The quilt patch titled
Subject: mm: memory-failure: enhance comments for return value of memory_failure()
has been removed from the -mm tree. Its filename was
mm-memory-failure-enhance-comments-for-return-value-of-memory_failure.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Shuai Xue <xueshuai@xxxxxxxxxxxxxxxxx>
Subject: mm: memory-failure: enhance comments for return value of memory_failure()
Date: Wed, 12 Mar 2025 19:28:52 +0800
The comments for the return value of memory_failure are not complete,
supplement the comments.
Link: https://lkml.kernel.org/r/20250312112852.82415-4-xueshuai@xxxxxxxxxxxxxxxxx
Signed-off-by: Shuai Xue <xueshuai@xxxxxxxxxxxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Reviewed-by: Yazen Ghannam <yazen.ghannam@xxxxxxx>
Reviewed-by: Jane Chu <jane.chu@xxxxxxxxxx>
Acked-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Tested-by: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Cc: Borislav Betkov <bp@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Naoya Horiguchi <nao.horiguchi@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ruidong Tian <tianruidong@xxxxxxxxxxxxxxxxx>
Cc: Thomas Gleinxer <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/mm/memory-failure.c~mm-memory-failure-enhance-comments-for-return-value-of-memory_failure
+++ a/mm/memory-failure.c
@@ -2215,9 +2215,13 @@ static void kill_procs_now(struct page *
* Must run in process context (e.g. a work queue) with interrupts
* enabled and no spinlocks held.
*
- * Return: 0 for successfully handled the memory error,
- * -EOPNOTSUPP for hwpoison_filter() filtered the error event,
- * < 0(except -EOPNOTSUPP) on failure.
+ * Return:
+ * 0 - success,
+ * -ENXIO - memory not managed by the kernel
+ * -EOPNOTSUPP - hwpoison_filter() filtered the error event,
+ * -EHWPOISON - the page was already poisoned, potentially
+ * kill process,
+ * other negative values - failure.
*/
int memory_failure(unsigned long pfn, int flags)
{
_
Patches currently in -mm which might be from xueshuai@xxxxxxxxxxxxxxxxx are
