commit a2d25a5391ca219f196f9fee7b535c40d201c6bf
author Vladimir Murzin <vladimir.murzin@arm.com> Mon Dec 01 10:53:08 2014 +0000
committer Will Deacon <will.deacon@arm.com> Mon Dec 01 13:31:12 2014 +0000
tree 4b2e208ebac21cf53793db6ba4ed5a74b04a6d59
parent a1ae65b219416a72c15577bd4c8c11174fffbb8b

arm64: compat: align cacheflush syscall with arch/arm

Update handling of cacheflush syscall with changes made in arch/arm
counterpart:
 - return error to userspace when flushing syscall fails
 - split user cache-flushing into interruptible chunks
 - don't bother rounding to nearest vma

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
[will: changed internal return value from -EINTR to 0 to match arch/arm/]
Signed-off-by: Will Deacon <will.deacon@arm.com>

arch/arm64/include/asm/cacheflush.h

diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h
index 689b637..7ae31a2 100644
--- a/arch/arm64/include/asm/cacheflush.h
+++ b/arch/arm64/include/asm/cacheflush.h
@@ -73,7 +73,7 @@
 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
 extern void flush_icache_range(unsigned long start, unsigned long end);
 extern void __flush_dcache_area(void *addr, size_t len);
-extern void __flush_cache_user_range(unsigned long start, unsigned long end);
+extern long __flush_cache_user_range(unsigned long start, unsigned long end);
 
 static inline void flush_cache_mm(struct mm_struct *mm)
 {