| Message ID | 20220715225108.193398-1-sj@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | xen-blk{back,front}: Fix two bugs in 'feature_persistent' | expand |
Hello SeongJae, Thanks for the efforts. I've tested backend patches(1,2) on my custom 5.10 kernel (since I can't test on vanilla) and it works for me. Best regards, Andrii On Sat, Jul 16, 2022 at 1:51 AM SeongJae Park <sj@kernel.org> wrote: > > Introduction of 'feature_persistent' made two bugs. First one is wrong > overwrite of 'vbd->feature_gnt_persistent' in 'blkback' due to wrong > parameter value caching position, and the second one is unintended > behavioral change that could break previous dynamic frontend/backend > persistent feature support changes. This patchset fixes the issues. > > Changes from v3 > (https://lore.kernel.org/xen-devel/20220715175521.126649-1-sj@kernel.org/) > - Split 'blkback' patch for each of the two issues > - Add 'Reported-by: Andrii Chepurnyi <andrii.chepurnyi82@gmail.com>' > > Changes from v2 > (https://lore.kernel.org/xen-devel/20220714224410.51147-1-sj@kernel.org/) > - Keep the behavioral change of v1 > - Update blkfront's counterpart to follow the changed behavior > - Update documents for the changed behavior > > Changes from v1 > (https://lore.kernel.org/xen-devel/20220106091013.126076-1-mheyne@amazon.de/) > - Avoid the behavioral change > (https://lore.kernel.org/xen-devel/20220121102309.27802-1-sj@kernel.org/) > - Rebase on latest xen/tip/linux-next > - Re-work by SeongJae Park <sj@kernel.org> > - Cc stable@ > > Maximilian Heyne (1): > xen-blkback: Apply 'feature_persistent' parameter when connect > > SeongJae Park (2): > xen-blkback: fix persistent grants negotiation > xen-blkfront: Apply 'feature_persistent' parameter when connect > > .../ABI/testing/sysfs-driver-xen-blkback | 2 +- > .../ABI/testing/sysfs-driver-xen-blkfront | 2 +- > drivers/block/xen-blkback/xenbus.c | 20 ++++++++----------- > drivers/block/xen-blkfront.c | 4 +--- > 4 files changed, 11 insertions(+), 17 deletions(-) > > -- > 2.25.1 >
On Fri, Jul 15, 2022 at 10:51:05PM +0000, SeongJae Park wrote: > > Introduction of 'feature_persistent' made two bugs. First one is wrong > overwrite of 'vbd->feature_gnt_persistent' in 'blkback' due to wrong > parameter value caching position, and the second one is unintended > behavioral change that could break previous dynamic frontend/backend > persistent feature support changes. This patchset fixes the issues. > > Changes from v3 > (https://lore.kernel.org/xen-devel/20220715175521.126649-1-sj@kernel.org/) > - Split 'blkback' patch for each of the two issues > - Add 'Reported-by: Andrii Chepurnyi <andrii.chepurnyi82@gmail.com>' > > Changes from v2 > (https://lore.kernel.org/xen-devel/20220714224410.51147-1-sj@kernel.org/) > - Keep the behavioral change of v1 > - Update blkfront's counterpart to follow the changed behavior > - Update documents for the changed behavior > > Changes from v1 > (https://lore.kernel.org/xen-devel/20220106091013.126076-1-mheyne@amazon.de/) > - Avoid the behavioral change > (https://lore.kernel.org/xen-devel/20220121102309.27802-1-sj@kernel.org/) > - Rebase on latest xen/tip/linux-next > - Re-work by SeongJae Park <sj@kernel.org> > - Cc stable@ > > Maximilian Heyne (1): > xen-blkback: Apply 'feature_persistent' parameter when connect > > SeongJae Park (2): > xen-blkback: fix persistent grants negotiation > xen-blkfront: Apply 'feature_persistent' parameter when connect > > .../ABI/testing/sysfs-driver-xen-blkback | 2 +- > .../ABI/testing/sysfs-driver-xen-blkfront | 2 +- > drivers/block/xen-blkback/xenbus.c | 20 ++++++++----------- > drivers/block/xen-blkfront.c | 4 +--- > 4 files changed, 11 insertions(+), 17 deletions(-) > > -- > 2.25.1 > Changes look good to me. Thank you for reworking my patch and also fixing the blkfront driver. Reviewed-by: Maximilian Heyne <mheyne@amazon.de> Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879
On 16.07.22 00:51, SeongJae Park wrote: > Introduction of 'feature_persistent' made two bugs. First one is wrong > overwrite of 'vbd->feature_gnt_persistent' in 'blkback' due to wrong > parameter value caching position, and the second one is unintended > behavioral change that could break previous dynamic frontend/backend > persistent feature support changes. This patchset fixes the issues. > > Changes from v3 > (https://lore.kernel.org/xen-devel/20220715175521.126649-1-sj@kernel.org/) > - Split 'blkback' patch for each of the two issues > - Add 'Reported-by: Andrii Chepurnyi <andrii.chepurnyi82@gmail.com>' > > Changes from v2 > (https://lore.kernel.org/xen-devel/20220714224410.51147-1-sj@kernel.org/) > - Keep the behavioral change of v1 > - Update blkfront's counterpart to follow the changed behavior > - Update documents for the changed behavior > > Changes from v1 > (https://lore.kernel.org/xen-devel/20220106091013.126076-1-mheyne@amazon.de/) > - Avoid the behavioral change > (https://lore.kernel.org/xen-devel/20220121102309.27802-1-sj@kernel.org/) > - Rebase on latest xen/tip/linux-next > - Re-work by SeongJae Park <sj@kernel.org> > - Cc stable@ > > Maximilian Heyne (1): > xen-blkback: Apply 'feature_persistent' parameter when connect > > SeongJae Park (2): > xen-blkback: fix persistent grants negotiation > xen-blkfront: Apply 'feature_persistent' parameter when connect > > .../ABI/testing/sysfs-driver-xen-blkback | 2 +- > .../ABI/testing/sysfs-driver-xen-blkfront | 2 +- > drivers/block/xen-blkback/xenbus.c | 20 ++++++++----------- > drivers/block/xen-blkfront.c | 4 +--- > 4 files changed, 11 insertions(+), 17 deletions(-) > For the series: Reviewed-by: Juergen Gross <jgross@suse.com> Juergen
On 16.07.22 00:51, SeongJae Park wrote: > Introduction of 'feature_persistent' made two bugs. First one is wrong > overwrite of 'vbd->feature_gnt_persistent' in 'blkback' due to wrong > parameter value caching position, and the second one is unintended > behavioral change that could break previous dynamic frontend/backend > persistent feature support changes. This patchset fixes the issues. > > Changes from v3 > (https://lore.kernel.org/xen-devel/20220715175521.126649-1-sj@kernel.org/) > - Split 'blkback' patch for each of the two issues > - Add 'Reported-by: Andrii Chepurnyi <andrii.chepurnyi82@gmail.com>' > > Changes from v2 > (https://lore.kernel.org/xen-devel/20220714224410.51147-1-sj@kernel.org/) > - Keep the behavioral change of v1 > - Update blkfront's counterpart to follow the changed behavior > - Update documents for the changed behavior > > Changes from v1 > (https://lore.kernel.org/xen-devel/20220106091013.126076-1-mheyne@amazon.de/) > - Avoid the behavioral change > (https://lore.kernel.org/xen-devel/20220121102309.27802-1-sj@kernel.org/) > - Rebase on latest xen/tip/linux-next > - Re-work by SeongJae Park <sj@kernel.org> > - Cc stable@ > > Maximilian Heyne (1): > xen-blkback: Apply 'feature_persistent' parameter when connect > > SeongJae Park (2): > xen-blkback: fix persistent grants negotiation > xen-blkfront: Apply 'feature_persistent' parameter when connect > > .../ABI/testing/sysfs-driver-xen-blkback | 2 +- > .../ABI/testing/sysfs-driver-xen-blkfront | 2 +- > drivers/block/xen-blkback/xenbus.c | 20 ++++++++----------- > drivers/block/xen-blkfront.c | 4 +--- > 4 files changed, 11 insertions(+), 17 deletions(-) > Series pushed to xen/tip.git for-linus-6.0 Juergen