On Sun, Oct 18, 2020 at 10:25:57AM -0400, Theodore Y. Ts'o wrote:

On Fri, Oct 16, 2020 at 05:04:37PM +0100, Matthew Wilcox (Oracle) wrote:

quoted

The error returned from ext4_map_blocks() was being discarded, leading
to the generic -EIO being returned to userspace.  Now ext4 can return
more precise errors.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

This change is independent of the synchronous readpage changes,
correct?  Or am I missing something?

It's a step along the way.  If you want to queue it up independently of
the other changes, I see no problem with that.  The requirement to make
a synchronous ->readpage killable is making the conversion quite thorny
and I'm not sure I'm going to get it done this merge window.