> + if (gfs2_is_stuffed(ip)) {
> + unstuff = pos + length > gfs2_max_stuffed_size(ip);
> +
> + if (!unstuff) {
> + iomap->page = grab_cache_page_write_begin(
> + inode->i_mapping, 0, flags);
> + ret = -ENOMEM;
> + if (!iomap->page)
> + goto out;
> +
> + if (!PageUptodate(iomap->page)) {
> + ret = stuffed_readpage(ip, iomap->page);
> + if (ret)
> + goto out;
> + }
> + }
> + }
grab_cache_page_write_begin needs to remain in iomap. Please just
set up a pointer for later copying here.
This will be important to support e.g. iomap_readpage(s) and to easily
support direct I/O from inline data (just copy to/from the stuffed
data pointer in iomap).
