x86/pgtable: drop pXd_none() checks from pXd_free_pYd_table()

The core code already has a check for pXd_none(), so remove it from the
architecture implementation.

Link: http://lkml.kernel.org/r/1544120495-17438-4-git-send-email-will.deacon@arm.com
Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 59274e2c1ac44c0fb2fb4c004e3e64484b305335..e95a7d6ac8f896b6244f1cde54115b49fab4d2b2 100644 (file)
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -811,9 +811,6 @@ int pud_free_pmd_page(pud_t *pud, unsigned long addr)
        pte_t *pte;
        int i;
 
-       if (pud_none(*pud))
-               return 1;
-
        pmd = (pmd_t *)pud_page_vaddr(*pud);
        pmd_sv = (pmd_t *)__get_free_page(GFP_KERNEL);
        if (!pmd_sv)
@@ -855,9 +852,6 @@ int pmd_free_pte_page(pmd_t *pmd, unsigned long addr)
 {
        pte_t *pte;
 
-       if (pmd_none(*pmd))
-               return 1;
-
        pte = (pte_t *)pmd_page_vaddr(*pmd);
        pmd_clear(pmd);