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[RESEND,v4,3/5] x86/pgtable: Drop pXd_none() checks from pXd_free_pYd_table()

Message ID 1544120495-17438-4-git-send-email-will.deacon@arm.com
State New
Headers show
Series Clean up huge vmap and ioremap code | expand

Commit Message

Will Deacon Dec. 6, 2018, 6:21 p.m. UTC 
The core code already has a check for pXd_none(), so remove it from the
architecture implementation.

Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

Reviewed-by: Toshi Kani <toshi.kani@hpe.com>

Signed-off-by: Will Deacon <will.deacon@arm.com>

---
 arch/x86/mm/pgtable.c | 6 ------
 1 file changed, 6 deletions(-)

-- 
2.1.4
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Patch

diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 59274e2c1ac4..e95a7d6ac8f8 100644
--- 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);