Linux/linux 27db64ffs/nfs nfs4proc.c pnfs.h, fs/nfs/flexfilelayout flexfilelayout.c

Merge tag 'nfs-for-4.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Hightlights include:

   - fix an rcu deadlock in nfs_delegation_find_inode()

   - fix NFSv4 deadlocks due to not freeing the session slot in
     layoutget

   - don't send layoutreturn if the layout is already invalid

   - prevent duplicate XID allocation

   - flexfiles: Don't tie up all the rpciod threads in resends"

* tag 'nfs-for-4.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  pNFS/flexfiles: Process writeback resends from nfsiod context as well
  pNFS/flexfiles: Don't tie up all the rpciod threads in resends
  sunrpc: Prevent duplicate XID allocation
  pNFS: Don't send layoutreturn if the layout is already invalid
  pNFS: Always free the session slot on error in nfs4_layoutget_handle_exception
  NFS: Fix an rcu deadlock in nfs_delegation_find_inode()
DeltaFile
+26-7fs/nfs/nfs4proc.c
+16-5fs/nfs/flexfilelayout/flexfilelayout.c
+7-3net/sunrpc/xprt.c
+5-0fs/nfs/pnfs.h
+3-1fs/nfs/delegation.c
+2-0include/linux/nfs_xdr.h
+59-166 files

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