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Thu, 27 Aug 2026 06:54:11 -0700 (PDT) Date: Thu, 27 Aug 2026 21:54:05 +0800 From: Kairui Song To: Kemeng Shi Cc: akpm@linux-foundation.org, chrisl@kernel.org, kasong@tencent.com, nphamcs@gmail.com, baoquan.he@linux.dev, youngjun.park@lge.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/4] mm, swap: return early from swap_extend_table_try_free() on first non-zero entry Message-ID: References: <20260820115505.20027-1-shikemeng@huaweicloud.com> <20260820115505.20027-4-shikemeng@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260820115505.20027-4-shikemeng@huaweicloud.com> On Thu, Aug 20, 2026 at 07:55:04PM +0800, Kemeng Shi wrote: > Return immediately when the first non-zero swap count is found as > any non-zero swap count prevents freeing extend_table and further > iteration is pointless. > > Signed-off-by: Kemeng Shi > Reviewed-by: Youngjun Park > --- > mm/swapfile.c | 9 +++------ > 1 file changed, 3 insertions(+), 6 deletions(-) Looks good, nice optimization. Acked-by: Kairui Song