| Message ID | 20240221234732.187629-2-vishal.moola@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Handle hugetlb faults under the VMA lock | expand |
On Wed, Feb 21, 2024 at 03:47:28PM -0800, Vishal Moola (Oracle) wrote: > In order to handle hugetlb faults under the VMA lock, hugetlb can use > vmf_anon_prepare() to ensure we can safely prepare an anon_vma. Change > it to be a non-static function so it can be used within hugetlb as well. > > Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
diff --git a/mm/internal.h b/mm/internal.h index f309a010d50f..b9b6b2bc1663 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -103,6 +103,7 @@ static inline void wake_throttle_isolated(pg_data_t *pgdat) wake_up(wqh); } +vm_fault_t vmf_anon_prepare(struct vm_fault *vmf); vm_fault_t do_swap_page(struct vm_fault *vmf); void folio_rotate_reclaimable(struct folio *folio); bool __folio_end_writeback(struct folio *folio); diff --git a/mm/memory.c b/mm/memory.c index 89bcae0b224d..c93b058adfb2 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3081,7 +3081,7 @@ static inline vm_fault_t vmf_can_call_fault(const struct vm_fault *vmf) return VM_FAULT_RETRY; } -static vm_fault_t vmf_anon_prepare(struct vm_fault *vmf) +vm_fault_t vmf_anon_prepare(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma;
In order to handle hugetlb faults under the VMA lock, hugetlb can use vmf_anon_prepare() to ensure we can safely prepare an anon_vma. Change it to be a non-static function so it can be used within hugetlb as well. Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> --- mm/internal.h | 1 + mm/memory.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)