It sounds unnecessary to release mmap_sem in the middle of unmmaping vdso map.
This is API change only. Signed-off-by: Yang Shi <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: [email protected] --- arch/x86/entry/vdso/vma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index 5b8b556..6359ae5 100644 --- a/arch/x86/entry/vdso/vma.c +++ b/arch/x86/entry/vdso/vma.c @@ -192,7 +192,7 @@ static int map_vdso(const struct vdso_image *image, unsigned long addr) if (IS_ERR(vma)) { ret = PTR_ERR(vma); - do_munmap(mm, text_start, image->size, NULL); + do_munmap(mm, text_start, image->size, NULL, true); } else { current->mm->context.vdso = (void __user *)text_start; current->mm->context.vdso_image = image; -- 1.8.3.1
