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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>
This commit is contained in:
Mark Rutland 2014-02-05 10:24:13 +00:00 committed by Catalin Marinas
parent bfb67a5606
commit 883d50a0ed
1 changed files with 2 additions and 9 deletions
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11
arch/arm64/mm/pgd.c
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@ -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)