kernel_optimize_test/arch/sh
Stas Sergeev caac7e6d00 sh: get_user_pages_fast() must flush cache
This patch avoids fuse hangs on sh4 by flushing the cache on
get_user_pages_fast().  This is not necessary a good thing to do, but
get_user_pages() does this, so get_user_pages_fast() should too.

Please note the patch for mips arch that addresses the similar problem:
  https://kernel.googlesource.com/pub/scm/linux/kernel/git/ralf/linux/+/linux-3.4.50%5E!/#F0

They basically simply disable get_user_pages_fast() at all, using a
fall-back to get_user_pages().  But my fix is different, it adds an
explicit cache flushes.

Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-10 15:42:12 -07:00
..
boards
boot
cchips
configs
drivers
include
kernel
lib
lib64
math-emu
mm sh: get_user_pages_fast() must flush cache 2014-09-10 15:42:12 -07:00
oprofile
tools
Kconfig kexec: remove CONFIG_KEXEC dependency on crypto 2014-08-29 16:28:16 -07:00
Kconfig.cpu
Kconfig.debug
Makefile