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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> Git-commit: 883d50a0ed403446437444a495356ce31e1197a3 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Signed-off-by: Ian Maund <imaund@codeaurora.org>
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@ -32,17 +32,10 @@
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pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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pgd_t *new_pgd;
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if (PGD_SIZE == PAGE_SIZE)
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new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
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return (pgd_t *)get_zeroed_page(GFP_KERNEL);
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else
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new_pgd = kzalloc(PGD_SIZE, GFP_KERNEL);
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if (!new_pgd)
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return NULL;
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return new_pgd;
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return kzalloc(PGD_SIZE, GFP_KERNEL);
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}
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void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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