X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=module%2Fzfs%2Fzfs_vfsops.c;h=1e8e6af9ab06f55a670c4f0b40a0951d10630add;hb=03f9ba9d990efb911026ebee0902671915db01a3;hp=028638d5c85e978e16e4d554dee1a505802a222e;hpb=05ff35c602827a0f03659ec974c67b3fb5bf1c0b;p=zfs.git

diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c
index 028638d..1e8e6af 100644
--- a/module/zfs/zfs_vfsops.c
+++ b/module/zfs/zfs_vfsops.c
@@ -69,8 +69,10 @@
 
 /*ARGSUSED*/
 int
-zfs_sync(zfs_sb_t *zsb, short flag, cred_t *cr)
+zfs_sync(struct super_block *sb, int wait, cred_t *cr)
 {
+	zfs_sb_t *zsb = sb->s_fs_info;
+
 	/*
 	 * Data integrity is job one.  We don't want a compromised kernel
 	 * writing to the storage pool, so we never sync during panic.
@@ -78,6 +80,13 @@ zfs_sync(zfs_sb_t *zsb, short flag, cred_t *cr)
 	if (unlikely(oops_in_progress))
 		return (0);
 
+	/*
+	 * Semantically, the only requirement is that the sync be initiated.
+	 * The DMU syncs out txgs frequently, so there's nothing to do.
+	 */
+	if (!wait)
+		return (0);
+
 	if (zsb != NULL) {
 		/*
 		 * Sync a specific filesystem.
@@ -87,19 +96,14 @@ zfs_sync(zfs_sb_t *zsb, short flag, cred_t *cr)
 		ZFS_ENTER(zsb);
 		dp = dmu_objset_pool(zsb->z_os);
 
-#ifdef HAVE_SHUTDOWN
 		/*
 		 * If the system is shutting down, then skip any
 		 * filesystems which may exist on a suspended pool.
-		 *
-		 * XXX: This can be implemented using the Linux reboot
-		 *      notifiers: {un}register_reboot_notifier().
 		 */
-		if (sys_shutdown && spa_suspended(dp->dp_spa)) {
+		if (spa_suspended(dp->dp_spa)) {
 			ZFS_EXIT(zsb);
 			return (0);
 		}
-#endif /* HAVE_SHUTDOWN */
 
 		if (zsb->z_log != NULL)
 			zil_commit(zsb->z_log, 0);
@@ -1029,7 +1033,7 @@ zfs_statvfs(struct dentry *dentry, struct kstatfs *statp)
 	 */
 	statp->f_ffree = MIN(availobjs, statp->f_bfree);
 	statp->f_files = statp->f_ffree + usedobjs;
-	statp->f_fsid.val[0] = 0; /* XXX: Map up some unique ID */
+	statp->f_fsid.val[0] = dentry->d_sb->s_dev;
 	statp->f_fsid.val[1] = 0;
 	statp->f_type = ZFS_SUPER_MAGIC;
 	statp->f_namelen = ZFS_MAXNAMELEN;