[Pkg-zfsonlinux-devel] Bug#915886: NR_FILE_PAGES is present

[Ben McCann]

I checked the Linux headers and each kernel defines NR_FILE_PAGES as a
member of the node_stat_item enumeration in include/linux/mmzone.h. I'm
running on MX-17, which is derived from Debian Stable, and the headers are
in:

/usr/src/linux-headers-4.14.0-3-common

(using 4.14.0-3 as my current kernel).

So, the kernel include files appear to be correct.

As a point of reference, I still have ZFS 0.7.6 running on my primary
server and the older ZFS doesn't check for NR_FILE_PAGES at all in its
configure scripts. That's new behavior that's been introduced later and is
now in 0.7.12. (I saw the added code while grepping for NR_FILE_PAGES).
Seems like that logic is the place to look for this bug.

Please LMK if I can help run experiments or try solutions. I have the
broken ZFS 0.7.12 on a VM, also running MX-17, that I use to test major
upgrades before putting them on my main machine.

Thanks,
Ben
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