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

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