Date: Mon, 9 May 2022 21:10:12 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 4ac2df8f4cd9 - main - ffs_use_bwrite: make the superblock snapshot more consistent Message-ID: <202205092110.249LACVa028278@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=4ac2df8f4cd91017c000543224204f823008f699 commit 4ac2df8f4cd91017c000543224204f823008f699 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2022-05-08 14:00:37 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2022-05-09 20:45:27 +0000 ffs_use_bwrite: make the superblock snapshot more consistent Copy in-memory struct fs to the superblock buffer under the UFS mutex. Reviewed by: chs, markj PR: 263765 Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D35149 --- sys/ufs/ffs/ffs_vfsops.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/ufs/ffs/ffs_vfsops.c b/sys/ufs/ffs/ffs_vfsops.c index e9cbc962cd78..07ae69b1b798 100644 --- a/sys/ufs/ffs/ffs_vfsops.c +++ b/sys/ufs/ffs/ffs_vfsops.c @@ -2247,7 +2247,9 @@ ffs_use_bwrite(void *devfd, off_t loc, void *buf, int size) } if (MOUNTEDSOFTDEP(ump->um_mountp)) softdep_setup_sbupdate(ump, (struct fs *)bp->b_data, bp); + UFS_LOCK(ump); bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize); + UFS_UNLOCK(ump); fs = (struct fs *)bp->b_data; ffs_oldfscompat_write(fs, ump); fs->fs_si = NULL;
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