Date: Fri, 21 Dec 2012 19:28:18 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r244551 - head/sys/dev/cxgbe Message-ID: <201212211928.qBLJSIJ1022156@svn.freebsd.org>
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Author: np Date: Fri Dec 21 19:28:17 2012 New Revision: 244551 URL: http://svnweb.freebsd.org/changeset/base/244551 Log: cxgbe(4): must hold a write-lock on the table while allocating an L2 entry for switching. MFC after: 3 days Modified: head/sys/dev/cxgbe/t4_l2t.c Modified: head/sys/dev/cxgbe/t4_l2t.c ============================================================================== --- head/sys/dev/cxgbe/t4_l2t.c Fri Dec 21 19:26:17 2012 (r244550) +++ head/sys/dev/cxgbe/t4_l2t.c Fri Dec 21 19:28:17 2012 (r244551) @@ -149,7 +149,7 @@ t4_l2t_alloc_switching(struct l2t_data * { struct l2t_entry *e; - rw_rlock(&d->lock); + rw_wlock(&d->lock); e = t4_alloc_l2e(d); if (e) { mtx_lock(&e->lock); /* avoid race with t4_l2t_free */ @@ -157,7 +157,7 @@ t4_l2t_alloc_switching(struct l2t_data * atomic_store_rel_int(&e->refcnt, 1); mtx_unlock(&e->lock); } - rw_runlock(&d->lock); + rw_wunlock(&d->lock); return e; }
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