Merge tag 'nfs-for-4.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client updates from Anna Schumaker:
 "Highlights include:

  Features:
   - Add support for the NFS v4.2 COPY operation
   - Add support for NFS/RDMA over IPv6

  Bugfixes and cleanups:
   - Avoid race that crashes nfs_init_commit()
   - Fix oops in callback path
   - Fix LOCK/OPEN race when unlinking an open file
   - Choose correct stateids when using delegations in setattr, read and
     write
   - Don't send empty SETATTR after OPEN_CREATE
   - xprtrdma: Prevent server from writing a reply into memory client
     has released
   - xprtrdma: Support using Read list and Reply chunk in one RPC call"

* tag 'nfs-for-4.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (61 commits)
  pnfs: pnfs_update_layout needs to consider if strict iomode checking is on
  nfs/flexfiles: Use the layout segment for reading unless it a IOMODE_RW and reading is disabled
  nfs/flexfiles: Helper function to detect FF_FLAGS_NO_READ_IO
  nfs: avoid race that crashes nfs_init_commit
  NFS: checking for NULL instead of IS_ERR() in nfs_commit_file()
  pnfs: make pnfs_layout_process more robust
  pnfs: rework LAYOUTGET retry handling
  pnfs: lift retry logic from send_layoutget to pnfs_update_layout
  pnfs: fix bad error handling in send_layoutget
  flexfiles: add kerneldoc header to nfs4_ff_layout_prepare_ds
  flexfiles: remove pointless setting of NFS_LAYOUT_RETURN_REQUESTED
  pnfs: only tear down lsegs that precede seqid in LAYOUTRETURN args
  pnfs: keep track of the return sequence number in pnfs_layout_hdr
  pnfs: record sequence in pnfs_layout_segment when it's created
  pnfs: don't merge new ff lsegs with ones that have LAYOUTRETURN bit set
  pNFS/flexfiles: When initing reads or writes, we might have to retry connecting to DSes
  pNFS/flexfiles: When checking for available DSes, conditionally check for MDS io
  pNFS/flexfile: Fix erroneous fall back to read/write through the MDS
  NFS: Reclaim writes via writepage are opportunistic
  NFSv4: Use the right stateid for delegations in setattr, read and write
  ...

1 files changed, 23 insertions, 5 deletions

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 011433478a14..bfed6b367350 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -50,12 +50,27 @@ struct nfs4_label {
 
 typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier;
 
-struct nfs_stateid4 {
-	__be32 seqid;
-	char other[NFS4_STATEID_OTHER_SIZE];
-} __attribute__ ((packed));
+struct nfs4_stateid_struct {
+	union {
+		char data[NFS4_STATEID_SIZE];
+		struct {
+			__be32 seqid;
+			char other[NFS4_STATEID_OTHER_SIZE];
+		} __attribute__ ((packed));
+	};
+
+	enum {
+		NFS4_INVALID_STATEID_TYPE = 0,
+		NFS4_SPECIAL_STATEID_TYPE,
+		NFS4_OPEN_STATEID_TYPE,
+		NFS4_LOCK_STATEID_TYPE,
+		NFS4_DELEGATION_STATEID_TYPE,
+		NFS4_LAYOUT_STATEID_TYPE,
+		NFS4_PNFS_DS_STATEID_TYPE,
+	} type;
+};
 
-typedef struct nfs_stateid4 nfs4_stateid;
+typedef struct nfs4_stateid_struct nfs4_stateid;
 
 enum nfs_opnum4 {
 	OP_ACCESS = 3,
@@ -504,6 +519,7 @@ enum {
 	NFSPROC4_CLNT_DEALLOCATE,
 	NFSPROC4_CLNT_LAYOUTSTATS,
 	NFSPROC4_CLNT_CLONE,
+	NFSPROC4_CLNT_COPY,
 };
 
 /* nfs41 types */
@@ -621,7 +637,9 @@ enum pnfs_update_layout_reason {
 	PNFS_UPDATE_LAYOUT_IO_TEST_FAIL,
 	PNFS_UPDATE_LAYOUT_FOUND_CACHED,
 	PNFS_UPDATE_LAYOUT_RETURN,
+	PNFS_UPDATE_LAYOUT_RETRY,
 	PNFS_UPDATE_LAYOUT_BLOCKED,
+	PNFS_UPDATE_LAYOUT_INVALID_OPEN,
 	PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET,
 };