Backport of https://bugzilla.redhat.com/show_bug.cgi?id=1379769 fix for 3.9 branch.
REVIEW: http://review.gluster.org/15622 (glusterfsd/main: fix OOM adjustment for older kernels) posted (#1) for review on release-3.9 by Oleksandr Natalenko (oleksandr)
COMMIT: http://review.gluster.org/15622 committed in release-3.9 by Kaleb KEITHLEY (kkeithle) ------ commit c7ee2362255cbc305728f1b116a3ad9b7a68a0e1 Author: Oleksandr Natalenko <onatalen> Date: Wed Sep 28 14:29:23 2016 +0200 glusterfsd/main: fix OOM adjustment for older kernels Milind Changire reported that GlusterFS fails to build on RHEL5 because linux/oom.h is unavailable. Milind's initial patch disables OOM adjustment completely for those environments that do not have this header. However, I'd take another approach that: 1) checks for linux/oom.h in compile-time and defines necessary constants if the header is not present; 2) checks for available OOM API in /proc in run-time and uses it accordingly. This allows OOM to be adjusted properly on RHEL5 (the kernel is pretty new to present /proc API for that) as well as RHEL6 (the kernel has many thing backported including new /proc API). > Reviewed-on: http://review.gluster.org/15587 > Smoke: Gluster Build System <jenkins.org> > CentOS-regression: Gluster Build System <jenkins.org> > NetBSD-regression: NetBSD Build System <jenkins.org> > Reviewed-by: Niels de Vos <ndevos> > Tested-by: Oleksandr Natalenko <oleksandr> Change-Id: I1bc610586872d208430575c149a7d0c54bd82370 BUG: 1383692 Signed-off-by: Oleksandr Natalenko <onatalen> Reviewed-on: http://review.gluster.org/15622 Tested-by: Oleksandr Natalenko <oleksandr> Smoke: Gluster Build System <jenkins.org> NetBSD-regression: NetBSD Build System <jenkins.org> CentOS-regression: Gluster Build System <jenkins.org> Reviewed-by: Niels de Vos <ndevos>