arm64: vdso: constify vm_special_mapping used for aarch32 vectors page

Jisheng Zhang · wildea01 · commit b6d081bddf39 · 2016-08-22T12:32:22.000+01:00
The vm_special_mapping spec which is used for aarch32 vectors page is
never modified, so mark it as const.

Acked-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Signed-off-by: Jisheng Zhang &lt;jszhang@marvell.com&gt;
Signed-off-by: Will Deacon &lt;will.deacon@arm.com&gt;
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
@@ -88,7 +88,7 @@ int aarch32_setup_vectors_page(struct linux_binprm *bprm, int uses_interp)
 {
 	struct mm_struct *mm = current->mm;
 	unsigned long addr = AARCH32_VECTORS_BASE;
-	static struct vm_special_mapping spec = {
+	static const struct vm_special_mapping spec = {
 		.name	= "[vectors]",
 		.pages	= vectors_page,
 

Original file line number	Diff line number	Diff line change
`@@ -88,7 +88,7 @@ int aarch32_setup_vectors_page(struct linux_binprm *bprm, int uses_interp)`
`88`	`88`	`{`
`89`	`89`	`struct mm_struct *mm = current->mm;`
`90`	`90`	`unsigned long addr = AARCH32_VECTORS_BASE;`
`91`		`- static struct vm_special_mapping spec = {`
	`91`	`+ static const struct vm_special_mapping spec = {`
`92`	`92`	`.name = "[vectors]",`
`93`	`93`	`.pages = vectors_page,`
`94`	`94`