Re: [PATCH v14 088/138] mm/filemap: Add filemap_get_folio

On Tue, Aug 10, 2021 at 11:05:33PM +0100, David Howells wrote:

Matthew Wilcox (Oracle) [off-list ref] wrote:

quoted

filemap_get_folio() is a replacement for find_get_page().
Turn pagecache_get_page() into a wrapper around __filemap_get_folio().
Remove find_lock_head() as this use case is now covered by
filemap_get_folio().

Reduces overall kernel size by 209 bytes.  __filemap_get_folio() is
316 bytes shorter than pagecache_get_page() was, but the new
pagecache_get_page() is 99 bytes

longer, one presumes.

In total -- the old pagecache_get_page() turns into
__filemap_get_folio(), but the wrapper is 99 bytes in size.

Added the word "wrapper" to make this clearer.