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Date: Mon, 4 Jan 2021 14:58:39 +0800 From: Muchun Song <songmuchun@...edance.com> To: mike.kravetz@...cle.com, akpm@...ux-foundation.org Cc: hillf.zj@...baba-inc.com, n-horiguchi@...jp.nec.com, ak@...ux.intel.com, yongjun_wei@...ndmicro.com.cn, mhocko@...e.cz, linux-mm@...ck.org, linux-kernel@...r.kernel.org, Muchun Song <songmuchun@...edance.com> Subject: [PATCH 2/6] hugetlbfs: fix cannot migrate the fallocated HugeTLB page Because we only can isolate a active page via isolate_huge_page() and hugetlbfs_fallocate() forget to mark it as active, we cannot isolate and migrate those pages. Fixes: 70c3547e36f5 (hugetlbfs: add hugetlbfs_fallocate()) Signed-off-by: Muchun Song <songmuchun@...edance.com> --- fs/hugetlbfs/inode.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index b5c109703daa..2aceb085d202 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -737,10 +737,11 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, /* * unlock_page because locked by add_to_page_cache() - * page_put due to reference from alloc_huge_page() + * put_page() (which is in the putback_active_hugepage()) + * due to reference from alloc_huge_page() */ unlock_page(page); - put_page(page); + putback_active_hugepage(page); } if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > inode->i_size) -- 2.11.0
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