ARM: ZERO_PAGE: Avoid flush_dcache_page() for zero page
authorRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 25 Oct 2009 10:23:04 +0000 (10:23 +0000)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Tue, 1 Dec 2009 18:20:07 +0000 (18:20 +0000)
commit421fe93cc4b06b2f5e875cbe0f692800d4862ee5
tree88c5985799273a7c854159246d715e1ad85646f9
parentb7dc0b2cfc6e9bc7270915c642a8a8e999b6095e
ARM: ZERO_PAGE: Avoid flush_dcache_page() for zero page

The zero page is read-only, and has its cache state cleared during
boot.  No further maintanence for this page is required.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/mm/fault-armv.c
arch/arm/mm/flush.c
arch/arm/mm/mmu.c