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Tue, 16 Apr 2019 17:54:51 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201904161754.x3GHspIg044854@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-12@freebsd.org Subject: svn commit: r346287 - stable/12/sys/fs/msdosfs X-SVN-Group: stable-12 X-SVN-Commit-Author: kib X-SVN-Commit-Paths: stable/12/sys/fs/msdosfs X-SVN-Commit-Revision: 346287 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: 4B78B70404 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:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:06:58 -0000 X-Original-Date: Tue, 16 Apr 2019 17:54:51 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:06:58 -0000 Author: kib Date: Tue Apr 16 17:54:51 2019 New Revision: 346287 URL: https://svnweb.freebsd.org/changeset/base/346287 Log: MFC r346064: Fix dirty buf exhaustion easily triggered with msdosfs. Modified: stable/12/sys/fs/msdosfs/msdosfs_fat.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/fs/msdosfs/msdosfs_fat.c ============================================================================== --- stable/12/sys/fs/msdosfs/msdosfs_fat.c Tue Apr 16 17:43:14 2019 (r346286) +++ stable/12/sys/fs/msdosfs/msdosfs_fat.c Tue Apr 16 17:54:51 2019 (r346287) @@ -54,6 +54,7 @@ #include #include #include +#include #include #include @@ -979,6 +980,7 @@ 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); + } } } }