From owner-svn-src-stable-11@freebsd.org Tue Sep 3 14:06:58 2019 Return-Path: Delivered-To: svn-src-stable-11@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 82FB0DD255; Tue, 3 Sep 2019 14:06:58 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (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 "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46N8016jG1z4Q5X; Tue, 3 Sep 2019 14:06:57 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 1452) id 6BB5B1AE4D; Tue, 3 Sep 2019 14:06:23 +0000 (UTC) X-Original-To: yuripv@localmail.freebsd.org Delivered-To: yuripv@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id 10B04E84; 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Tue, 16 Apr 2019 17:56:53 +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 8965123177; Tue, 16 Apr 2019 17:56:53 +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 x3GHurpV045078; Tue, 16 Apr 2019 17:56:53 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x3GHurUA045077; Tue, 16 Apr 2019 17:56:53 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201904161756.x3GHurUA045077@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r346289 - stable/11/sys/fs/msdosfs X-SVN-Group: stable-11 X-SVN-Commit-Author: kib X-SVN-Commit-Paths: stable/11/sys/fs/msdosfs X-SVN-Commit-Revision: 346289 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 58773706DF X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.98)[-0.982,0]; ASN(0.00)[asn:11403, ipnet:96.47.64.0/20, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-stable-11@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for only the 11-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:06:59 -0000 X-Original-Date: Tue, 16 Apr 2019 17:56:53 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:06:59 -0000 Author: kib Date: Tue Apr 16 17:56:53 2019 New Revision: 346289 URL: https://svnweb.freebsd.org/changeset/base/346289 Log: MFC r346064: Fix dirty buf exhaustion easily triggered with msdosfs. Modified: stable/11/sys/fs/msdosfs/msdosfs_fat.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/fs/msdosfs/msdosfs_fat.c ============================================================================== --- stable/11/sys/fs/msdosfs/msdosfs_fat.c Tue Apr 16 17:55:54 2019 (r346288) +++ stable/11/sys/fs/msdosfs/msdosfs_fat.c Tue Apr 16 17:56:53 2019 (r346289) @@ -52,6 +52,7 @@ #include #include #include +#include #include #include @@ -977,6 +978,7 @@ extendfile(struct denode *dep, u_long count, struct bu u_long cn, got; struct msdosfsmount *pmp = dep->de_pmp; struct buf *bp; + struct vop_fsync_args fsync_ap; daddr_t blkno; /* @@ -1086,8 +1088,16 @@ extendfile(struct denode *dep, u_long count, struct bu if (bpp) { *bpp = bp; bpp = NULL; - } else + } else { bdwrite(bp); + } + if (vm_page_count_severe() || + buf_dirty_count_severe()) { + fsync_ap.a_vp = DETOV(dep); + fsync_ap.a_waitfor = MNT_WAIT; + fsync_ap.a_td = curthread; + vop_stdfsync(&fsync_ap); + } } } }