yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, "yaffs_sync_object");
yaffs_gross_lock(dev);
- yaffs_flush_file(obj, 1, datasync);
+ yaffs_flush_file(obj, 1, datasync, 0);
yaffs_gross_unlock(dev);
return 0;
}
yaffs_gross_lock(dev);
- yaffs_flush_file(obj, 1, 0);
+ yaffs_flush_file(obj, 1, 0, 0);
yaffs_gross_unlock(dev);
if (obj) {
yaffs_trace(YAFFS_TRACE_OS,
"flushing obj %d", obj->obj_id);
- yaffs_flush_file(obj, 1, 0);
+ yaffs_flush_file(obj, 1, 0, 0);
}
}
}
yaffs_flush_inodes(sb);
yaffs_update_dirty_dirs(dev);
- yaffs_flush_whole_cache(dev);
+ yaffs_flush_whole_cache(dev, 1);
if (do_checkpoint)
yaffs_checkpoint_save(dev);
}
kfree(dev);
-
-
if (mtd && mtd->sync)
mtd->sync(mtd);
put_mtd_device(mtd);
}
+/* the function only is used to change dev->read_only when this file system
+ * is remounted.
+ */
+static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
+{
+ int read_only = 0;
+ struct mtd_info *mtd;
+ struct yaffs_dev *dev = 0;
+
+ /* Get the device */
+ mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
+ if (!mtd) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "MTD device #%u doesn't appear to exist",
+ MINOR(sb->s_dev));
+ return 1;
+ }
+
+ /* Check it's NAND */
+ if (mtd->type != MTD_NANDFLASH) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "MTD device is not NAND it's type %d",
+ mtd->type);
+ return 1;
+ }
+
+ read_only = ((*flags & MS_RDONLY) != 0);
+ if (!read_only && !(mtd->flags & MTD_WRITEABLE)) {
+ read_only = 1;
+ printk(KERN_INFO
+ "yaffs: mtd is read only, setting superblock read only");
+ *flags |= MS_RDONLY;
+ }
+
+ dev = sb->s_fs_info;
+ dev->read_only = read_only;
+
+ return 0;
+}
+
+
static const struct super_operations yaffs_super_ops = {
.statfs = yaffs_statfs,
.put_super = yaffs_put_super,
.evict_inode = yaffs_evict_inode,
.sync_fs = yaffs_sync_fs,
.write_super = yaffs_write_super,
+ .remount_fs = yaffs_remount_fs,
};
static struct super_block *yaffs_internal_read_super(int yaffs_version,