linux-kernel - [PATCH 7/9] mm/hugetlb: convert hugetlb_add_to_page

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Message-Id: <20230119211446.54165-8-sidhartha.kumar@oracle.com>
Date:   Thu, 19 Jan 2023 13:14:44 -0800
From:   Sidhartha Kumar <sidhartha.kumar@...cle.com>
To:     linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     akpm@...ux-foundation.org, songmuchun@...edance.com,
        mike.kravetz@...cle.com, willy@...radead.org, jhubbard@...dia.com,
        Sidhartha Kumar <sidhartha.kumar@...cle.com>
Subject: [PATCH 7/9] mm/hugetlb: convert hugetlb_add_to_page_cache to take in a folio

Every caller of hugetlb_add_to_page_cache() is now passing in
&folio->page, change the function to take in a folio directly
and clean up the call sites.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
---
 fs/hugetlbfs/inode.c    | 2 +-
 include/linux/hugetlb.h | 2 +-
 mm/hugetlb.c            | 9 ++++-----
 3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 880ebc58f330..76e146bdcba0 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -869,7 +869,7 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset,
 		}
 		clear_huge_page(&folio->page, addr, pages_per_huge_page(h));
 		__folio_mark_uptodate(folio);
-		error = hugetlb_add_to_page_cache(&folio->page, mapping, index);
+		error = hugetlb_add_to_page_cache(folio, mapping, index);
 		if (unlikely(error)) {
 			restore_reserve_on_error(h, &pseudo_vma, addr, folio);
 			folio_put(folio);
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index e76be7e8df2c..2dcae9bb4495 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -722,7 +722,7 @@ struct folio *alloc_hugetlb_folio_nodemask(struct hstate *h, int preferred_nid,
 				nodemask_t *nmask, gfp_t gfp_mask);
 struct folio *alloc_hugetlb_folio_vma(struct hstate *h, struct vm_area_struct *vma,
 				unsigned long address);
-int hugetlb_add_to_page_cache(struct page *page, struct address_space *mapping,
+int hugetlb_add_to_page_cache(struct folio *folio, struct address_space *mapping,
 			pgoff_t idx);
 void restore_reserve_on_error(struct hstate *h, struct vm_area_struct *vma,
 				unsigned long address, struct folio *folio);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 9568d49c12d6..4ab3eda6db18 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5663,10 +5663,9 @@ static bool hugetlbfs_pagecache_present(struct hstate *h,
 	return folio != NULL;
 }
 
-int hugetlb_add_to_page_cache(struct page *page, struct address_space *mapping,
+int hugetlb_add_to_page_cache(struct folio *folio, struct address_space *mapping,
 			   pgoff_t idx)
 {
-	struct folio *folio = page_folio(page);
 	struct inode *inode = mapping->host;
 	struct hstate *h = hstate_inode(inode);
 	int err;
@@ -5678,7 +5677,7 @@ int hugetlb_add_to_page_cache(struct page *page, struct address_space *mapping,
 		__folio_clear_locked(folio);
 		return err;
 	}
-	ClearHPageRestoreReserve(page);
+	folio_clear_hugetlb_restore_reserve(folio);
 
 	/*
 	 * mark folio dirty so that it will not be removed from cache/file
@@ -5837,7 +5836,7 @@ static vm_fault_t hugetlb_no_page(struct mm_struct *mm,
 		new_page = true;
 
 		if (vma->vm_flags & VM_MAYSHARE) {
-			int err = hugetlb_add_to_page_cache(&folio->page, mapping, idx);
+			int err = hugetlb_add_to_page_cache(folio, mapping, idx);
 			if (err) {
 				/*
 				 * err can't be -EEXIST which implies someone
@@ -6269,7 +6268,7 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm,
 		 * hugetlb_fault_mutex_table that here must be hold by
 		 * the caller.
 		 */
-		ret = hugetlb_add_to_page_cache(&folio->page, mapping, idx);
+		ret = hugetlb_add_to_page_cache(folio, mapping, idx);
 		if (ret)
 			goto out_release_nounlock;
 		page_in_pagecache = true;
-- 
2.39.0