Date: Tue, 12 Sep 2017 06:04:50 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r323481 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201709120604.v8C64opD052642@repo.freebsd.org>
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Author: avg Date: Tue Sep 12 06:04:50 2017 New Revision: 323481 URL: https://svnweb.freebsd.org/changeset/base/323481 Log: zfsvfs_hold: assert that the busied filesystem can not be unmounted This is a FreeBSD specific feature. MFC after: 3 weeks Sponsored by: Panzura Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Tue Sep 12 06:04:01 2017 (r323480) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Tue Sep 12 06:04:50 2017 (r323481) @@ -1488,6 +1488,7 @@ zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zf if (error == 0) { rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER : RW_READER, tag); +#ifdef illumos if ((*zfvp)->z_unmounted) { /* * XXX we could probably try again, since the unmounting @@ -1497,6 +1498,13 @@ zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zf rrm_exit(&(*zfvp)->z_teardown_lock, tag); return (SET_ERROR(EBUSY)); } +#else + /* + * vfs_busy() ensures that the filesystem is not and + * can not be unmounted. + */ + ASSERT(!(*zfvp)->z_unmounted); +#endif } return (error); }
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