diff options
| author | Jane Chu <jane.chu@oracle.com> | 2021-04-30 09:02:19 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 21:20:44 +0300 |
| commit | 4d75136be8bf3ae01b0bc3e725b2cdc921e103bd (patch) | |
| tree | 92f09dfdc01b4473a6114f6c0b0b5aa03b43d177 /mm | |
| parent | 198fba4137a1803a9cb93992b56c2ecba1aa83a3 (diff) | |
| download | linux-4d75136be8bf3ae01b0bc3e725b2cdc921e103bd.tar.xz | |
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@oracle.com
Fixes: 6100e34b2526e ("mm, memory_failure: Teach memory_failure() about dev_pagemap pages")
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory-failure.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 24210c9bd843..bd3945446d47 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1368,7 +1368,7 @@ static int memory_failure_dev_pagemap(unsigned long pfn, int flags, * 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; |