[5.17] PDE_DATA() replaced by pde_data()

[satmandu]

System information

Type	Version/Name
Distribution Name	Ubuntu
Distribution Version	22.04
Kernel Version	5.17.0-051700rc1-generic
Architecture	x86_64
OpenZFS Version	2.1.2

Describe the problem you're observing

5.17-rc1 replaces PDE_DATA() with pde_data() in this commit (more info here) to avoid a clash with nubus driver.

PDE_DATA(inode) is introduced to get user private data and hide the
layout of struct proc_dir_entry. The inode->i_private is used to do
the same thing as well. Save a copy of user private data to inode->
i_private when proc inode is allocated. This means the user also can
get their private data by inode->i_private.

Introduce pde_data() to wrap inode->i_private so that we can remove
PDE_DATA() from fs/proc/generic.c and make PTE_DATE() as a wrapper
of pde_data(). It will be easier if we decide to remove PDE_DATE()
in the future.

This leads to this issue when building zfs 2.1.2 patched with #12989 and #12975:

checking whether PDE_DATA() is available... configure: error:
        *** None of the expected "PDE_DATA" interfaces were detected.
        *** This may be because your kernel version is newer than what is
        *** supported, or you are using a patched custom kernel with
        *** incompatible modifications.
        ***

[ckane]

@behlendorf - I can confirm I've also encountered this and have a setup where I can test fixes. I'll try taking a look at it this week, but let me know if you (or someone else) gets to it first.

[nabijaczleweli]

Try #13007 on for size

[satmandu]

Fixed by #13007