1. 17 Oct, 2007 1 commit
    • David Howells's avatar
      KEYS: Make request_key() and co fundamentally asynchronous · 76181c13
      David Howells authored
      Make request_key() and co fundamentally asynchronous to make it easier for
      NFS to make use of them.  There are now accessor functions that do
      asynchronous constructions, a wait function to wait for construction to
      complete, and a completion function for the key type to indicate completion
      of construction.
      
      Note that the construction queue is now gone.  Instead, keys under
      construction are linked in to the appropriate keyring in advance, and that
      anyone encountering one must wait for it to be complete before they can use
      it.  This is done automatically for userspace.
      
      The following auxiliary changes are also made:
      
       (1) Key type implementation stuff is split from linux/key.h into
           linux/key-type.h.
      
       (2) AF_RXRPC provides a way to allocate null rxrpc-type keys so that AFS does
           not need to call key_instantiate_and_link() directly.
      
       (3) Adjust the debugging macros so that they're -Wformat checked even if
           they are disabled, and make it so they can be enabled simply by defining
           __KDEBUG to be consistent with other code of mine.
      
       (3) Documentation.
      
      [alan@lxorguk.ukuu.org.uk: keys: missing word in documentation]
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      76181c13