diff mbox series

[v2,1/5] mm/memory: Change vmf_anon_prepare() to be non-static

Message ID 20240221234732.187629-2-vishal.moola@gmail.com
State New
Headers
Series Handle hugetlb faults under the VMA lock |

Commit Message

Vishal Moola Feb. 21, 2024, 11:47 p.m. UTC 
  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(-)

Comments

Matthew Wilcox Feb. 22, 2024, 3:31 a.m. UTC | #1 
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 mbox series

Patch

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;