Re: [PATCH] mm: fix potential pte_unmap_unlock pte error

[osalvador]

On 2020-10-16 14:31, Michal Hocko wrote:

I do not like the fix though. The code is really confusing. Why should
we check for flags in each iteration of the loop when it cannot change?

Also why should we take the ptl lock in the first place when the look is

broken out immediately?

About checking the flags:

https://lore.kernel.org/linux-mm/20190320081643.3c4m5tec5vx65...@d104.suse.de/#t