[PATCH v2 01/16] mm: Add AOP_UPDATED_PAGE return value

[Matthew Wilcox]

On Thu, Oct 15, 2020 at 10:06:51AM +0100, Christoph Hellwig wrote:
> Don't we also need to handle the new return value in a few other places
> like cachefiles_read_reissue swap_readpage?  Maybe those don't get
> called on the currently converted instances, but just leaving them
> without handling AOP_UPDATED_PAGE seems like a time bomb.

Er, right.  And nobh_truncate_page(), and read_page().  And then I
noticed the bug in cachefiles_read_reissue().  Sigh.

Updated patch series coming soon.