From owner-svn-src-head@freebsd.org Fri Dec 21 20:12:44 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C52EA1355818; Fri, 21 Dec 2018 20:12:44 +0000 (UTC) (envelope-from bde@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) server-signature RSA-PSS (4096 bits) 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 67FB082061; Fri, 21 Dec 2018 20:12:44 +0000 (UTC) (envelope-from bde@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 5B6E91A663; Fri, 21 Dec 2018 20:12:44 +0000 (UTC) (envelope-from bde@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wBLKCii9002372; Fri, 21 Dec 2018 20:12:44 GMT (envelope-from bde@FreeBSD.org) Received: (from bde@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wBLKCiNc002371; Fri, 21 Dec 2018 20:12:44 GMT (envelope-from bde@FreeBSD.org) Message-Id: <201812212012.wBLKCiNc002371@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bde set sender to bde@FreeBSD.org using -f From: Bruce Evans Date: Fri, 21 Dec 2018 20:12:44 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342353 - head/sys/fs/msdosfs X-SVN-Group: head X-SVN-Commit-Author: bde X-SVN-Commit-Paths: head/sys/fs/msdosfs X-SVN-Commit-Revision: 342353 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 67FB082061 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.96)[-0.962,0]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Dec 2018 20:12:44 -0000 Author: bde Date: Fri Dec 21 20:12:43 2018 New Revision: 342353 URL: https://svnweb.freebsd.org/changeset/base/342353 Log: Quick fix for initialization of mnt_iosize_max. (This limit controls mainly clustering and read-ahead.) Copy the initialization from ffs, and also copy a couple of lines of ffs's nearby style for initialization order and whitespace. A correct fix would de-duplicate the initialization and fix bitrot in it instead of adding another instance of the duplication. Complications to use the size preferred by the device have been reduced to hard-coding slightly pessimal and/or inconsistent defaults, using large code that was almost needed to support the complications. For msdosfs, the result was that mnt_iosize_max was DFTLPHYS (64K) but is now MAXPHYS (128K). Modified: head/sys/fs/msdosfs/msdosfs_vfsops.c Modified: head/sys/fs/msdosfs/msdosfs_vfsops.c ============================================================================== --- head/sys/fs/msdosfs/msdosfs_vfsops.c Fri Dec 21 17:26:22 2018 (r342352) +++ head/sys/fs/msdosfs/msdosfs_vfsops.c Fri Dec 21 20:12:43 2018 (r342353) @@ -418,9 +418,12 @@ mountmsdosfs(struct vnode *devvp, struct mount *mp) return (error); } dev_ref(dev); - VOP_UNLOCK(devvp, 0); - bo = &devvp->v_bufobj; + VOP_UNLOCK(devvp, 0); + if (dev->si_iosize_max != 0) + mp->mnt_iosize_max = dev->si_iosize_max; + if (mp->mnt_iosize_max > MAXPHYS) + mp->mnt_iosize_max = MAXPHYS; /* * Read the boot sector of the filesystem, and then check the