Date: Sat, 25 Oct 2008 14:01:29 +0000 (UTC) From: Doug Rabson <dfr@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r184262 - in releng/6.4/sys: . kern Message-ID: <200810251401.m9PE1TNK034043@svn.freebsd.org>
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Author: dfr Date: Sat Oct 25 14:01:29 2008 New Revision: 184262 URL: http://svn.freebsd.org/changeset/base/184262 Log: MFC: r184227 - don't use *statep without holding the vnode interlock This change is being merged earlier than originally planned at the request of the release engineers. Approved by: re (kib) Modified: releng/6.4/sys/ (props changed) releng/6.4/sys/kern/kern_lockf.c Modified: releng/6.4/sys/kern/kern_lockf.c ============================================================================== --- releng/6.4/sys/kern/kern_lockf.c Sat Oct 25 14:01:08 2008 (r184261) +++ releng/6.4/sys/kern/kern_lockf.c Sat Oct 25 14:01:29 2008 (r184262) @@ -467,12 +467,15 @@ lf_advlockasync(struct vop_advlockasync_ /* * Avoid the common case of unlocking when inode has no locks. */ - if ((*statep) == NULL || LIST_EMPTY(&(*statep)->ls_active)) { + VI_LOCK(vp); + if ((*statep) == NULL) { if (ap->a_op != F_SETLK) { fl->l_type = F_UNLCK; + VI_UNLOCK(vp); return (0); } } + VI_UNLOCK(vp); /* * Map our arguments to an existing lock owner or create one
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