On Wed 01-07-15 14:27:57, Nicholas Krause wrote:
> This makes the function zap_huge_pmd have a return type of bool
> now due to this particular function always returning one or zero
> as its return value.
How does this help anything? IMO this just generates a pointless churn
in the code without a good reason.
> Signed-off-by: Nicholas Krause <xerofo...@gmail.com>
> ---
> include/linux/huge_mm.h | 2 +-
> mm/huge_memory.c | 6 +++---
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
> index f10b20f..e83174e 100644
> --- a/include/linux/huge_mm.h
> +++ b/include/linux/huge_mm.h
> @@ -19,7 +19,7 @@ extern struct page *follow_trans_huge_pmd(struct
> vm_area_struct *vma,
> unsigned long addr,
> pmd_t *pmd,
> unsigned int flags);
> -extern int zap_huge_pmd(struct mmu_gather *tlb,
> +extern bool zap_huge_pmd(struct mmu_gather *tlb,
> struct vm_area_struct *vma,
> pmd_t *pmd, unsigned long addr);
> extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index c107094..32b1993 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -1384,11 +1384,11 @@ out:
> return 0;
> }
>
> -int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
> +bool zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
> pmd_t *pmd, unsigned long addr)
> {
> spinlock_t *ptl;
> - int ret = 0;
> + int ret = false;
>
> if (__pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
> struct page *page;
> @@ -1419,7 +1419,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct
> vm_area_struct *vma,
> tlb_remove_page(tlb, page);
> }
> pte_free(tlb->mm, pgtable);
> - ret = 1;
> + ret = true;
> }
> return ret;
> }
> --
> 2.1.4
>
--
Michal Hocko
SUSE Labs
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