On Thu, Jul 30, 2020 at 04:19:34AM +0100, Matthew Wilcox wrote:
> On Thu, Jul 30, 2020 at 09:19:01AM +0800, Yu Kuai wrote:
> > +++ b/fs/iomap/buffered-io.c
> > @@ -29,7 +29,9 @@ struct iomap_page {
> > atomic_tread_count;
> > atomic_twrite_count;
> >
On 2020/7/30 11:19, Matthew Wilcox wrote:
Maybe let the discussion on removing the ->uptodate array finish
before posting another patch for review?
Hi, Matthew!
Of course, I missed the discussion thread before sending this path.
And thanks for your suggestions.
Best regards,
Yu Kuai
On Thu, Jul 30, 2020 at 09:19:01AM +0800, Yu Kuai wrote:
> +++ b/fs/iomap/buffered-io.c
> @@ -29,7 +29,9 @@ struct iomap_page {
> atomic_tread_count;
> atomic_twrite_count;
> spinlock_t uptodate_lock;
> + spinlock_t
On 2020/7/30 10:27, Gao Xiang wrote:
Hi Kuai,
On Thu, Jul 30, 2020 at 09:19:01AM +0800, Yu Kuai wrote:
commit 9dc55f1389f9 ("iomap: add support for sub-pagesize buffered I/O
without buffer heads") replace the per-block structure buffer_head with
the per-page structure iomap_page. However,
Hi Kuai,
On Thu, Jul 30, 2020 at 09:19:01AM +0800, Yu Kuai wrote:
> commit 9dc55f1389f9 ("iomap: add support for sub-pagesize buffered I/O
> without buffer heads") replace the per-block structure buffer_head with
> the per-page structure iomap_page. However, iomap_page can't track the
> dirty
commit 9dc55f1389f9 ("iomap: add support for sub-pagesize buffered I/O
without buffer heads") replace the per-block structure buffer_head with
the per-page structure iomap_page. However, iomap_page can't track the
dirty state of sub pages, which will cause performance issue since sub
pages will be
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