Merge tag 'nfs-for-5.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:
   - Fixes for NFS I/O request leakages
   - Fix error handling paths in the NFS I/O recoalescing code
   - Reinitialise NFSv4.1 sequence results before retransmitting a
     request
   - Fix a soft lockup in the delegation recovery code
   - Bulk destroy of layouts needs to be safe w.r.t. umount
   - Prevent thundering herd issues when the SUNRPC socket is not
     connected
   - Respect RPC call timeouts when retrying transmission

  Features:
   - Convert rpc auth layer to use xdr_streams
   - Config option to disable insecure RPCSEC_GSS crypto types
   - Reduce size of RPC receive buffers
   - Readdirplus optimization by cache mechanism
   - Convert SUNRPC socket send code to use iov_iter()
   - SUNRPC micro-optimisations to avoid indirect calls
   - Add support for the pNFS LAYOUTERROR operation and use it with the
     pNFS/flexfiles driver
   - Add trace events to report non-zero NFS status codes
   - Various removals of unnecessary dprintks

  Bugfixes and cleanups:
   - Fix a number of sparse warnings and documentation format warnings
   - Fix nfs_parse_devname to not modify it's argument
   - Fix potential corruption of page being written through pNFS/blocks
   - fix xfstest generic/099 failures on nfsv3
   - Avoid NFSv4.1 "false retries" when RPC calls are interrupted
   - Abort I/O early if the pNFS/flexfiles layout segment was
     invalidated
   - Avoid unnecessary pNFS/flexfiles layout invalidations"

* tag 'nfs-for-5.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (90 commits)
  SUNRPC: Take the transport send lock before binding+connecting
  SUNRPC: Micro-optimise when the task is known not to be sleeping
  SUNRPC: Check whether the task was transmitted before rebind/reconnect
  SUNRPC: Remove redundant calls to RPC_IS_QUEUED()
  SUNRPC: Clean up
  SUNRPC: Respect RPC call timeouts when retrying transmission
  SUNRPC: Fix up RPC back channel transmission
  SUNRPC: Prevent thundering herd when the socket is not connected
  SUNRPC: Allow dynamic allocation of back channel slots
  NFSv4.1: Bump the default callback session slot count to 16
  SUNRPC: Convert remaining GFP_NOIO, and GFP_NOWAIT sites in sunrpc
  NFS/flexfiles: Clean up mirror DS initialisation
  NFS/flexfiles: Remove dead code in ff_layout_mirror_valid()
  NFS/flexfile: Simplify nfs4_ff_layout_select_ds_stateid()
  NFS/flexfile: Simplify nfs4_ff_layout_ds_version()
  NFS/flexfiles: Simplify ff_layout_get_ds_cred()
  NFS/flexfiles: Simplify nfs4_ff_find_or_create_ds_client()
  NFS/flexfiles: Simplify nfs4_ff_layout_select_ds_fh()
  NFS/flexfiles: Speed up read failover when DSes are down
  NFS/flexfiles: Don't invalidate DS deviceids for being unresponsive
  ...

1 files changed, 36 insertions, 1 deletions

diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 441a93ebcac0..9b8324ec08f3 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -383,6 +383,41 @@ struct nfs42_layoutstat_data {
 	struct nfs42_layoutstat_res res;
 };
 
+struct nfs42_device_error {
+	struct nfs4_deviceid dev_id;
+	int status;
+	enum nfs_opnum4 opnum;
+};
+
+struct nfs42_layout_error {
+	__u64 offset;
+	__u64 length;
+	nfs4_stateid stateid;
+	struct nfs42_device_error errors[1];
+};
+
+#define NFS42_LAYOUTERROR_MAX 5
+
+struct nfs42_layouterror_args {
+	struct nfs4_sequence_args seq_args;
+	struct inode *inode;
+	unsigned int num_errors;
+	struct nfs42_layout_error errors[NFS42_LAYOUTERROR_MAX];
+};
+
+struct nfs42_layouterror_res {
+	struct nfs4_sequence_res seq_res;
+	unsigned int num_errors;
+	int rpc_status;
+};
+
+struct nfs42_layouterror_data {
+	struct nfs42_layouterror_args args;
+	struct nfs42_layouterror_res res;
+	struct inode *inode;
+	struct pnfs_layout_segment *lseg;
+};
+
 struct nfs42_clone_args {
 	struct nfs4_sequence_args	seq_args;
 	struct nfs_fh			*src_fh;
@@ -1549,7 +1584,7 @@ struct nfs_commit_data {
 };
 
 struct nfs_pgio_completion_ops {
-	void	(*error_cleanup)(struct list_head *head);
+	void	(*error_cleanup)(struct list_head *head, int);
 	void	(*init_hdr)(struct nfs_pgio_header *hdr);
 	void	(*completion)(struct nfs_pgio_header *hdr);
 	void	(*reschedule_io)(struct nfs_pgio_header *hdr);