Merge tag 'nfsd-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "This release introduces support for the CB_RECALL_ANY operation. NFSD
  can send this operation to request that clients return any delegations
  they choose. The server uses this operation to handle low memory
  scenarios or indicate to a client when that client has reached the
  maximum number of delegations the server supports.

  The NFSv4.2 READ_PLUS operation has been simplified temporarily whilst
  support for sparse files in local filesystems and the VFS is improved.

  Two major data structure fixes appear in this release:

   - The nfs4_file hash table is replaced with a resizable hash table to
     reduce the latency of NFSv4 OPEN operations.

   - Reference counting in the NFSD filecache has been hardened against
     races.

  In furtherance of removing support for NFSv2 in a subsequent kernel
  release, a new Kconfig option enables server-side support for NFSv2 to
  be left out of a kernel build.

  MAINTAINERS has been updated to indicate that changes to fs/exportfs
  should go through the NFSD tree"

* tag 'nfsd-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (49 commits)
  NFSD: Avoid clashing function prototypes
  SUNRPC: Fix crasher in unwrap_integ_data()
  SUNRPC: Make the svc_authenticate tracepoint conditional
  NFSD: Use only RQ_DROPME to signal the need to drop a reply
  SUNRPC: Clean up xdr_write_pages()
  SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails
  NFSD: add CB_RECALL_ANY tracepoints
  NFSD: add delegation reaper to react to low memory condition
  NFSD: add support for sending CB_RECALL_ANY
  NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker
  trace: Relocate event helper files
  NFSD: pass range end to vfs_fsync_range() instead of count
  lockd: fix file selection in nlmsvc_cancel_blocked
  lockd: ensure we use the correct file descriptor when unlocking
  lockd: set missing fl_flags field when retrieving args
  NFSD: Use struct_size() helper in alloc_session()
  nfsd: return error if nfs4_setacl fails
  lockd: set other missing fields when unlocking files
  NFSD: Add an nfsd_file_fsync tracepoint
  sunrpc: svc: Remove an unused static function svc_ungetu32()
  ...

9 files changed, 32 insertions, 13 deletions

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 8d04b6a5964c..730003c4f4af 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -732,4 +732,17 @@ enum nfs4_setxattr_options {
 	SETXATTR4_CREATE	= 1,
 	SETXATTR4_REPLACE	= 2,
 };
+
+enum {
+	RCA4_TYPE_MASK_RDATA_DLG	= 0,
+	RCA4_TYPE_MASK_WDATA_DLG	= 1,
+	RCA4_TYPE_MASK_DIR_DLG		= 2,
+	RCA4_TYPE_MASK_FILE_LAYOUT	= 3,
+	RCA4_TYPE_MASK_BLK_LAYOUT	= 4,
+	RCA4_TYPE_MASK_OBJ_LAYOUT_MIN	= 8,
+	RCA4_TYPE_MASK_OBJ_LAYOUT_MAX	= 9,
+	RCA4_TYPE_MASK_OTHER_LAYOUT_MIN	= 12,
+	RCA4_TYPE_MASK_OTHER_LAYOUT_MAX	= 15,
+};
+
 #endif
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 88de45491376..ed722dd33b46 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -220,13 +220,6 @@ static inline __be32 svc_getu32(struct kvec *iov)
 	return val;
 }
 
-static inline void svc_ungetu32(struct kvec *iov)
-{
-	__be32 *vp = (__be32 *)iov->iov_base;
-	iov->iov_base = (void *)(vp - 1);
-	iov->iov_len += sizeof(*vp);
-}
-
 static inline void svc_putu32(struct kvec *iov, __be32 val)
 {
 	__be32 *vp = iov->iov_base + iov->iov_len;
@@ -311,7 +304,6 @@ struct svc_rqst {
 	struct auth_domain *	rq_gssclient;	/* "gss/"-style peer info */
 	struct svc_cacherep *	rq_cacherep;	/* cache info */
 	struct task_struct	*rq_task;	/* service thread */
-	spinlock_t		rq_lock;	/* per-request lock */
 	struct net		*rq_bc_net;	/* pointer to backchannel's
 						 * net namespace
 						 */
diff --git a/include/trace/events/rpcgss.h b/include/trace/events/rpcgss.h
index c9048f3e471b..3f121eed369e 100644
--- a/include/trace/events/rpcgss.h
+++ b/include/trace/events/rpcgss.h
@@ -13,7 +13,7 @@
 
 #include <linux/tracepoint.h>
 
-#include <trace/events/sunrpc_base.h>
+#include <trace/misc/sunrpc.h>
 
 /**
  ** GSS-API related trace events
diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h
index fcd3b3f1020a..8f461e04e5f0 100644
--- a/include/trace/events/rpcrdma.h
+++ b/include/trace/events/rpcrdma.h
@@ -15,8 +15,8 @@
 #include <linux/tracepoint.h>
 #include <rdma/ib_cm.h>
 
-#include <trace/events/rdma.h>
-#include <trace/events/sunrpc_base.h>
+#include <trace/misc/rdma.h>
+#include <trace/misc/sunrpc.h>
 
 /**
  ** Event classes
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index f48f2ab9d238..37604e0e5963 100644
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -14,7 +14,7 @@
 #include <linux/net.h>
 #include <linux/tracepoint.h>
 
-#include <trace/events/sunrpc_base.h>
+#include <trace/misc/sunrpc.h>
 
 TRACE_DEFINE_ENUM(SOCK_STREAM);
 TRACE_DEFINE_ENUM(SOCK_DGRAM);
@@ -1666,11 +1666,13 @@ TRACE_DEFINE_ENUM(SVC_COMPLETE);
 #define SVC_RQST_ENDPOINT_VARARGS \
 		__entry->xid, __get_sockaddr(server), __get_sockaddr(client)
 
-TRACE_EVENT(svc_authenticate,
+TRACE_EVENT_CONDITION(svc_authenticate,
 	TP_PROTO(const struct svc_rqst *rqst, int auth_res),
 
 	TP_ARGS(rqst, auth_res),
 
+	TP_CONDITION(auth_res != SVC_OK && auth_res != SVC_COMPLETE),
+
 	TP_STRUCT__entry(
 		SVC_RQST_ENDPOINT_FIELDS(rqst)
 
diff --git a/include/trace/events/fs.h b/include/trace/misc/fs.h
index 738b97f22f36..738b97f22f36 100644
--- a/include/trace/events/fs.h
+++ b/include/trace/misc/fs.h
diff --git a/include/trace/events/nfs.h b/include/trace/misc/nfs.h
index 09ffdbb04134..0d9d48dca38a 100644
--- a/include/trace/events/nfs.h
+++ b/include/trace/misc/nfs.h
@@ -360,6 +360,18 @@ TRACE_DEFINE_ENUM(IOMODE_ANY);
 		{ IOMODE_RW,			"RW" }, \
 		{ IOMODE_ANY,			"ANY" })
 
+#define show_rca_mask(x) \
+	__print_flags(x, "|", \
+		{ BIT(RCA4_TYPE_MASK_RDATA_DLG),	"RDATA_DLG" }, \
+		{ BIT(RCA4_TYPE_MASK_WDATA_DLG),	"WDATA_DLG" }, \
+		{ BIT(RCA4_TYPE_MASK_DIR_DLG),		"DIR_DLG" }, \
+		{ BIT(RCA4_TYPE_MASK_FILE_LAYOUT),	"FILE_LAYOUT" }, \
+		{ BIT(RCA4_TYPE_MASK_BLK_LAYOUT),	"BLK_LAYOUT" }, \
+		{ BIT(RCA4_TYPE_MASK_OBJ_LAYOUT_MIN),	"OBJ_LAYOUT_MIN" }, \
+		{ BIT(RCA4_TYPE_MASK_OBJ_LAYOUT_MAX),	"OBJ_LAYOUT_MAX" }, \
+		{ BIT(RCA4_TYPE_MASK_OTHER_LAYOUT_MIN),	"OTHER_LAYOUT_MIN" }, \
+		{ BIT(RCA4_TYPE_MASK_OTHER_LAYOUT_MAX),	"OTHER_LAYOUT_MAX" })
+
 #define show_nfs4_seq4_status(x) \
 	__print_flags(x, "|", \
 		{ SEQ4_STATUS_CB_PATH_DOWN,		"CB_PATH_DOWN" }, \
diff --git a/include/trace/events/rdma.h b/include/trace/misc/rdma.h
index 81bb454fc288..81bb454fc288 100644
--- a/include/trace/events/rdma.h
+++ b/include/trace/misc/rdma.h
diff --git a/include/trace/events/sunrpc_base.h b/include/trace/misc/sunrpc.h
index 588557d07ea8..588557d07ea8 100644
--- a/include/trace/events/sunrpc_base.h
+++ b/include/trace/misc/sunrpc.h