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lxc: fuse: Fill in MemAvailable for /proc/meminfo

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'free' on Fedora 23 will use MemAvailable to calculate its 'available'
field, but we are passing through the host's value. Set it to match
MemFree, which is what 'free' will do for older linux that don't have
MemAvailable

https://bugzilla.redhat.com/show_bug.cgi?id=1300781
This commit is contained in:
Cole Robinson 2016-01-21 13:18:04 -05:00
parent 8418245a7e
commit c7be484d11
1 changed files with 8 additions and 0 deletions
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8
src/lxc/lxc_fuse.c
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@ -174,6 +174,14 @@ static int lxcProcReadMeminfo(char *hostpath, virDomainDefPtr def,
virDomainDefGetMemoryActual(def))) {
virBufferAsprintf(new_meminfo, "MemFree: %8llu kB\n",
(meminfo.memtotal - meminfo.memusage));
} else if (STREQ(line, "MemAvailable") &&
(virMemoryLimitIsSet(def->mem.hard_limit) ||
virDomainDefGetMemoryActual(def))) {
/* MemAvailable is actually MemFree + SRReclaimable +
some other bits, but MemFree is the closest approximation
we have */
virBufferAsprintf(new_meminfo, "MemAvailable: %8llu kB\n",
(meminfo.memtotal - meminfo.memusage));
} else if (STREQ(line, "Buffers")) {
virBufferAsprintf(new_meminfo, "Buffers: %8d kB\n", 0);
} else if (STREQ(line, "Cached")) {