| Message ID | 20240122194200.381241-9-david@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | mm/memory: optimize fork() with PTE-mapped THP | expand |
On 22/01/2024 19:41, David Hildenbrand wrote: > We already read it, let's just forward it. > > This patch is based on work by Ryan Roberts. > > Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> > --- > mm/memory.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/mm/memory.c b/mm/memory.c > index 2aa2051ee51d3..185b4aff13d62 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -959,10 +959,9 @@ static inline void __copy_present_pte(struct vm_area_struct *dst_vma, > */ > static inline int > copy_present_pte(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma, > - pte_t *dst_pte, pte_t *src_pte, unsigned long addr, int *rss, > - struct folio **prealloc) > + pte_t *dst_pte, pte_t *src_pte, pte_t pte, unsigned long addr, > + int *rss, struct folio **prealloc) > { > - pte_t pte = ptep_get(src_pte); > struct page *page; > struct folio *folio; > > @@ -1104,7 +1103,7 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma, > } > /* copy_present_pte() will clear `*prealloc' if consumed */ > ret = copy_present_pte(dst_vma, src_vma, dst_pte, src_pte, > - addr, rss, &prealloc); > + ptent, addr, rss, &prealloc); > /* > * If we need a pre-allocated page for this pte, drop the > * locks, allocate, and try again.
diff --git a/mm/memory.c b/mm/memory.c index 2aa2051ee51d3..185b4aff13d62 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -959,10 +959,9 @@ static inline void __copy_present_pte(struct vm_area_struct *dst_vma, */ static inline int copy_present_pte(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma, - pte_t *dst_pte, pte_t *src_pte, unsigned long addr, int *rss, - struct folio **prealloc) + pte_t *dst_pte, pte_t *src_pte, pte_t pte, unsigned long addr, + int *rss, struct folio **prealloc) { - pte_t pte = ptep_get(src_pte); struct page *page; struct folio *folio; @@ -1104,7 +1103,7 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma, } /* copy_present_pte() will clear `*prealloc' if consumed */ ret = copy_present_pte(dst_vma, src_vma, dst_pte, src_pte, - addr, rss, &prealloc); + ptent, addr, rss, &prealloc); /* * If we need a pre-allocated page for this pte, drop the * locks, allocate, and try again.
We already read it, let's just forward it. This patch is based on work by Ryan Roberts. Signed-off-by: David Hildenbrand <david@redhat.com> --- mm/memory.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)