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Sun, 29 Sep 2024 02:37:49 -0700 (PDT) Message-ID: Subject: Re: [PATCH v2 19/25] netfs: Speed up buffered reading From: Eduard Zingerman To: David Howells , Leon Romanovsky Cc: Christian Brauner , Manu Bretelle , asmadeus@codewreck.org, ceph-devel@vger.kernel.org, christian@brauner.io, ericvh@kernel.org, hsiangkao@linux.alibaba.com, idryomov@gmail.com, jlayton@kernel.org, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org, marc.dionne@auristor.com, netdev@vger.kernel.org, netfs@lists.linux.dev, pc@manguebit.com, smfrench@gmail.com, sprasad@microsoft.com, tom@talpey.com, v9fs@lists.linux.dev, willy@infradead.org Date: Sun, 29 Sep 2024 02:37:44 -0700 In-Reply-To: <2808175.1727601153@warthog.procyon.org.uk> References: <20240925103118.GE967758@unreal> <20240923183432.1876750-1-chantr4@gmail.com> <20240814203850.2240469-20-dhowells@redhat.com> <1279816.1727220013@warthog.procyon.org.uk> <4b5621958a758da830c1cf09c6f6893aed371f9d.camel@gmail.com> <2808175.1727601153@warthog.procyon.org.uk> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.4 (3.52.4-1.fc40) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Sun, 2024-09-29 at 10:12 +0100, David Howells wrote: > Can you try the attached? I've also put it on my branch here: >=20 > https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log= /?h=3Dnetfs-fixes Used your branch: fc22830c5a07 ("9p: Don't revert the I/O iterator after reading") dmesg is here: https://gist.github.com/eddyz87/4cd50c2cf01323641999dc386e2d41eb Still see null-ptr-deref. [...]