diff options
| -rw-r--r-- | include/linux/huge_mm.h | 2 | ||||
| -rw-r--r-- | mm/huge_memory.c | 15 |
2 files changed, 9 insertions, 8 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 92ce91c03cd0..6f14de45b5ce 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -11,7 +11,7 @@ extern struct page *follow_trans_huge_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd, unsigned int flags); -extern int madvise_free_huge_pmd(struct mmu_gather *tlb, +extern bool madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, unsigned long next); extern int zap_huge_pmd(struct mmu_gather *tlb, diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 121a7f808216..8f0cd35345dc 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1249,25 +1249,26 @@ out: return 0; } -int madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, +/* + * Return true if we do MADV_FREE successfully on entire pmd page. + * Otherwise, return false. + */ +bool madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, unsigned long next) - { spinlock_t *ptl; pmd_t orig_pmd; struct page *page; struct mm_struct *mm = tlb->mm; - int ret = 0; + bool ret = false; ptl = pmd_trans_huge_lock(pmd, vma); if (!ptl) goto out_unlocked; orig_pmd = *pmd; - if (is_huge_zero_pmd(orig_pmd)) { - ret = 1; + if (is_huge_zero_pmd(orig_pmd)) goto out; - } page = pmd_page(orig_pmd); /* @@ -1309,7 +1310,7 @@ int madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, set_pmd_at(mm, addr, pmd, orig_pmd); tlb_remove_pmd_tlb_entry(tlb, pmd, addr); } - ret = 1; + ret = true; out: spin_unlock(ptl); out_unlocked: |