From 5b167c123b3c3582f62cf1896465019bc40fe526 Mon Sep 17 00:00:00 2001 From: Kamal Dasu Date: Fri, 14 Jun 2013 17:10:03 +0000 Subject: [PATCH] MIPS: Fix get_user_page_fast() for mips with cache alias get_user_pages_fast() is missing cache flushes for MIPS platforms with cache aliases. Filesystem failures observed with DirectIO operations due to missing flush_anon_page() that use page coloring logic to work with cache aliases. This fix falls through to take slow_irqon path that calls get_user_pages() that has required logic for platforms where cpu_has_dc_aliases is true. [ralf@linux-mips.org: Explicity include .] Signed-off-by: Kamal Dasu Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/5469/ Signed-off-by: Ralf Baechle --- arch/mips/mm/gup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c index d4ea5c9c4a93..06ce17c2a905 100644 --- a/arch/mips/mm/gup.c +++ b/arch/mips/mm/gup.c @@ -12,6 +12,7 @@ #include #include +#include #include static inline pte_t gup_get_pte(pte_t *ptep) @@ -273,7 +274,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len; - if (end < start) + if (end < start || cpu_has_dc_aliases) goto slow_irqon; /* XXX: batch / limit 'nr' */ -- 2.39.5