[LU-2850] Client support for upstream 3.8 kernel

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.5.0, Lustre 2.6.0
• Affects Version/s: Lustre 2.5.0
• Labels: emc patch
• Assignee: Yang Sheng
• Reporter: Peng Tao

Description

Update client code to support upstream 3.8 kernel.

Issue Links

• is related to: LU-2686 Kernel update for 3.7.2-201.fc18

Comments

[James A Simmons]

Peter can you label this as a 2.5 item

[Peter Jones]

Alexey

2.4.0 is frozen now. This work will land in later releases

Peter

[Alexey Shvetsov (Inactive)]

Are there plans to land all this patches before 2.4.0 release? Or they will be postponed to 2.4.x or 2.5.x?

[Alexey Shvetsov (Inactive)]

BTW for 3.9 kernel support. Patches may be simplyfyed if stuff for ancient kernels (<2.6.32) will be cleaned up. See LU-2800

[Yang Sheng]

I tend to waiting patches landed and then rebase lu-3079.

[James A Simmons]

I noticed that the 5655 patch is not dependent on any other patches. This is fine but I noticed the patches in LU-3079 don't apply cleanly due to the other patches here. Should we just want until a few patches land then rebase the patches in LU-3079 again or make 5655 dependent on the rest of the series in this ticket?

[Peng Tao]

James, please upload it. It helps avoiding dup efforts. Thanks.

Yang, sorry for not including you in the first place. Will add you as inspector in all my future kernel support patches.

[James A Simmons]

I have a update rebased for 5655 if you want me to upload it.

[Alexey Shvetsov (Inactive)]

Seems current list are for kernel v3.8
http://review.whamcloud.com/4649
http://review.whamcloud.com/5973
http://review.whamcloud.com/5974
http://review.whamcloud.com/5768
http://review.whamcloud.com/5781
http://review.whamcloud.com/5763
http://review.whamcloud.com/5613
http://review.whamcloud.com/5655
Last one need a rebase it conflicts with current master and this patches

LU-2850 kernel: 3.8 upstream kills daemonize()

kernel_thread() is a low level kernel function.
Instead of calling kernel_thread() and relying on daemonize()
to create new kernel threads, we should really switch to
kthread_run() and elimilate daemonize().

Conflicts:
libcfs/autoconf/lustre-libcfs.m4
lustre/mdd/mdd_lfsck.c
lustre/obdclass/llog_cat.c
lustre/ptlrpc/recov_thread.c

Also patches that good to have in 2.4 are
http://review.whamcloud.com/6064 <- fix compilation with gcc-4.7.x gcc-4.8.x
http://review.whamcloud.com/5960 <- fix for zfs-0.6.1
http://review.whamcloud.com/5751 <- possible fix for sandbox enabled build systems

[Yang Sheng]

Oops, Please give me a chance be a inspector for kernel update relate patches. So avoid dup efforts. Thanks.

[Yang Sheng]

http://review.whamcloud.com/6114