Re: [PATCH v2 17/25] iomap: Support large pages in write paths

Christoph Hellwig
2020-02-12T08:17:44Z

On Tue, Feb 11, 2020 at 08:18:37PM -0800, Matthew Wilcox wrote:
> Also simplify the logic in iomap_do_writepage() for determining end of
> file.

> * ---------------------------------^------------------|
> */
> offset = i_size_read(inode);
> - end_index = offset >> PAGE_SHIFT;
> - if (page->index < end_index)
> - end_offset = (loff_t)(page->index + 1) << PAGE_SHIFT;
> - else {
> + end_offset = file_offset_of_next_page(page);
> +
> + if (end_offset > offset) {

Nit: can you drop the empty line here? Maybe it is just a pet peeve
of mine, but I hate empty line between a variable assignment, and a
use that is directly related to it.

Also it might be worth to preload this as a separate patch as it
is a very nice but not completely obvious cleanup that deserves to
stand out.