Re: [PATCH v6 18/27] mm/filemap: Add lock_folio_killable

Looks good, Reviewed-by: Christoph Hellwig

[PATCH v6 18/27] mm/filemap: Add lock_folio_killable

This is like lock_page_killable() but for use by callers who know they have a folio. Convert __lock_page_killable() to be __lock_folio_killable(). This saves one call to compound_head() per contended call to lock_page_killable(). __lock_folio_killable() is 20 bytes smaller than