Date: Wed, 15 Apr 2009 16:05:25 +0000 (UTC) From: Alexander Kabaev <kan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r191106 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb kern Message-ID: <200904151605.n3FG5Per047364@svn.freebsd.org>
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Author: kan Date: Wed Apr 15 16:05:25 2009 New Revision: 191106 URL: http://svn.freebsd.org/changeset/base/191106 Log: MFC r191081-191082: Properly handle negative cache enries found through dotdot lookups. Submitted by: tor Approved by: re(kib) Modified: stable/7/sys/ (props changed) stable/7/sys/contrib/pf/ (props changed) stable/7/sys/dev/ath/ath_hal/ (props changed) stable/7/sys/dev/cxgb/ (props changed) stable/7/sys/kern/vfs_cache.c Modified: stable/7/sys/kern/vfs_cache.c ============================================================================== --- stable/7/sys/kern/vfs_cache.c Wed Apr 15 15:02:37 2009 (r191105) +++ stable/7/sys/kern/vfs_cache.c Wed Apr 15 16:05:25 2009 (r191106) @@ -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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