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[47.55.120.4]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8b3295db543sm454734785a.38.2025.11.21.15.33.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Nov 2025 15:33:17 -0800 (PST) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1vMacu-00000001bcR-49X1; Fri, 21 Nov 2025 19:33:16 -0400 Date: Fri, 21 Nov 2025 19:33:16 -0400 From: Jason Gunthorpe To: "Li,Rongqing" Cc: Leon Romanovsky , "huangjunxian6@hisilicon.com" , "linux-rdma@vger.kernel.org" Subject: Re: [????] Re: [????] Re: [PATCH][v2] RDMA/core: Prevent soft lockup during large user memory region cleanup Message-ID: <20251121233316.GI233636@ziepe.ca> References: <20251113095317.2628-1-lirongqing@baidu.com> <20251117174738.GE17968@ziepe.ca> <02011baf337649f6997166f223417417@baidu.com> <20251119190602.GN17968@ziepe.ca> <4482842b3e774a7d996130b0651d1923@baidu.com> Precedence: bulk X-Mailing-List: linux-rdma@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: <4482842b3e774a7d996130b0651d1923@baidu.com> On Thu, Nov 20, 2025 at 03:28:18AM +0000, Li,Rongqing wrote: > Thanks, I understand > > To minimize performance impact on releasing memory regions, call cond_resched() per 4k loop, how about the below This seems like a reasonable idea, though I would just use % for better clarity. The compiler knows how to convert that to bitmasking Jason