This bug was fixed in the package zfs-linux - 0.8.4-1ubuntu13
---------------
zfs-linux (0.8.4-1ubuntu13) hirsute; urgency=medium
* Add Linux 5.9 compat fixes (LP: #1899826)
- 4800-Linux-5.9-compat-add-linux-blkdev.h-include.patch
include blkdev.h in various sources
- 4801-Linux-5.9-compat-NR_SLAB_RECLAIMABLE.patch
deprecate some older page free stats for arc free page calculation
- 4802-Linux-5.9-compat-make_request_fn-replaced-with-submi.patch
API change for block allocation
- 4805-Increase-Supported-Linux-Kernel-to-5.9.patch
allows driver to be built against 5.9
* Add Linux 5.10 compat fixes
- 4710-Use-percpu_counter-for-obj_alloc-counter-of-Linux-ba.patch
prerequisite for 4804-Linux-5.10-compat-frame.h-renamed-objtool.h.patch
- 4720-Linux-5.7-compat-Include-linux-sched.h-in-spl-sys-mu.patch
prerequisite for next set of patches
- 4804-Linux-5.10-compat-frame.h-renamed-objtool.h.patch
rename check of linux/frame.h to linux/frame.h
- 4805-Linux-5.10-compat-percpu_ref-added-data-member.patch
API check to the percpu_ref structure
- 4806-Linux-5.10-compat-check_disk_change-removed.patch
check_disk_change removed, functionality moved to zfs_check_media_change
- 4807-Linux-5.10-compat-revalidate_disk_size-added.patch
use revalidate_disk_size where necessary
-- Colin Ian King <[email protected]> Tue, 3 Nov 2020 12:22:22
+0000
** Changed in: zfs-linux (Ubuntu Hirsute)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1899826
Title:
backport upstream fixes for 5.9 Linux support
Status in zfs-linux package in Ubuntu:
Fix Released
Status in zfs-linux source package in Groovy:
New
Status in zfs-linux source package in Hirsute:
Fix Released
Bug description:
== SRU Request Groovy ==
Upstream zfs supports 5.9. it would be useful to backport these for
users who want newer kernels.
== The Fix ==
Although 6 fixes are required, 2 add changes that get removed by a
later change, so one can backport this with just the following 4
changes:
1823c8fe6a4a20971463e9b51615dad412aea9a9 ("Linux 5.9 compat: add
linux/blkdev.h include")
3e29e1971bbb4ab63dafeb592b747ef56bad3534 ("Linux 5.9 compat:
NR_SLAB_RECLAIMABLE")
d817c17100183b266aa6bf8b868e016805d51d16 ("Linux 5.9 compat: make_request_fn
replaced with submit_bio")
4b59c195ffbaebfdd5f0971a54613c0ed7c42005 ("Increase Supported Linux Kernel to
5.9")
== Regression potential ==
The first patch just includes blkdev.h to workaround a build warning,
so the results in no functional change to the working code.
The second patch removes legacy arc page free estimation by droping
the accounting for inactive anonymous pages and reclaimable pages on
the slab. This change removes a very minor component of the free
memory calculation and speeds up arc free stats calculations. There is
a potential that this small change in free page calculation may impact
systems where memory is more constrained, but the change is so small I
believe this really is insignificant.
The third patch is a build time detection of the kernel block
allocation queue due to API changes, so should not change behaviour
for current 5.8 kernels, only change behaviour for newer kernels with
the newer kernel API. Hence for the released 5.8 groovy kernel the
code will not be changed, so the regression potential for 5.8 is zero.
The final patch changes the META build data to allow the driver to
build on newer kernels, so the risk on this change is effectively
zero.
== Testing ==
Run the autotest client tests for ZFS tests:
ubuntu_zfs_smoke_tests (general functionality smoke tests)
ubuntu_zfs_fstests (file system semantics tests)
ubuntu_zfs_xfs_generic (subset of XFS tests on ZFS)
ubuntu_zfs_stress (stress-ng file system tests on a wide range of ZFS mount
options)
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