Re: [PATCH 16/16] mm: pass get_user_pages_fast iterator arguments in a structure
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2019-06-12 00:55:54
Also in:
linux-mips, linux-mm, linux-sh, lkml, sparclinux
Christoph Hellwig's on June 12, 2019 12:41 am:
Instead of passing a set of always repeated arguments down the get_user_pages_fast iterators, create a struct gup_args to hold them and pass that by reference. This leads to an over 100 byte .text size reduction for x86-64.
What does this do for performance? I've found this pattern can be bad for store aliasing detection. Thanks, Nick