[dm-devel] [PATCH RESEND v6 3/9] mm: factor helpers for memory_failure_dev_pagemap
Jane Chu
jane.chu at oracle.com
Fri Aug 6 01:00:52 UTC 2021
On 7/30/2021 3:01 AM, Shiyang Ruan wrote:
> - /*
> - * Prevent the inode from being freed while we are interrogating
> - * the address_space, typically this would be handled by
> - * lock_page(), but dax pages do not use the page lock. This
> - * also prevents changes to the mapping of this pfn until
> - * poison signaling is complete.
> - */
> - cookie = dax_lock_page(page);
> - if (!cookie)
> - goto out;
> -
> if (hwpoison_filter(page)) {
> rc = 0;
> - goto unlock;
> + goto out;
> }
why isn't dax_lock_page() needed for hwpoison_filter() check?
thanks,
-jane
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