Re: [PATCH] mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again

[Yuanyuan Zhong <yzhong@xxxxxxxxxxxxxxx>]

On Thu, May 23, 2024 at 11:56 AM Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> Please describe the userspace-visible runtime effects of this bug.
> This aids others in deciding which kernel version(s) need the patch.
>
Otherwise, with some VMAs skipped, userspace observed memory consumption
from /proc/pid/smaps_rollup will be smaller than the sum of the
corresponding fields from /proc/pid/smaps.

Please let me know if separate v2 is needed. Thanks