From owner-svn-src-stable@FreeBSD.ORG Mon Aug 18 05:17:25 2014 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 477496BF; Mon, 18 Aug 2014 05:17:25 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1836E3A9C; Mon, 18 Aug 2014 05:17:25 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id s7I5HOjL055141; Mon, 18 Aug 2014 05:17:24 GMT (envelope-from delphij@FreeBSD.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id s7I5HOWw055138; Mon, 18 Aug 2014 05:17:24 GMT (envelope-from delphij@FreeBSD.org) Message-Id: <201408180517.s7I5HOWw055138@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: delphij set sender to delphij@FreeBSD.org using -f From: Xin LI Date: Mon, 18 Aug 2014 05:17:24 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r270127 - in stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs: . sys X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Aug 2014 05:17:25 -0000 Author: delphij Date: Mon Aug 18 05:17:24 2014 New Revision: 270127 URL: http://svnweb.freebsd.org/changeset/base/270127 Log: MFC r269431: MFV r269427: In dnode_children_t, use C99's "[]" idiom for declaring the variable sized array dnc_children at the end of the structure. This prevents the compiler from mistakenly optimizing away accesses beyond the array's defined size. Illumos issue: 5038 Remove "old-style" flexible array usage in ZFS. Author: Justin T. Gibbs Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dnode.h Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c Mon Aug 18 05:13:46 2014 (r270126) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c Mon Aug 18 05:17:24 2014 (r270127) @@ -1026,7 +1026,7 @@ dnode_buf_pageout(dmu_buf_t *db, void *a dnh->dnh_dnode = NULL; } kmem_free(children_dnodes, sizeof (dnode_children_t) + - (epb - 1) * sizeof (dnode_handle_t)); + epb * sizeof (dnode_handle_t)); } /* @@ -1111,7 +1111,7 @@ dnode_hold_impl(objset_t *os, uint64_t o int i; dnode_children_t *winner; children_dnodes = kmem_zalloc(sizeof (dnode_children_t) + - (epb - 1) * sizeof (dnode_handle_t), KM_SLEEP); + epb * sizeof (dnode_handle_t), KM_SLEEP); children_dnodes->dnc_count = epb; dnh = &children_dnodes->dnc_children[0]; for (i = 0; i < epb; i++) { @@ -1126,7 +1126,7 @@ dnode_hold_impl(objset_t *os, uint64_t o } kmem_free(children_dnodes, sizeof (dnode_children_t) + - (epb - 1) * sizeof (dnode_handle_t)); + epb * sizeof (dnode_handle_t)); children_dnodes = winner; } } Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dnode.h ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dnode.h Mon Aug 18 05:13:46 2014 (r270126) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dnode.h Mon Aug 18 05:17:24 2014 (r270127) @@ -245,7 +245,7 @@ typedef struct dnode_handle { typedef struct dnode_children { size_t dnc_count; /* number of children */ - dnode_handle_t dnc_children[1]; /* sized dynamically */ + dnode_handle_t dnc_children[]; /* sized dynamically */ } dnode_children_t; typedef struct free_range {