cvs commit: src/sys/nfsclient nfs.h nfs_socket.c nfs_subs.c nfsmount.h

[Mohan Srinivasan]

mohans      2007-10-12 19:18:46 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/nfsclient        nfs.h nfs_socket.c nfs_subs.c nfsmount.h 
  Log:
  MFC:
  NFS MP scaling changes.
  - Eliminate the hideous nfs_sndlock that serialized NFS/TCP request senders
    thru the sndlock.
  - Institute a new nfs_connectlock that serializes NFS/TCP reconnects. Add
    logic to wait for pending request senders to finish sending before
    reconnecting. Dial down the sb_timeo for NFS/TCP sockets to 1 sec.
  - Break out the nfs xid manipulation under a new nfs xid lock, rather than
    over loading the nfs request lock for this purpose.
  - Fix some of the locking in nfs_request.
  Many thanks to Kris Kennaway for his help with this and for initiating the
  MP scaling analysis and work. Kris also tested this patch thorougly.
  Approved by: re@ (Ken Smith)
  
  Revision   Changes    Path
  1.98.2.1   +2 -2      src/sys/nfsclient/nfs.h
  1.154.2.1  +123 -71   src/sys/nfsclient/nfs_socket.c
  1.146.2.1  +4 -2      src/sys/nfsclient/nfs_subs.c
  1.32.2.1   +2 -0      src/sys/nfsclient/nfsmount.h