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From: Kent Overstreet To: David Howells Cc: Jens Axboe , Al Viro , Christoph Hellwig , Matthew Wilcox , Jan Kara , Jeff Layton , David Hildenbrand , Jason Gunthorpe , Logan Gunthorpe , Hillf Danton , Christian Brauner , Linus Torvalds , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig , John Hubbard Subject: Re: [PATCH v20 29/32] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic Message-ID: References: <20230519074047.1739879-1-dhowells@redhat.com> <20230519074047.1739879-30-dhowells@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230519074047.1739879-30-dhowells@redhat.com> X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: C36BAC0009 X-Stat-Signature: kr5syjb679ofs6zrx1d7afrysb6qog5x X-HE-Tag: 1684545974-176113 X-HE-Meta: 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 0vf2cJJw TP2DRhfkKh93c0yoYFuFMC1d71Z0nXD5siKfic7IrIjvC33o3vu1OSIaJb21UNx4vj3bHQB0kAmDWkry9SXubysKjVDa0GYY8vs0k 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, May 19, 2023 at 08:40:44AM +0100, David Howells wrote: > From: Christoph Hellwig > > Replace BIO_NO_PAGE_REF with a BIO_PAGE_REFFED flag that has the inverted > meaning is only set when a page reference has been acquired that needs to > be released by bio_release_pages(). What was the motivation for this patch?