From owner-cvs-all  Sun May 13 22:26:53 2001
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From: Seigo Tanimura <tanimura@FreeBSD.org>
Date: Sun, 13 May 2001 22:26:50 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern sys_generic.c src/sys/netncp ncp_sock.c
         src/sys/netsmb smb_trantcp.c src/sys/sys systm.h
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tanimura    2001/05/13 22:26:50 PDT

  Modified files:
    sys/kern             sys_generic.c 
    sys/netncp           ncp_sock.c 
    sys/netsmb           smb_trantcp.c 
    sys/sys              systm.h 
  Log:
  - Convert msleep(9) in select(2) and poll(2) to cv_*wait*(9).
  
  - Since polling should not involve sleeping, keep holding a
    process lock upon scanning file descriptors.
  
  - Hold a reference to every file descriptor prior to entering
    polling loop in order to avoid lock order reversal between
    lockmgr and p_mtx upon calling fdrop() in fo_poll().
    (NOTE: this work has not been done for netncp and netsmb
    yet because a socket itself has no reference counts.)
  
  Reviewed by:	jhb
  
  Revision  Changes    Path
  1.78      +132 -41   src/sys/kern/sys_generic.c
  1.5       +14 -10    src/sys/netncp/ncp_sock.c
  1.2       +14 -10    src/sys/netsmb/smb_trantcp.c
  1.140     +2 -2      src/sys/sys/systm.h


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