Re: [PATCH v3 3/3] mm: don't panic when links can't be created in sysfs

Oscar Salvador
2020-09-15T10:33:27Z

On Tue, Sep 15, 2020 at 11:41:43AM +0200, Laurent Dufour wrote:
> At boot time, or when doing memory hot-add operations, if the links in
> sysfs can't be created, the system is still able to run, so just report the
> error in the kernel log rather than BUG_ON and potentially make system
> unusable because the callpath can be called with locks held.
>
> Since the number of memory blocks managed could be high, the messages are
> rate limited.
>
> As a consequence, link_mem_sections() has no status to report anymore.
>
> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
> Acked-by: Michal Hocko <mhocko@suse.com>
> Acked-by: David Hildenbrand <david@redhat.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Reviewed-by: Oscar Salvador <osalvador@suse.de>

--
Oscar Salvador
SUSE L3