Re: [PATCH v3 03/23] filemap: Convert __filemap_fdatawait_range() to use filemap_get_folios_tag()

[Matthew Wilcox]

On Mon, Oct 17, 2022 at 01:24:31PM -0700, Vishal Moola (Oracle) wrote:
> Converted function to use folios. This is in preparation for the removal
> of find_get_pages_range_tag().

Yes, it is, but this patch also has some nice advantages of its own:

 - Removes a call to wait_on_page_writeback(), which removes a call
   to compound_head()
 - Removes a call to ClearPageError(), which removes another call
   to compound_head()
 - Removes a call to pagevec_release(), which will eventually
   remove a third call to compound_head() (it doesn't today, but
   one day ...)

So you can definitely say that it removes 50 bytes of text and two
calls to compound_head().  And that way, this patch justifies its
existance by itself ;-)

> Signed-off-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>

Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>