e704f7b
--- /dev/null
+++ b/Documentation/sunrpc/xdr/nlm3.x
@@ -0,0 +1,168 @@
+/*
+ * This file was extracted by hand from
+ * https://pubs.opengroup.org/onlinepubs/9629799/chap10.htm#tagcjh_11_03
+ */
+
+/*
+ * The NLMv3 protocol
+ */
+
+pragma header nlm3;
+
+const LM_MAXSTRLEN = 1024;
+
+const LM_MAXNAMELEN = 1025;
+
+const MAXNETOBJ_SZ = 1024;
+
+typedef opaque netobj<MAXNETOBJ_SZ>;
+
+enum nlm_stats {
+	LCK_GRANTED = 0,
+	LCK_DENIED = 1,
+	LCK_DENIED_NOLOCKS = 2,
+	LCK_BLOCKED = 3,
+	LCK_DENIED_GRACE_PERIOD = 4
+};
+
+pragma big_endian nlm_stats;
+
+struct nlm_stat {
+	nlm_stats	stat;
+};
+
+struct nlm_res {
+	netobj		cookie;
+	nlm_stat	stat;
+};
+
+struct nlm_holder {
+	bool		exclusive;
+	int		uppid;
+	netobj		oh;
+	unsigned int	l_offset;
+	unsigned int	l_len;
+};
+
+union nlm_testrply switch (nlm_stats stat) {
+	case LCK_DENIED:
+		nlm_holder	holder;
+	default:
+		void;
+};
+
+struct nlm_testres {
+	netobj		cookie;
+	nlm_testrply	test_stat;
+};
+
+struct nlm_lock {
+	string		caller_name<LM_MAXSTRLEN>;
+	netobj		fh;
+	netobj		oh;
+	int		uppid;
+	unsigned int	l_offset;
+	unsigned int	l_len;
+};
+
+struct nlm_lockargs {
+	netobj		cookie;
+	bool		block;
+	bool		exclusive;
+	nlm_lock	alock;
+	bool		reclaim;
+	int		state;
+};
+
+struct nlm_cancargs {
+	netobj		cookie;
+	bool		block;
+	bool		exclusive;
+	nlm_lock	alock;
+};
+
+struct nlm_testargs {
+	netobj		cookie;
+	bool		exclusive;
+	nlm_lock	alock;
+};
+
+struct nlm_unlockargs {
+	netobj		cookie;
+	nlm_lock	alock;
+};
+
+enum fsh_mode {
+	fsm_DN = 0,
+	fsm_DR = 1,
+	fsm_DW = 2,
+	fsm_DRW = 3
+};
+
+enum fsh_access {
+	fsa_NONE = 0,
+	fsa_R = 1,
+	fsa_W = 2,
+	fsa_RW = 3
+};
+
+struct nlm_share {
+	string		caller_name<LM_MAXSTRLEN>;
+	netobj		fh;
+	netobj		oh;
+	fsh_mode	mode;
+	fsh_access	access;
+};
+
+struct nlm_shareargs {
+	netobj		cookie;
+	nlm_share	share;
+	bool		reclaim;
+};
+
+struct nlm_shareres {
+	netobj		cookie;
+	nlm_stats	stat;
+	int		sequence;
+};
+
+struct nlm_notify {
+	string		name<LM_MAXNAMELEN>;
+	long		state;
+};
+
+/*
+ * Argument for the Linux-private SM_NOTIFY procedure
+ */
+const SM_PRIV_SIZE = 16;
+
+struct nlm_notifyargs {
+	nlm_notify	notify;
+	opaque		private[SM_PRIV_SIZE];
+};
+
+program NLM_PROG {
+	version NLM_VERS {
+		void		NLM_NULL(void)				= 0;
+		nlm_testres	NLM_TEST(nlm_testargs)			= 1;
+		nlm_res		NLM_LOCK(nlm_lockargs)			= 2;
+		nlm_res		NLM_CANCEL(nlm_cancargs)		= 3;
+		nlm_res		NLM_UNLOCK(nlm_unlockargs)		= 4;
+		nlm_res		NLM_GRANTED(nlm_testargs)		= 5;
+		void		NLM_TEST_MSG(nlm_testargs)		= 6;
+		void		NLM_LOCK_MSG(nlm_lockargs)		= 7;
+		void		NLM_CANCEL_MSG(nlm_cancargs)		= 8;
+		void		NLM_UNLOCK_MSG(nlm_unlockargs)		= 9;
+		void		NLM_GRANTED_MSG(nlm_testargs)		= 10;
+		void		NLM_TEST_RES(nlm_testres)		= 11;
+		void		NLM_LOCK_RES(nlm_res)			= 12;
+		void		NLM_CANCEL_RES(nlm_res)			= 13;
+		void		NLM_UNLOCK_RES(nlm_res)			= 14;
+		void		NLM_GRANTED_RES(nlm_res)		= 15;
+		void		NLM_SM_NOTIFY(nlm_notifyargs)		= 16;
+		nlm_shareres	NLM_SHARE(nlm_shareargs)		= 20;
+		nlm_shareres	NLM_UNSHARE(nlm_shareargs)		= 21;
+		nlm_res		NLM_NM_LOCK(nlm_lockargs)		= 22;
+		void		NLM_FREE_ALL(nlm_notify)		= 23;
+	} = 3;
+} = 100021;
diff --git a/Documentation/sunrpc/xdr/nlm4.x b/Documentation/sunrpc/xdr/nlm4.x
new file mode 100644
index 000000000..0c44a80ef
--- /dev/null
+++ b/Documentation/sunrpc/xdr/nlm4.x
@@ -0,0 +1,211 @@
+/*
+ * This file was extracted by hand from
+ * https://www.rfc-editor.org/rfc/rfc1813.html .
+ *
+ * Note that RFC 1813 is Informational. Its official date of
+ * publication (June 1995) is before the IETF required its RFCs to
+ * carry an explicit copyright or other IP ownership notices.
+ *
+ * Note also that RFC 1813 does not specify the whole NLM4 protocol.
+ * In particular, the argument and result types are not present in
+ * that document, and had to be reverse-engineered.
+ */
+
+/*
+ * The NLMv4 protocol
+ */
+
+pragma header nlm4;
+
+/*
+ * The following definitions are missing in RFC 1813,
+ * but can be found in the OpenNetworking Network Lock
+ * Manager protocol:
+ *
+ * https://pubs.opengroup.org/onlinepubs/9629799/chap10.htm
+ */
+
+const LM_MAXSTRLEN = 1024;
+
+const LM_MAXNAMELEN = 1025;
+
+const MAXNETOBJ_SZ = 1024;
+
+typedef opaque netobj<MAXNETOBJ_SZ>;
+
+enum fsh4_mode {
+	fsm_DN = 0,		/* deny none */
+	fsm_DR = 1,		/* deny read */
+	fsm_DW = 2,		/* deny write */
+	fsm_DRW = 3		/* deny read/write */
+};
+
+enum fsh4_access {
+	fsa_NONE = 0,		/* for completeness */
+	fsa_R = 1,		/* read-only */
+	fsa_W = 2,		/* write-only */
+	fsa_RW = 3		/* read/write */
+};
+
+/*
+ * The following definitions come from the OpenNetworking
+ * Network Status Monitor protocol:
+ *
+ * https://pubs.opengroup.org/onlinepubs/9629799/chap11.htm
+ */
+
+const SM_MAXSTRLEN = 1024;
+
+/*
+ * The NLM protocol as extracted from:
+ * https://tools.ietf.org/html/rfc1813 Appendix II
+ */
+
+typedef unsigned hyper uint64;
+
+typedef hyper int64;
+
+typedef unsigned long uint32;
+
+typedef long int32;
+
+enum nlm4_stats {
+	NLM4_GRANTED = 0,
+	NLM4_DENIED = 1,
+	NLM4_DENIED_NOLOCKS = 2,
+	NLM4_BLOCKED = 3,
+	NLM4_DENIED_GRACE_PERIOD = 4,
+	NLM4_DEADLCK = 5,
+	NLM4_ROFS = 6,
+	NLM4_STALE_FH = 7,
+	NLM4_FBIG = 8,
+	NLM4_FAILED = 9
+};
+
+pragma big_endian nlm4_stats;
+
+struct nlm4_holder {
+	bool		exclusive;
+	int32		svid;
+	netobj		oh;
+	uint64		l_offset;
+	uint64		l_len;
+};
+
+union nlm4_testrply switch (nlm4_stats stat) {
+	case NLM4_DENIED:
+		nlm4_holder	holder;
+	default:
+		void;
+};
+
+struct nlm4_stat {
+	nlm4_stats	stat;
+};
+
+struct nlm4_res {
+	netobj		cookie;
+	nlm4_stat	stat;
+};
+
+struct nlm4_testres {
+	netobj		cookie;
+	nlm4_testrply	stat;
+};
+
+struct nlm4_lock {
+	string		caller_name<LM_MAXSTRLEN>;
+	netobj		fh;
+	netobj		oh;
+	int32		svid;
+	uint64		l_offset;
+	uint64		l_len;
+};
+
+struct nlm4_lockargs {
+	netobj		cookie;
+	bool		block;
+	bool		exclusive;
+	nlm4_lock	alock;
+	bool		reclaim;
+	int32		state;
+};
+
+struct nlm4_cancargs {
+	netobj		cookie;
+	bool		block;
+	bool		exclusive;
+	nlm4_lock	alock;
+};
+
+struct nlm4_testargs {
+	netobj		cookie;
+	bool		exclusive;
+	nlm4_lock	alock;
+};
+
+struct nlm4_unlockargs {
+	netobj		cookie;
+	nlm4_lock	alock;
+};
+
+struct nlm4_share {
+	string		caller_name<LM_MAXSTRLEN>;
+	netobj		fh;
+	netobj		oh;
+	fsh4_mode	mode;
+	fsh4_access	access;
+};
+
+struct nlm4_shareargs {
+	netobj		cookie;
+	nlm4_share	share;
+	bool		reclaim;
+};
+
+struct nlm4_shareres {
+	netobj		cookie;
+	nlm4_stats	stat;
+	int32		sequence;
+};
+
+struct nlm4_notify {
+	string		name<LM_MAXNAMELEN>;
+	int32		state;
+};
+
+/*
+ * Argument for the Linux-private SM_NOTIFY procedure
+ */
+const SM_PRIV_SIZE = 16;
+
+struct nlm4_notifyargs {
+	nlm4_notify	notify;
+	opaque		private[SM_PRIV_SIZE];
+};
+
+program NLM4_PROG {
+	version NLM4_VERS {
+		void		NLMPROC4_NULL(void)			= 0;
+		nlm4_testres	NLMPROC4_TEST(nlm4_testargs)		= 1;
+		nlm4_res	NLMPROC4_LOCK(nlm4_lockargs)		= 2;
+		nlm4_res	NLMPROC4_CANCEL(nlm4_cancargs)		= 3;
+		nlm4_res	NLMPROC4_UNLOCK(nlm4_unlockargs)	= 4;
+		nlm4_res	NLMPROC4_GRANTED(nlm4_testargs)		= 5;
+		void		NLMPROC4_TEST_MSG(nlm4_testargs)	= 6;
+		void		NLMPROC4_LOCK_MSG(nlm4_lockargs)	= 7;
+		void		NLMPROC4_CANCEL_MSG(nlm4_cancargs)	= 8;
+		void		NLMPROC4_UNLOCK_MSG(nlm4_unlockargs)	= 9;
+		void		NLMPROC4_GRANTED_MSG(nlm4_testargs)	= 10;
+		void		NLMPROC4_TEST_RES(nlm4_testres)		= 11;
+		void		NLMPROC4_LOCK_RES(nlm4_res)		= 12;
+		void		NLMPROC4_CANCEL_RES(nlm4_res)		= 13;
+		void		NLMPROC4_UNLOCK_RES(nlm4_res)		= 14;
+		void		NLMPROC4_GRANTED_RES(nlm4_res)		= 15;
+		void		NLMPROC4_SM_NOTIFY(nlm4_notifyargs)	= 16;
+		nlm4_shareres	NLMPROC4_SHARE(nlm4_shareargs)		= 20;
+		nlm4_shareres	NLMPROC4_UNSHARE(nlm4_shareargs)	= 21;
+		nlm4_res	NLMPROC4_NM_LOCK(nlm4_lockargs)		= 22;
+		void		NLMPROC4_FREE_ALL(nlm4_notify)		= 23;
+	} = 4;
+} = 100021;