nommu: use flush_icache_user_range in brk and mmap

These obviously operate on user addresses.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-29-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/nommu.c b/mm/nommu.c
index dfae55f..062dc1c 100644 (file)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -433,7 +433,7 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
        /*
         * Ok, looks good - let it rip.
         */
-       flush_icache_range(mm->brk, brk);
+       flush_icache_user_range(mm->brk, brk);
        return mm->brk = brk;
 }
 
@@ -1277,7 +1277,7 @@ share:
        /* we flush the region from the icache only when the first executable
         * mapping of it is made  */
        if (vma->vm_flags & VM_EXEC && !region->vm_icache_flushed) {
-               flush_icache_range(region->vm_start, region->vm_end);
+               flush_icache_user_range(region->vm_start, region->vm_end);
                region->vm_icache_flushed = true;
        }