| Message ID | 20220127023204.YhI-sD-TA%akpm@linux-foundation.org |
|---|---|
| State | New |
| Headers | show |
| Series | + mm-pgtable-define-pte_index-so-that-preprocessor-could-recognize-it.patch added to -mm tree | expand |
--- 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)
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@linux.ibm.com> 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@kernel.org Fixes: 974b9b2c68f3 ("mm: consolidate pte_index() and pte_offset_*() definitions") Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reported-by: Christian Dietrich <stettberger@dokucode.de> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/pgtable.h | 1 + 1 file changed, 1 insertion(+)