From: Charles Haithcock <chaithco@xxxxxxxxxx> Subject: mm, oom: keep oom_adj under or at upper limit when printing For oom_score_adj values in the range [942,999], the current calculations will print 16 for oom_adj. This patch simply limits the output so output is inline with docs. Link: https://lkml.kernel.org/r/20201020165130.33927-1-chaithco@xxxxxxxxxx Signed-off-by: Charles Haithcock <chaithco@xxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/proc/base.c | 2 ++ 1 file changed, 2 insertions(+) --- a/fs/proc/base.c~mm-oom-keep-oom_adj-under-or-at-upper-limit-when-printing +++ a/fs/proc/base.c @@ -1049,6 +1049,8 @@ static ssize_t oom_adj_read(struct file oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) / OOM_SCORE_ADJ_MAX; put_task_struct(task); + if (oom_adj > OOM_ADJUST_MAX) + oom_adj = OOM_ADJUST_MAX; len = snprintf(buffer, sizeof(buffer), "%d\n", oom_adj); return simple_read_from_buffer(buf, count, ppos, buffer, len); } _
