The patch titled
Subject: mm/pgtable: define pte_index so that preprocessor could recognize it
has been added to the -mm tree. Its filename is
mm-pgtable-define-pte_index-so-that-preprocessor-could-recognize-it.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-pgtable-define-pte_index-so-that-preprocessor-could-recognize-it.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-pgtable-define-pte_index-so-that-preprocessor-could-recognize-it.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: mm/pgtable: define pte_index so that preprocessor could recognize it
Since commit 974b9b2c68f3 ("mm: consolidate pte_index() and pte_offset_*()
definitions") pte_index is a static inline and there is no define for it
that can be recognized by the preprocessor. As a result,
vm_insert_pages() uses slower loop over vm_insert_page() instead of
insert_pages() that amortizes the cost of spinlock operations when
inserting multiple pages.
Link: https://lkml.kernel.org/r/20220111145457.20748-1-rppt@xxxxxxxxxx
Fixes: 974b9b2c68f3 ("mm: consolidate pte_index() and pte_offset_*() definitions")
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Reported-by: Christian Dietrich <stettberger@xxxxxxxxxxx>
Reviewed-by: Khalid Aziz <khalid.aziz@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/pgtable.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/linux/pgtable.h~mm-pgtable-define-pte_index-so-that-preprocessor-could-recognize-it
+++ a/include/linux/pgtable.h
@@ -62,6 +62,7 @@ static inline unsigned long pte_index(un
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
+#define pte_index pte_index
#ifndef pmd_index
static inline unsigned long pmd_index(unsigned long address)
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
mm-pgtable-define-pte_index-so-that-preprocessor-could-recognize-it.patch
