Date: Sat, 29 Jan 2000 07:23:00 -0800 (PST) From: Robert Watson <rwatson@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern vfs_subr.c Message-ID: <200001291523.HAA79231@freefall.freebsd.org>
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rwatson 2000/01/29 07:23:00 PST
Modified files:
sys/kern vfs_subr.c
Log:
This patch fixes a locking bug that can result in deadlock if
the codepath is followed.
From the PR:
vclean calls vrele leading to deadlock (if usecount > 0)
vclean() calls vrele() if v_usecount of the node was higher than one.
But before calling it, it sets the VXLOCK flag, which will make
vn_lock called from vrele dead-lock.
PR: kern/15117
Submitted by: Assar Westerlund <assar@stacken.kth.se>
Reviewed by: rwatson
Obtained from: NetBSD
Revision Changes Path
1.246 +18 -3 src/sys/kern/vfs_subr.c
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