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mm/vmstat: correct some wrong comments

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Patch series "Cleanup for vmstat".

This series contains cleanups to remove unneeded return value, correct
wrong comment and simplify the array size calculation.  More details can
be found in the respective changelogs.

This patch (of 3):

Correct wrong fls(mem+1) to fls(mem)+1 and remove the duplicated comment
with quiet_vmstat().

Link: https://lkml.kernel.org/r/20210715122911.15700-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20210715122911.15700-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2021-09-02 15:01:03 -07:00 committed by Linus Torvalds
parent 3198145049
commit ea15ba17b4
1 changed files with 1 additions and 6 deletions
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7
mm/vmstat.c
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@ -204,7 +204,7 @@ int calculate_normal_threshold(struct zone *zone)
*
* Some sample thresholds:
*
* Threshold Processors (fls) Zonesize fls(mem+1)
* Threshold Processors (fls) Zonesize fls(mem)+1
* ------------------------------------------------------------------
* 8 1 1 0.9-1 GB 4
* 16 2 2 0.9-1 GB 4
@ -1875,11 +1875,6 @@ static void vmstat_update(struct work_struct *w)
}
}
/*
* Switch off vmstat processing and then fold all the remaining differentials
* until the diffs stay at zero. The function is used by NOHZ and can only be
* invoked when tick processing is not active.
*/
/*
* Check if the diffs for a certain cpu indicate that
* an update is needed.