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[RESEND,v4,2/5] arm64: mmu: Drop pXd_present() checks from pXd_free_pYd_table()

Message ID 1544120495-17438-3-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: Thomas Gleixner <tglx@linutronix.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

---
 arch/arm64/mm/mmu.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

-- 
2.1.4
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Patch

diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index d1d6601b385d..786cfa6355be 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -989,10 +989,8 @@  int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr)
 
 	pmd = READ_ONCE(*pmdp);
 
-	if (!pmd_present(pmd))
-		return 1;
 	if (!pmd_table(pmd)) {
-		VM_WARN_ON(!pmd_table(pmd));
+		VM_WARN_ON(1);
 		return 1;
 	}
 
@@ -1012,10 +1010,8 @@  int pud_free_pmd_page(pud_t *pudp, unsigned long addr)
 
 	pud = READ_ONCE(*pudp);
 
-	if (!pud_present(pud))
-		return 1;
 	if (!pud_table(pud)) {
-		VM_WARN_ON(!pud_table(pud));
+		VM_WARN_ON(1);
 		return 1;
 	}