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From: Naoya Horiguchi To: Jiaqi Yan Cc: mike.kravetz@oracle.com, naoya.horiguchi@nec.com, songmuchun@bytedance.com, shy828301@gmail.com, linmiaohe@huawei.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, duenwen@google.com, axelrasmussen@google.com, jthoughton@google.com Subject: Re: [PATCH v2 4/4] selftests/mm: add tests for HWPOISON hugetlbfs read Message-ID: <20230707005134.GB72816@ik1-406-35019.vs.sakura.ne.jp> References: <20230623164015.3431990-1-jiaqiyan@google.com> <20230623164015.3431990-5-jiaqiyan@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230623164015.3431990-5-jiaqiyan@google.com> X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 2D64B180003 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: 69i39pggmoj7qs5ax1gk9xt8ok1wc3e4 X-HE-Tag: 1688691107-726069 X-HE-Meta: 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 SZDcke37 if8jRtgXLhtjGlyj/LfYNSvL62u89HnzN8b68A6Pad1YWzQOnNJc7m6ghNazDY8hneLqfK8KMkLAOJFUwvySUJTgbozjON1KfSKcg X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jun 23, 2023 at 04:40:15PM +0000, Jiaqi Yan wrote: > Add tests for the improvement made to read operation on HWPOISON > hugetlb page with different read granularities. For each chunk size, > three read scenarios are tested: > 1. Simple regression test on read without HWPOISON. > 2. Sequential read page by page should succeed until encounters the 1st > raw HWPOISON subpage. > 3. After skip raw HWPOISON subpage by lseek, read()s always succeed. > > Signed-off-by: Jiaqi Yan Reviewed-by: Naoya Horiguchi