The patch titled
Subject: mm: remove redundant check non_swap_entry()
has been added to the -mm tree. Its filename is
mm-remove-redundant-check-non_swap_entry.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-remove-redundant-check-non_swap_entry.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-remove-redundant-check-non_swap_entry.patch
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------------------------------------------------------
From: Ralph Campbell <rcampbell@xxxxxxxxxx>
Subject: mm: remove redundant check non_swap_entry()
In zap_pte_range(), the check for non_swap_entry() and
is_device_private_entry() is unnecessary since the latter is sufficient to
determine if the page is a device private page. Remove the test for
non_swap_entry() to simplify the code and for clarity.
Link: http://lkml.kernel.org/r/20200615175405.4613-1-rcampbell@xxxxxxxxxx
Signed-off-by: Ralph Campbell <rcampbell@xxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory.c~mm-remove-redundant-check-non_swap_entry
+++ a/mm/memory.c
@@ -1098,7 +1098,7 @@ again:
}
entry = pte_to_swp_entry(ptent);
- if (non_swap_entry(entry) && is_device_private_entry(entry)) {
+ if (is_device_private_entry(entry)) {
struct page *page = device_private_entry_to_page(entry);
if (unlikely(details && details->check_mapping)) {
_
Patches currently in -mm which might be from rcampbell@xxxxxxxxxx are
mm-remove-redundant-check-non_swap_entry.patch
