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[142.162.115.133]) by smtp.gmail.com with ESMTPSA id 14sm10064746qkf.119.2021.04.13.06.35.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Apr 2021 06:35:12 -0700 (PDT) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1lWJCC-005HJi-1A; Tue, 13 Apr 2021 10:35:12 -0300 Date: Tue, 13 Apr 2021 10:35:12 -0300 From: Jason Gunthorpe To: Daniel Wagner Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , Steve Wise , Leon Romanovsky , Potnuri Bharat Teja Subject: Re: [PATCH] nvme: Drop WQ_MEM_RECLAIM flag from core workqueues Message-ID: <20210413133512.GH227011@ziepe.ca> References: <20210412122330.5166-1-dwagner@suse.de> <20210412123149.GE227011@ziepe.ca> <20210412124909.olui5hfhceakt4u4@beryllium.lan> <20210412130402.GF227011@ziepe.ca> <20210413085404.tzam5lprtspwcek4@beryllium.lan> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210413085404.tzam5lprtspwcek4@beryllium.lan> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210413_063516_186194_B266E56D X-CRM114-Status: GOOD ( 12.15 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Tue, Apr 13, 2021 at 10:54:04AM +0200, Daniel Wagner wrote: > Hmm, I am struggling with your last statement. If a worker does an > allocation it might block. I understand this is something which a worker > in a WQ_MEM_RECLAIM context is not allowed to do. > > My aim is still to get rid of the warning triggered by the rdma > code. The WQ_MEM_RECLAIM is placed on a workqueue not because of what is *inside* the work, but because of what is *waiting* on the work. Jason _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme