diff mbox series

[6/6] mm, hwpoison: cleanup some obsolete comments

Message ID 20220830123604.25763-7-linmiaohe@huawei.com (mailing list archive)
State New
Headers show
Series A few cleanup patches for memory-failure | expand

Commit Message

Miaohe Lin Aug. 30, 2022, 12:36 p.m. UTC 
1.Remove meaningless comment in kill_proc(). That doesn't tell anything.
2.Fix the wrong function name get_hwpoison_unless_zero(). It should be
get_page_unless_zero().
3.The gate keeper for free hwpoison page has moved to check_new_page().
Update the corresponding comment.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 mm/memory-failure.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

HORIGUCHI NAOYA(堀口 直也) Sept. 5, 2022, 5:25 a.m. UTC | #1 
On Tue, Aug 30, 2022 at 08:36:04PM +0800, Miaohe Lin wrote:
> 1.Remove meaningless comment in kill_proc(). That doesn't tell anything.
> 2.Fix the wrong function name get_hwpoison_unless_zero(). It should be
> get_page_unless_zero().
> 3.The gate keeper for free hwpoison page has moved to check_new_page().
> Update the corresponding comment.
> 
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>

Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
diff mbox series

Patch

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index fb6a10005109..df3bf266eebf 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -277,7 +277,7 @@  static int kill_proc(struct to_kill *tk, unsigned long pfn, int flags)
 		 * to SIG_IGN, but hopefully no one will do that?
 		 */
 		ret = send_sig_mceerr(BUS_MCEERR_AO, (void __user *)tk->addr,
-				      addr_lsb, t);  /* synchronous? */
+				      addr_lsb, t);
 	if (ret < 0)
 		pr_info("Error sending signal to %s:%d: %d\n",
 			t->comm, t->pid, ret);
@@ -1246,9 +1246,9 @@  static int __get_hwpoison_page(struct page *page, unsigned long flags)
 		return ret;
 
 	/*
-	 * This check prevents from calling get_hwpoison_unless_zero()
-	 * for any unsupported type of page in order to reduce the risk of
-	 * unexpected races caused by taking a page refcount.
+	 * This check prevents from calling get_page_unless_zero() for any
+	 * unsupported type of page in order to reduce the risk of unexpected
+	 * races caused by taking a page refcount.
 	 */
 	if (!HWPoisonHandlable(head, flags))
 		return -EBUSY;
@@ -2025,7 +2025,7 @@  int memory_failure(unsigned long pfn, int flags)
 	/*
 	 * We need/can do nothing about count=0 pages.
 	 * 1) it's a free page, and therefore in safe hand:
-	 *    prep_new_page() will be the gate keeper.
+	 *    check_new_page() will be the gate keeper.
 	 * 2) it's part of a non-compound high order page.
 	 *    Implies some kernel user: cannot stop them from
 	 *    R/W the page; let's pray that the page has been