The patch titled
Subject: mm/memory-failure: unnecessary amount of unmapping
has been removed from the -mm tree. Its filename was
mm-memory-failure-unecessary-amount-of-unmapping.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Jane Chu <jane.chu@xxxxxxxxxx>
Subject: mm/memory-failure: unnecessary amount of unmapping
It appears that unmap_mapping_range() actually takes a 'size' as its third
argument rather than a location, the current calling fashion causes
unnecessary amount of unmapping to occur.
Link: https://lkml.kernel.org/r/20210420002821.2749748-1-jane.chu@xxxxxxxxxx
Fixes: 6100e34b2526e ("mm, memory_failure: Teach memory_failure() about dev_pagemap pages")
Signed-off-by: Jane Chu <jane.chu@xxxxxxxxxx>
Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory-failure.c~mm-memory-failure-unecessary-amount-of-unmapping
+++ a/mm/memory-failure.c
@@ -1368,7 +1368,7 @@ static int memory_failure_dev_pagemap(un
* communicated in siginfo, see kill_proc()
*/
start = (page->index << PAGE_SHIFT) & ~(size - 1);
- unmap_mapping_range(page->mapping, start, start + size, 0);
+ unmap_mapping_range(page->mapping, start, size, 0);
}
kill_procs(&tokill, flags & MF_MUST_KILL, !unmap_success, pfn, flags);
rc = 0;
_
Patches currently in -mm which might be from jane.chu@xxxxxxxxxx are
