Public bug reported: Hi,
I'm asking if it would be possible to cherry-pick patch "dm crypt: add flags to optionally bypass kcryptd workqueues" into the 5.4 Ubuntu kernel. This patch has been merged in mainline kernel 5.9 https://github.com/torvalds/linux/commit/39d42fa96ba1b7d2544db3f8ed5da8fb0d5cb877 but was not tagged for the stable tree. This patch provides important performance gains for some workloads using dm-crypt / LUKS and cherry-picking it would be very beneficial for dm- crypt users. You can find details on the expected gain in the following links: * https://www.redhat.com/archives/dm-devel/2020-July/msg00138.html * https://blog.cloudflare.com/speeding-up-linux-disk-encryption/ The patch mostly applies cleanly on the Ubuntu 5.4 kernel, the only merge conflict is due to the module version at the end of the patch. I can provide a backport patch if needed. Thanks, ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1910976 Title: Cherry-pick dm-crypt performance improvement patch from Linux 5.9 Status in linux package in Ubuntu: New Bug description: Hi, I'm asking if it would be possible to cherry-pick patch "dm crypt: add flags to optionally bypass kcryptd workqueues" into the 5.4 Ubuntu kernel. This patch has been merged in mainline kernel 5.9 https://github.com/torvalds/linux/commit/39d42fa96ba1b7d2544db3f8ed5da8fb0d5cb877 but was not tagged for the stable tree. This patch provides important performance gains for some workloads using dm-crypt / LUKS and cherry-picking it would be very beneficial for dm-crypt users. You can find details on the expected gain in the following links: * https://www.redhat.com/archives/dm-devel/2020-July/msg00138.html * https://blog.cloudflare.com/speeding-up-linux-disk-encryption/ The patch mostly applies cleanly on the Ubuntu 5.4 kernel, the only merge conflict is due to the module version at the end of the patch. I can provide a backport patch if needed. Thanks, To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1910976/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
