Date: Sun, 13 May 2001 22:26:50 -0700 (PDT) From: Seigo Tanimura <tanimura@FreeBSD.org> 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 Message-ID: <200105140526.f4E5Qo547008@freefall.freebsd.org>
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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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