> static inline struct iomap_page *to_iomap_page(struct page *page)
> {
> + VM_BUG_ON_PGFLAGS(PageTail(page), page);
> if (page_has_private(page))
> return (struct iomap_page *)page_private(page);
> return NULL;
Nit: can you add an empty line after the
On Wed, Aug 26, 2020 at 03:26:23AM +0100, Matthew Wilcox wrote:
> On Tue, Aug 25, 2020 at 02:02:03PM -0700, Darrick J. Wong wrote:
> > > /*
> > > - * Structure allocated for each page when block size < PAGE_SIZE to track
> > > + * Structure allocated for each page when block size < page size to
On Tue, Aug 25, 2020 at 02:02:03PM -0700, Darrick J. Wong wrote:
> > /*
> > - * Structure allocated for each page when block size < PAGE_SIZE to track
> > + * Structure allocated for each page when block size < page size to track
> > * sub-page uptodate status and I/O completions.
>
> "for
On Mon, Aug 24, 2020 at 03:55:06PM +0100, Matthew Wilcox (Oracle) wrote:
> Size the uptodate array dynamically to support larger pages in the
> page cache. With a 64kB page, we're only saving 8 bytes per page today,
> but with a 2MB maximum page size, we'd have to allocate more than 4kB
> per
On Tue, Aug 25, 2020 at 09:59:18AM +1000, Dave Chinner wrote:
> On Mon, Aug 24, 2020 at 03:55:06PM +0100, Matthew Wilcox (Oracle) wrote:
> > static inline struct iomap_page *to_iomap_page(struct page *page)
> > {
> > + VM_BUG_ON_PGFLAGS(PageTail(page), page);
> > if
On Mon, Aug 24, 2020 at 03:55:06PM +0100, Matthew Wilcox (Oracle) wrote:
> Size the uptodate array dynamically to support larger pages in the
> page cache. With a 64kB page, we're only saving 8 bytes per page today,
> but with a 2MB maximum page size, we'd have to allocate more than 4kB
> per
Size the uptodate array dynamically to support larger pages in the
page cache. With a 64kB page, we're only saving 8 bytes per page today,
but with a 2MB maximum page size, we'd have to allocate more than 4kB
per page. Add a few debugging assertions.
Signed-off-by: Matthew Wilcox (Oracle)
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