Date: Wed, 8 Apr 2009 04:30:16 +0000 (UTC) From: Stephen McKay <mckay@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: r190837 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb kern Message-ID: <200904080430.n384UGWw043589@svn.freebsd.org>
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Author: mckay Date: Wed Apr 8 04:30:16 2009 New Revision: 190837 URL: http://svn.freebsd.org/changeset/base/190837 Log: MFC r187460: Add a limit on namecache entries. 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 8 03:53:20 2009 (r190836) +++ stable/7/sys/kern/vfs_cache.c Wed Apr 8 04:30:16 2009 (r190837) @@ -495,6 +495,12 @@ cache_enter(dvp, vp, cnp) if (!doingcache) return; + /* + * Avoid blowout in namecache entries. + */ + if (numcache >= desiredvnodes * 2) + return; + if (cnp->cn_nameptr[0] == '.') { if (cnp->cn_namelen == 1) { return;
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