Re: [PATCH v2 19/25] netfs: Speed up buffered reading

[PATCH v2 00/25] netfs: Read/write improvements · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 01/25] netfs, ceph: Partially revert "netfs: Replace PG_fscache by setting folio->private and marking dirty" · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 03/25] netfs: Adjust labels in /proc/fs/netfs/stats · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 02/25] cachefiles: Fix non-taking of sb_writers around set/removexattr · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 04/25] netfs: Record contention stats for writeback lock · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 05/25] netfs: Reduce number of conditional branches in netfs_perform_write() · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 06/25] netfs, cifs: Move CIFS_INO_MODIFIED_ATTR to netfs_inode · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 07/25] netfs: Move max_len/max_nr_segs from netfs_io_subrequest to netfs_io_stream · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 08/25] netfs: Reserve netfs_sreq_source 0 as unset/unknown · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 09/25] netfs: Remove NETFS_COPY_TO_CACHE · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 10/25] netfs: Set the request work function upon allocation · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 11/25] netfs: Use bh-disabling spinlocks for rreq->lock · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 12/25] mm: Define struct folio_queue and ITER_FOLIOQ to handle a sequence of folios · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 13/25] iov_iter: Provide copy_folio_from_iter() · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 14/25] cifs: Provide the capability to extract from ITER_FOLIOQ to RDMA SGEs · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 15/25] netfs: Use new folio_queue data type and iterator instead of xarray iter · David Howells <dhowells@redhat.com> · 2024-08-14
Re: [PATCH v2 15/25] netfs: Use new folio_queue data type and iterator instead of xarray iter · Leon Romanovsky <leon@kernel.org> · 2024-09-24
[PATCH v2 16/25] netfs: Provide an iterator-reset function · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 17/25] netfs: Simplify the writeback code · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 18/25] afs: Make read subreqs async · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-08-14
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Simon Horman <horms@kernel.org> · 2024-08-16
[PATCH v2 19/25] netfs: Speed up buffered reading · Manu Bretelle <hidden> · 2024-09-23
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-23
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-23
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-23
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-23
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Manu Bretelle <hidden> · 2024-09-23
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-24
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-25
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Leon Romanovsky <leon@kernel.org> · 2024-09-25
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-29
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-29
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Leon Romanovsky <leon@kernel.org> · 2024-09-29
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-30
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-30
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-30
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-30
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Omar Sandoval <osandov@osandov.com> · 2024-09-30
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-27
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-27
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · David Howells <dhowells@redhat.com> · 2024-09-27
Re: [PATCH v2 19/25] netfs: Speed up buffered reading · Eduard Zingerman <eddyz87@gmail.com> · 2024-09-27
[PATCH v2 20/25] netfs: Remove fs/netfs/io.c · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 21/25] cachefiles, netfs: Fix write to partial block at EOF · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 22/25] netfs: Cancel dirty folios that have no storage destination · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 23/25] cifs: Use iterate_and_advance*() routines directly for hashing · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 24/25] cifs: Switch crypto buffer to use a folio_queue rather than an xarray · David Howells <dhowells@redhat.com> · 2024-08-14
[PATCH v2 25/25] cifs: Don't support ITER_XARRAY · David Howells <dhowells@redhat.com> · 2024-08-14
Re: [PATCH v2 00/25] netfs: Read/write improvements · Christian Brauner <brauner@kernel.org> · 2024-08-15

From: Eduard Zingerman <eddyz87@gmail.com>
Date: 2024-09-29 09:37:51
Also in: ceph-devel, linux-cifs, linux-fsdevel, linux-mm, linux-nfs, lkml, netfs, v9fs

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:

https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=netfs-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.

[...]

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