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| author | Liam R. Howlett <Liam.Howlett@Oracle.com> | 2022-09-06 19:48:50 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-26 19:46:17 -0700 |
| commit | 94d815b2798bad12d0aec912add7665e69a48400 (patch) | |
| tree | 8f52960c765fd93232e32fc8f8b1ca8351368939 /mm/khugepaged.c | |
| parent | dc8635b25e87232f62276c02899b9d21dd0793c2 (diff) | |
| download | lwn-94d815b2798bad12d0aec912add7665e69a48400.tar.gz lwn-94d815b2798bad12d0aec912add7665e69a48400.zip | |
mm/khugepaged: optimize collapse_pte_mapped_thp() by using vma_lookup()
vma_lookup() will walk the vma tree once and not continue to look for the
next vma. Since the exact vma is checked below, this is a more optimal
way of searching.
Link: https://lkml.kernel.org/r/20220906194824.2110408-22-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Yu Zhao <yuzhao@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index dc09cfe76e1f..9ff3d39b286f 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1389,7 +1389,7 @@ static void collapse_and_free_pmd(struct mm_struct *mm, struct vm_area_struct *v void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr) { unsigned long haddr = addr & HPAGE_PMD_MASK; - struct vm_area_struct *vma = find_vma(mm, haddr); + struct vm_area_struct *vma = vma_lookup(mm, haddr); struct page *hpage; pte_t *start_pte, *pte; pmd_t *pmd; |