split->bdev = em->bdev;
split->flags = flags;
+ split->compress_type = em->compress_type;
ret = add_extent_mapping(em_tree, split);
BUG_ON(ret);
free_extent_map(split);
split->len = em->start + em->len - (start + len);
split->bdev = em->bdev;
split->flags = flags;
+ split->compress_type = em->compress_type;
if (compressed) {
split->block_len = em->block_len;
if (err)
goto out;
+ /*
+ * If BTRFS flips readonly due to some impossible error
+ * (fs_info->fs_state now has BTRFS_SUPER_FLAG_ERROR),
+ * although we have opened a file as writable, we have
+ * to stop this write operation to ensure FS consistency.
+ */
+ if (root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
+ err = -EROFS;
+ goto out;
+ }
+
file_update_time(file);
BTRFS_I(inode)->sequence++;