[PATCH v1 3/9] powerpc/vdso: Remove NULL termination element in vdso_pagelist

[Christophe Leroy]

No need of a NULL last element in pagelists, install_special_mapping()
knows how long the list is.

Remove that element.

Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu>
---
 arch/powerpc/kernel/vdso.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 3bc4d5b1980b..daef14a284a3 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -752,7 +752,7 @@ static int __init vdso_init(void)
 
 #ifdef CONFIG_VDSO32
        /* Make sure pages are in the correct state */
-       vdso32_pagelist = kcalloc(vdso32_pages + 2, sizeof(struct page *),
+       vdso32_pagelist = kcalloc(vdso32_pages + 1, sizeof(struct page *),
                                  GFP_KERNEL);
        if (!vdso32_pagelist)
                goto alloc_failed;
@@ -760,12 +760,11 @@ static int __init vdso_init(void)
        for (i = 0; i < vdso32_pages; i++)
                vdso32_pagelist[i] = virt_to_page(vdso32_kbase + i * PAGE_SIZE);
 
-       vdso32_pagelist[i++] = virt_to_page(vdso_data);
-       vdso32_pagelist[i] = NULL;
+       vdso32_pagelist[i] = virt_to_page(vdso_data);
 #endif
 
 #ifdef CONFIG_PPC64
-       vdso64_pagelist = kcalloc(vdso64_pages + 2, sizeof(struct page *),
+       vdso64_pagelist = kcalloc(vdso64_pages + 1, sizeof(struct page *),
                                  GFP_KERNEL);
        if (!vdso64_pagelist)
                goto alloc_failed;
@@ -773,8 +772,7 @@ static int __init vdso_init(void)
        for (i = 0; i < vdso64_pages; i++)
                vdso64_pagelist[i] = virt_to_page(vdso64_kbase + i * PAGE_SIZE);
 
-       vdso64_pagelist[i++] = virt_to_page(vdso_data);
-       vdso64_pagelist[i] = NULL;
+       vdso64_pagelist[i] = virt_to_page(vdso_data);
 #endif /* CONFIG_PPC64 */
 
        smp_wmb();
-- 
2.25.0