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kernel: update kernel 4.4 to version 4.4.13

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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas
2016-06-12 11:49:46 +02:00
parent 1da87516e5
commit 0aa6c7df60
25 changed files with 56 additions and 312 deletions
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78
target/linux/generic/patches-4.4/101-MIPS-fix-cache-flushing-for-highmem-pages.patch
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@@ -15,87 +15,17 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/mm.h>
+#include <linux/highmem.h>
#include <asm/cacheflush.h>
#include <asm/processor.h>
@@ -78,18 +79,29 @@ SYSCALL_DEFINE3(cacheflush, unsigned lon
return 0;
}
+static void
+flush_highmem_page(struct page *page)
+{
+ void *addr = kmap_atomic(page);
+ flush_data_cache_page((unsigned long)addr);
+ kunmap_atomic(addr);
+}
+
void __flush_dcache_page(struct page *page)
{
struct address_space *mapping = page_mapping(page);
unsigned long addr;
- if (PageHighMem(page))
- return;
if (mapping && !mapping_mapped(mapping)) {
SetPageDcacheDirty(page);
return;
}
+ if (PageHighMem(page)) {
+ flush_highmem_page(page);
+ return;
+ }
+
/*
* We could delay the flush for the !page_mapping case too. But that
* case is for exec env/arg pages and those are %99 certainly going to
@@ -105,6 +117,11 @@ void __flush_anon_page(struct page *page
@@ -111,6 +111,13 @@ void __flush_anon_page(struct page *page
{
unsigned long addr = (unsigned long) page_address(page);
+ if (PageHighMem(page)) {
+ flush_highmem_page(page);
+ addr = (unsigned long)kmap_atomic(page);
+ flush_data_cache_page(addr);
+ __kunmap_atomic((void *)addr);
+ return;
+ }
+
if (pages_do_alias(addr, vmaddr)) {
if (page_mapped(page) && !Page_dcache_dirty(page)) {
void *kaddr;
@@ -123,8 +140,10 @@ void __flush_icache_page(struct vm_area_
{
unsigned long addr;
- if (PageHighMem(page))
+ if (PageHighMem(page)) {
+ flush_highmem_page(page);
return;
+ }
addr = (unsigned long) page_address(page);
flush_data_cache_page(addr);
@@ -142,12 +161,17 @@ void __update_cache(struct vm_area_struc
if (unlikely(!pfn_valid(pfn)))
return;
page = pfn_to_page(pfn);
- if (page_mapping(page) && Page_dcache_dirty(page)) {
+ if (!Page_dcache_dirty(page) || !page_mapping(page))
+ return;
+
+ if (PageHighMem(page)) {
+ flush_highmem_page(page);
+ } else {
addr = (unsigned long) page_address(page);
if (exec || pages_do_alias(addr, address & PAGE_MASK))
flush_data_cache_page(addr);
- ClearPageDcacheDirty(page);
}
+ ClearPageDcacheDirty(page);
}
unsigned long _page_cachable_default;