patches/old/f2fs-drop-usage-of-folio_index.patch

From: Kairui Song <kasong@tencent.com>
Subject: f2fs: drop usage of folio_index
Date: Thu, 1 May 2025 02:10:49 +0800

folio_index is only needed for mixed usage of page cache and swap cache,
for pure page cache usage, the caller can just use folio->index instead.

It can't be a swap cache folio here.  Swap mapping may only call into fs
through `swap_rw` but f2fs does not use that method for swap.

Link: https://lkml.kernel.org/r/20250430181052.55698-4-ryncsn@gmail.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Chris Li <chrisl@kernel.org>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Sterba <dsterba@suse.com>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joanne Koong <joannelkoong@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Qu Wenruo <wqu@suse.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/f2fs/data.c   |    4 ++--
 fs/f2fs/inline.c |    4 ++--
 fs/f2fs/super.c  |    2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

--- a/fs/f2fs/data.c~f2fs-drop-usage-of-folio_index
+++ a/fs/f2fs/data.c
@@ -2077,7 +2077,7 @@ static int f2fs_read_single_page(struct
 	sector_t last_block;
 	sector_t last_block_in_file;
 	sector_t block_nr;
-	pgoff_t index = folio_index(folio);
+	pgoff_t index = folio->index;
 	int ret = 0;
 
 	block_in_file = (sector_t)index;
@@ -2392,7 +2392,7 @@ static int f2fs_mpage_readpages(struct i
 		}
 
 #ifdef CONFIG_F2FS_FS_COMPRESSION
-		index = folio_index(folio);
+		index = folio->index;
 
 		if (!f2fs_compressed_file(inode))
 			goto read_single_page;
--- a/fs/f2fs/inline.c~f2fs-drop-usage-of-folio_index
+++ a/fs/f2fs/inline.c
@@ -86,7 +86,7 @@ void f2fs_do_read_inline_data(struct fol
 	if (folio_test_uptodate(folio))
 		return;
 
-	f2fs_bug_on(F2FS_I_SB(inode), folio_index(folio));
+	f2fs_bug_on(F2FS_I_SB(inode), folio->index);
 
 	folio_zero_segment(folio, MAX_INLINE_DATA(inode), folio_size(folio));
 
@@ -130,7 +130,7 @@ int f2fs_read_inline_data(struct inode *
 		return -EAGAIN;
 	}
 
-	if (folio_index(folio))
+	if (folio->index)
 		folio_zero_segment(folio, 0, folio_size(folio));
 	else
 		f2fs_do_read_inline_data(folio, ipage);
--- a/fs/f2fs/super.c~f2fs-drop-usage-of-folio_index
+++ a/fs/f2fs/super.c
@@ -3432,7 +3432,7 @@ static int __f2fs_commit_super(struct f2
 	bio = bio_alloc(sbi->sb->s_bdev, 1, opf, GFP_NOFS);
 
 	/* it doesn't need to set crypto context for superblock update */
-	bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(folio_index(folio));
+	bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(folio->index);
 
 	if (!bio_add_folio(bio, folio, folio_size(folio), 0))
 		f2fs_bug_on(sbi, 1);
_