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Tue, 25 May 2021 19:36:21 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id b12sm2984392pjd.22.2021.05.25.19.36.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 25 May 2021 19:36:20 -0700 (PDT) Subject: Re: [PATCH v7 01/12] iova: Export alloc_iova_fast() To: Xie Yongji , mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, hch@infradead.org, christian.brauner@canonical.com, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, joro@8bytes.org Cc: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org References: <20210517095513.850-1-xieyongji@bytedance.com> <20210517095513.850-2-xieyongji@bytedance.com> From: Jason Wang Message-ID: <6ca337fe-2c8c-95c9-672e-0d4f104f66eb@redhat.com> Date: Wed, 26 May 2021 10:36:10 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <20210517095513.850-2-xieyongji@bytedance.com> Content-Type: text/plain; charset=gbk; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org ÔÚ 2021/5/17 ÏÂÎç5:55, Xie Yongji дµÀ: > Export alloc_iova_fast() so that some modules can use it > to improve iova allocation efficiency. > > Signed-off-by: Xie Yongji > --- > drivers/iommu/iova.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c > index e6e2fa85271c..317eef64ffef 100644 > --- a/drivers/iommu/iova.c > +++ b/drivers/iommu/iova.c > @@ -450,6 +450,7 @@ alloc_iova_fast(struct iova_domain *iovad, unsigned long size, > > return new_iova->pfn_lo; > } > +EXPORT_SYMBOL_GPL(alloc_iova_fast); > > /** > * free_iova_fast - free iova pfn range into rcache Interesting, do we need export free_iova_fast() as well? Thanks