[109/227] mm/memory-failure.c: remove obsolete comment

Commit Message

Andrew Morton March 22, 2022, 9:44 p.m. UTC

From: Naoya Horiguchi <[e-mail]>
Subject: mm/memory-failure.c: remove obsolete comment

With the introduction of mf_mutex, most of memory error handling process
is mutually exclusive, so the in-line comment about subtlety about
double-checking PageHWPoison is no more correct.  So remove it.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Naoya Horiguchi <[e-mail]>
Suggested-by: Mike Kravetz <[e-mail]>
Reviewed-by: Miaohe Lin <[e-mail]>
Reviewed-by: Anshuman Khandual <[e-mail]>
Reviewed-by: Oscar Salvador <[e-mail]>
Reviewed-by: Yang Shi <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/memory-failure.c |    6 ------
 1 file changed, 6 deletions(-)

Patch

--- a/mm/memory-failure.c~mm-hwpoison-remove-obsolete-comment
+++ a/mm/memory-failure.c
@@ -2150,12 +2150,6 @@  static int __soft_offline_page(struct pa
 		.gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL,
 	};
 
-	/*
-	 * Check PageHWPoison again inside page lock because PageHWPoison
-	 * is set by memory_failure() outside page lock. Note that
-	 * memory_failure() also double-checks PageHWPoison inside page lock,
-	 * so there's no race between soft_offline_page() and memory_failure().
-	 */
 	lock_page(page);
 	if (!PageHuge(page))
 		wait_on_page_writeback(page);