From: Matthew Wilcox <willy@infradead.org>
To: yangerkun <yangerkun@huawei.com>
Cc: mike.kravetz@oracle.com, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, yukuai3@huawei.com
Subject: Re: [PATCH] hugetlbfs: avoid overflow in hugetlbfs_fallocate
Date: Wed, 24 Nov 2021 04:24:25 +0000 [thread overview]
Message-ID: <YZ2+ecB1dDOdY+gp@casper.infradead.org> (raw)
In-Reply-To: <20211124040818.2219374-1-yangerkun@huawei.com>
On Wed, Nov 24, 2021 at 12:08:18PM +0800, yangerkun wrote:
> start = offset >> hpage_shift;
> - end = (offset + len + hpage_size - 1) >> hpage_shift;
> + end = ((unsigned long long)offset + len + hpage_size - 1)
> + >> hpage_shift;
+ end = DIV_ROUND_UP_ULL(offset + len, hpage_size);
next prev parent reply other threads:[~2021-11-24 4:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-24 4:08 yangerkun
2021-11-24 4:24 ` Matthew Wilcox [this message]
2021-11-24 6:05 ` yangerkun
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