Date: Wed, 15 Apr 2009 16:36:13 +0000 (UTC) From: Alexander Kabaev <kan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r191107 - in releng/7.2/sys: . contrib/pf dev/ath/ath_hal dev/cxgb kern Message-ID: <200904151636.n3FGaDF2048045@svn.freebsd.org>
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Author: kan Date: Wed Apr 15 16:36:13 2009 New Revision: 191107 URL: http://svn.freebsd.org/changeset/base/191107 Log: MFC r191081-191082: Properly handle negative cache enries found through dotdot lookups. Submitted by: tegge Approved by: re(kib) _M sys M sys/kern/vfs_cache.c _M sys/dev/cxgb _M sys/dev/ath/ath_hal _M sys/contrib/pf Modified: releng/7.2/sys/ (props changed) releng/7.2/sys/contrib/pf/ (props changed) releng/7.2/sys/dev/ath/ath_hal/ (props changed) releng/7.2/sys/dev/cxgb/ (props changed) releng/7.2/sys/kern/vfs_cache.c Modified: releng/7.2/sys/kern/vfs_cache.c ============================================================================== --- releng/7.2/sys/kern/vfs_cache.c Wed Apr 15 16:05:25 2009 (r191106) +++ releng/7.2/sys/kern/vfs_cache.c Wed Apr 15 16:36:13 2009 (r191107) @@ -370,6 +370,11 @@ retry: *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) { + ncp = dvp->v_cache_dd; + goto negative_success; + } CTR3(KTR_VFS, "cache_lookup(%p, %s) found %p via ..", dvp, cnp->cn_nameptr, *vpp); goto success; @@ -416,6 +421,7 @@ retry: goto success; } +negative_success: /* We found a negative match, and want to create it, so purge */ if (cnp->cn_nameiop == CREATE) { numnegzaps++;
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