On Fri, Dec 16, 2022 at 04:06:24PM +0100, Andreas Gruenbacher wrote:
> Change the iomap ->page_prepare() handler to get and return a locked
> folio instead of doing that in iomap_write_begin(). This allows to
> recover from out-of-memory situations in ->page_prepare(), which
> eliminates the corre
On Fri, Dec 16, 2022 at 5:30 PM Matthew Wilcox wrote:
> On Fri, Dec 16, 2022 at 04:06:24PM +0100, Andreas Gruenbacher wrote:
> > + if (page_ops && page_ops->page_prepare)
> > + folio = page_ops->page_prepare(iter, pos, len);
> > + else
> > + folio = iomap_folio_prep
On Fri, Dec 16, 2022 at 04:06:24PM +0100, Andreas Gruenbacher wrote:
> + if (page_ops && page_ops->page_prepare)
> + folio = page_ops->page_prepare(iter, pos, len);
> + else
> + folio = iomap_folio_prepare(iter, pos);
> + if (IS_ERR_OR_NULL(folio)) {
> +
Change the iomap ->page_prepare() handler to get and return a locked
folio instead of doing that in iomap_write_begin(). This allows to
recover from out-of-memory situations in ->page_prepare(), which
eliminates the corresponding error handling code in iomap_write_begin().
The ->page_done() handle
