linux-kernel - [RFC PATCH 11/39] mm: hugetlb: Expose hugetlb_acct

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Message-ID: <3b49aeaa7ec0a91f601cde00b9e183bc75dc37a6.1726009989.git.ackerleytng@google.com>
Date: Tue, 10 Sep 2024 23:43:42 +0000
From: Ackerley Tng <ackerleytng@...gle.com>
To: tabba@...gle.com, quic_eberman@...cinc.com, roypat@...zon.co.uk, 
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Subject: [RFC PATCH 11/39] mm: hugetlb: Expose hugetlb_acct_memory()

This will used by guest_memfd in a later patch.

Signed-off-by: Ackerley Tng <ackerleytng@...gle.com>
---
 include/linux/hugetlb.h | 2 ++
 mm/hugetlb.c            | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 9ef1adbd3207..4d47bf94c211 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -122,6 +122,8 @@ void hugepage_put_subpool(struct hugepage_subpool *spool);
 long hugepage_subpool_get_pages(struct hugepage_subpool *spool, long delta);
 long hugepage_subpool_put_pages(struct hugepage_subpool *spool, long delta);
 
+int hugetlb_acct_memory(struct hstate *h, long delta);
+
 void hugetlb_dup_vma_private(struct vm_area_struct *vma);
 void clear_vma_resv_huge_pages(struct vm_area_struct *vma);
 int move_hugetlb_page_tables(struct vm_area_struct *vma,
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index efdb5772b367..5a37b03e1361 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -93,7 +93,7 @@ struct mutex *hugetlb_fault_mutex_table ____cacheline_aligned_in_smp;
 
 /* Forward declaration */
 static int __hugetlb_acct_memory(struct hstate *h, long delta, bool use_surplus);
-static int hugetlb_acct_memory(struct hstate *h, long delta);
+int hugetlb_acct_memory(struct hstate *h, long delta);
 static void hugetlb_vma_lock_free(struct vm_area_struct *vma);
 static void hugetlb_vma_lock_alloc(struct vm_area_struct *vma);
 static void __hugetlb_vma_unlock_write_free(struct vm_area_struct *vma);
@@ -5170,7 +5170,7 @@ static int __hugetlb_acct_memory(struct hstate *h, long delta, bool use_surplus)
 	return ret;
 }
 
-static int hugetlb_acct_memory(struct hstate *h, long delta)
+int hugetlb_acct_memory(struct hstate *h, long delta)
 {
 	return __hugetlb_acct_memory(h, delta, true);
 }
-- 
2.46.0.598.g6f2099f65c-goog