> On 2 Jan 2018, at 9:06 PM, Vasya Pupkin <1740...@bugs.launchpad.net> wrote: > >> Apparently the original patch didn’t send for linux stable branch. > > I don't know exactly what you mean, but 4.14 kernel has this patch. It's > easy to verify by changed messages ("enabling ssd optimizations" vs > "enabling SSD mode”).
It doesn’t have “Cc: sta...@vger.kernel.org <mailto:sta...@vger.kernel.org>”. Generally important fixes will also send to the stable mailing list, so Linux stable (4.4, 4.9 and 4.14 in this context) can pull it in. > >> can you ask the patch author and BTRFS maintainers > > I'm not sure how to ask BTRFS maintainers and why I would do so, because > patch description suggests that it should be backported and has notes > about it: > > Backporting notes > > Notes for whoever wants to backport this patch to their 4.9 LTS kernel: > * First apply commit 951e796 "btrfs: drop the nossd flag when > remounting with -o ssd", or fixup the differences manually. > * The rest of the conflicts are because of the fs_info refactoring. So, > for example, instead of using fs_info, it's root->fs_info in > extent-tree.c I am not a native english speaker, but from what I can understand, it’s more like a caveat instead of a recommendation. > > -- > You received this bug notification because you are subscribed to linux > in Ubuntu. > https://bugs.launchpad.net/bugs/1740143 > > Title: > backport btrfs ssd mount option fix > > Status in linux package in Ubuntu: > Confirmed > > Bug description: > Hello, > > It appears that all kernels before 4.14 had a problem with btrfs ssd > mount option. According to > https://btrfs.wiki.kernel.org/index.php/Gotchas#ssd_mount_option, it > has a negative impact on usability and lifetime of modern SSDs. Since > it is enabled by default when SSD is detected, it affects all systems > with SSD drives. Please backport this commit to normal and HWE > kernels: > > https://github.com/torvalds/linux/commit/583b723151794e2ff1691f1510b4e43710293875 > > ProblemType: Bug > DistroRelease: Ubuntu 16.04 > Package: linux-image-generic 126.96.36.199.109 > ProcVersionSignature: Ubuntu 4.4.0-104.127-generic 4.4.98 > Uname: Linux 4.4.0-104-generic x86_64 > AlsaDevices: > total 0 > crw-rw---- 1 root audio 116, 1 дек 17 10:50 seq > crw-rw---- 1 root audio 116, 33 дек 17 10:50 timer > AlsaVersion: Advanced Linux Sound Architecture Driver Version > k4.4.0-104-generic. > AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' > ApportVersion: 2.20.1-0ubuntu2.14 > Architecture: amd64 > ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' > AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', > '/dev/snd/timer'] failed with exit code 1: > CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read > kernel buffer failed: Operation not permitted > Date: Tue Dec 26 18:57:10 2017 > InstallationDate: Installed on 2011-04-14 (2448 days ago) > InstallationMedia: Ubuntu-Server 10.04.2 LTS "Lucid Lynx" - Release amd64 > (20110211.1) > MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. > PciMultimedia: > > ProcFB: 0 nouveaufb > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-104-generic > root=UUID=c7605446-0bf3-11e7-bfa0-f91abd974ce1 ro quiet bootdegraded=true > RelatedPackageVersions: > linux-restricted-modules-4.4.0-104-generic N/A > linux-backports-modules-4.4.0-104-generic N/A > linux-firmware 1.157.14 > RfKill: Error: [Errno 2] No such file or directory: 'rfkill' > SourcePackage: linux > UpgradeStatus: Upgraded to xenial on 2016-07-30 (513 days ago) > WifiSyslog: > > dmi.bios.date: 02/20/2008 > dmi.bios.vendor: American Megatrends Inc. > dmi.bios.version: P1.40 > dmi.board.name: 4Core1333-eSATA2. > dmi.chassis.asset.tag: To Be Filled By O.E.M. > dmi.chassis.type: 3 > dmi.chassis.vendor: To Be Filled By O.E.M. > dmi.chassis.version: To Be Filled By O.E.M. > dmi.modalias: > dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd02/20/2008:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvn:rn4Core1333-eSATA2.:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: > dmi.product.name: To Be Filled By O.E.M. > dmi.product.version: To Be Filled By O.E.M. > dmi.sys.vendor: To Be Filled By O.E.M. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1740143/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1740143 Title: backport btrfs ssd mount option fix To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1740143/+subscriptions -- ubuntu-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs