Date: Tue, 14 Apr 2009 23:46:58 +0000 (UTC) From: Alexander Kabaev <kan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r191081 - head/sys/kern Message-ID: <200904142346.n3ENkwuK023749@svn.freebsd.org>
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Author: kan Date: Tue Apr 14 23:46:57 2009 New Revision: 191081 URL: http://svn.freebsd.org/changeset/base/191081 Log: Fix yet another negative dotodot entry fallout. Reported by: pho Modified: head/sys/kern/vfs_cache.c Modified: head/sys/kern/vfs_cache.c ============================================================================== --- head/sys/kern/vfs_cache.c Tue Apr 14 23:05:36 2009 (r191080) +++ head/sys/kern/vfs_cache.c Tue Apr 14 23:46:57 2009 (r191081) @@ -421,6 +421,18 @@ retry_wlocked: *vpp = dvp->v_cache_dd->nc_vp; else *vpp = dvp->v_cache_dd->nc_dvp; + /* Return failure if negative entry was found. */ + if (*vpp == NULL) { + numneghits++; + nchstats.ncs_neghits++; + SDT_PROBE(vfs, namecache, lookup, hit_negative, + dvp, "..", 0, 0, 0); + if (wlocked) + CACHE_WUNLOCK(); + else + CACHE_RUNLOCK(); + return (ENOENT); + } CTR3(KTR_VFS, "cache_lookup(%p, %s) found %p via ..", dvp, cnp->cn_nameptr, *vpp); SDT_PROBE(vfs, namecache, lookup, hit, dvp, "..",
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