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05 April 2024, 19:05:47 UTC
Revision 13c9aaf7fa01cc7600c61981609feadeef3354ec authored by Janne Huttunen on 16 November 2018, 23:08:32 UTC, committed by Linus Torvalds on 18 November 2018, 18:15:10 UTC 
mm/vmstat.c: fix NUMA statistics updates
 
Scan through the whole array to see if an update is needed.  While we're
at it, use sizeof() to be safe against any possible type changes in the
future.

The bug here is that we wouldn't sync per-cpu counters into global ones
if there was an update of numa_stats for higher cpus.  Highly
theoretical one though because it is much more probable that zone_stats
are updated so we would refresh anyway.  So I wouldn't bother to mark
this for stable, yet something nice to fix.

[mhocko@suse.com: changelog enhancement]
Link: http://lkml.kernel.org/r/1541601517-17282-1-git-send-email-janne.huttunen@nokia.com
Fixes: 1d90ca897cb0 ("mm: update NUMA counter threshold size")
Signed-off-by: Janne Huttunen <janne.huttunen@nokia.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 7817955
History
Tip revision: 13c9aaf7fa01cc7600c61981609feadeef3354ec authored by Janne Huttunen on 16 November 2018, 23:08:32 UTC
mm/vmstat.c: fix NUMA statistics updates
Tip revision: 13c9aaf
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.clang-format -rw-r--r-- 12.7 KB
.cocciconfig -rw-r--r-- 59 bytes
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.gitignore -rw-r--r-- 1.5 KB
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