NVIDIA kernel module don't compile after Ubuntu15.04 update - build/nv.c:1809:29: error: ‘struct file’ has no member named ‘f_dentry’

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== Comment: #0 - Christoph Hagleitner <email address hidden> - 2015-07-08 08:54:28 ==
---Problem Description---
After an upgrade of Ubuntu 15.04, the re-compile of the nvidia kernel modules failed (likely due to a missing struct f_dentry) failed ... the log is attached

Contact Information = Christoph Hagleitner, <email address hidden>

---uname output---
Linux julier 3.19.0-22-generic #22-Ubuntu SMP Tue Jun 16 17:15:17 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux

---Additional Hardware Info---
NVIDIA K40 accelerator cards

Machine Type = Power8 S824

---Debugger---
A debugger is not configured

---Steps to Reproduce---
 Install older version of Ubuntu 15.04, then install the cuda 7.0 drivers and then run "apt-get dist-upgrade ...).

Stack trace output:
 no

Oops output:
 no

System Dump Info:
  The system is not configured to capture a system dump.

*Additional Instructions for Christoph Hagleitner, <email address hidden>:
-Attach sysctl -a output output to the bug.

== Comment: #1 - Christoph Hagleitner <email address hidden> - 2015-07-08 08:55:39 ==

== Comment: #2 - SANDHYA VENUGOPALA <email address hidden> - 2015-07-09 00:59:00 ==
For the build problem -
var/lib/dkms/nvidia-346/346.29/build/nv.c
/var/lib/dkms/nvidia-346/346.29/build/nv.c: In function ?nvidia_unlocked_ioctl?:
/var/lib/dkms/nvidia-346/346.29/build/nv.c:1809:29: error: ?struct file? has no member named ?f_dentry?
     return nvidia_ioctl(file->f_dentry->d_inode, file, cmd, i_arg);
                             ^
scripts/Makefile.build:257: recipe for target '/var/lib/dkms/nvidia-346/346.29/build/nv.o' failed
make[2]: *** [/var/lib/dkms/nvidia-346/346.29/build/nv.o] Error 1

NVIDIA will need to update the driver to match the kernel change.

Perhaps they could make use of the file_inode() helper introduced by kernel commit 496ad9aa8ef448058e36ca7a787c61f2e63f0f54

Source is provided for nv.c, so you could work around by making the change locally.

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Default Comment by Bridge

[Ubuntu Foundations Team Bug Bot (crichton)]

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[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1409190, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

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------- Comment on attachment From <email address hidden> 2015-07-10 08:21 EDT-------

added on request