From owner-svn-src-stable@freebsd.org Mon Dec 7 01:05:40 2020 Return-Path: Delivered-To: svn-src-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 548AB472D05; Mon, 7 Dec 2020 01:05:40 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Cq4qm20TSz3PTN; Mon, 7 Dec 2020 01:05:40 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 332BC19A22; Mon, 7 Dec 2020 01:05:40 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0B715eUN019852; Mon, 7 Dec 2020 01:05:40 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0B715eq3019851; Mon, 7 Dec 2020 01:05:40 GMT (envelope-from kib@FreeBSD.org) Message-Id: <202012070105.0B715eq3019851@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Mon, 7 Dec 2020 01:05:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r368402 - stable/12/sys/ufs/ffs X-SVN-Group: stable-12 X-SVN-Commit-Author: kib X-SVN-Commit-Paths: stable/12/sys/ufs/ffs X-SVN-Commit-Revision: 368402 X-SVN-Commit-Repository: base 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: 2.1.34 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, 07 Dec 2020 01:05:40 -0000 Author: kib Date: Mon Dec 7 01:05:39 2020 New Revision: 368402 URL: https://svnweb.freebsd.org/changeset/base/368402 Log: MFC r368191: ffs: do not read full direct blocks if they are going to be overwritten. Modified: stable/12/sys/ufs/ffs/ffs_balloc.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/ufs/ffs/ffs_balloc.c ============================================================================== --- stable/12/sys/ufs/ffs/ffs_balloc.c Mon Dec 7 01:02:20 2020 (r368401) +++ stable/12/sys/ufs/ffs/ffs_balloc.c Mon Dec 7 01:05:39 2020 (r368402) @@ -172,10 +172,17 @@ ffs_balloc_ufs1(struct vnode *vp, off_t startoffset, i panic("ffs_balloc_ufs1: BA_METAONLY for direct block"); nb = dp->di_db[lbn]; if (nb != 0 && ip->i_size >= smalllblktosize(fs, lbn + 1)) { - error = bread(vp, lbn, fs->fs_bsize, NOCRED, &bp); - if (error) { - brelse(bp); - return (error); + if ((flags & BA_CLRBUF) != 0) { + error = bread(vp, lbn, fs->fs_bsize, NOCRED, + &bp); + if (error != 0) + return (error); + } else { + bp = getblk(vp, lbn, fs->fs_bsize, 0, 0, + gbflags); + if (bp == NULL) + return (EIO); + vfs_bio_clrbuf(bp); } bp->b_blkno = fsbtodb(fs, nb); *bpp = bp; @@ -770,11 +777,17 @@ ffs_balloc_ufs2(struct vnode *vp, off_t startoffset, i panic("ffs_balloc_ufs2: BA_METAONLY for direct block"); nb = dp->di_db[lbn]; if (nb != 0 && ip->i_size >= smalllblktosize(fs, lbn + 1)) { - error = bread_gb(vp, lbn, fs->fs_bsize, NOCRED, - gbflags, &bp); - if (error) { - brelse(bp); - return (error); + if ((flags & BA_CLRBUF) != 0) { + error = bread_gb(vp, lbn, fs->fs_bsize, NOCRED, + gbflags, &bp); + if (error != 0) + return (error); + } else { + bp = getblk(vp, lbn, fs->fs_bsize, 0, 0, + gbflags); + if (bp == NULL) + return (EIO); + vfs_bio_clrbuf(bp); } bp->b_blkno = fsbtodb(fs, nb); *bpp = bp;