[PATCH v3 02/12] mm/hugetlb: Declare hugetlbfs_pagecache_present() non-static

peterx
2024-03-21T22:08:13Z

From: Peter Xu <peterx@redhat.com>

It will be used outside hugetlb.c soon.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
include/linux/hugetlb.h | 9 +++++++++
mm/hugetlb.c | 4 ++--
2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 300de33c6fde..52d9efcf1edf 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -174,6 +174,9 @@ u32 hugetlb_fault_mutex_hash(struct address_space *mapping, pgoff_t idx);

pte_t *huge_pmd_share(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, pud_t *pud);
+bool hugetlbfs_pagecache_present(struct hstate *h,
+ struct vm_area_struct *vma,
+ unsigned long address);

struct address_space *hugetlb_page_mapping_lock_write(struct page *hpage);

@@ -1197,6 +1200,12 @@ static inline void hugetlb_register_node(struct node *node)
static inline void hugetlb_unregister_node(struct node *node)
{
}
+
+static inline bool hugetlbfs_pagecache_present(
+ struct hstate *h, struct vm_area_struct *vma, unsigned long address)
+{
+ return false;
+}
#endif /* CONFIG_HUGETLB_PAGE */

static inline spinlock_t *huge_pte_lock(struct hstate *h,
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 23ef240ba48a..abec04575c89 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -6129,8 +6129,8 @@ static vm_fault_t hugetlb_wp(struct mm_struct *mm, struct vm_area_struct *vma,
/*
* Return whether there is a pagecache page to back given address within VMA.
*/
-static bool hugetlbfs_pagecache_present(struct hstate *h,
- struct vm_area_struct *vma, unsigned long address)
+bool hugetlbfs_pagecache_present(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long address)
{
struct address_space *mapping = vma->vm_file->f_mapping;
pgoff_t idx = linear_page_index(vma, address);
--
2.44.0