Commit 883d50a0 authored Feb 05, 2014 by Mark Rutland Committed by Catalin Marinas Feb 05, 2014

arm64: simplify pgd_alloc



Currently pgd_alloc has a redundant NULL check in its return path that
can be removed with no ill effects. With that removed it's also possible
to return early and eliminate the new_pgd temporary variable.

This patch applies said modifications, making the logic of pgd_alloc
correspond 1-1 with that of pgd_free.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent bfb67a56

arch/arm64/mm/pgd.c

+2 −9

Original line number	Diff line number	Diff line
		@@ -32,17 +32,10 @@

		pgd_t pgd_alloc(struct mm_struct mm)
		{
		pgd_t *new_pgd;

		if (PGD_SIZE == PAGE_SIZE)
		new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
		return (pgd_t *)get_zeroed_page(GFP_KERNEL);
		else
		new_pgd = kzalloc(PGD_SIZE, GFP_KERNEL);

		if (!new_pgd)
		return NULL;

		return new_pgd;
		return kzalloc(PGD_SIZE, GFP_KERNEL);
		}

		void pgd_free(struct mm_struct mm, pgd_t pgd)