linux-kernel - [PATCH 1/6] fuse: drop usage of folio

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Message-ID: <20250427185908.90450-2-ryncsn@gmail.com>
Date: Mon, 28 Apr 2025 02:59:03 +0800
From: Kairui Song <ryncsn@...il.com>
To: linux-mm@...ck.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Wilcox <willy@...radead.org>,
	David Hildenbrand <david@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Chris Li <chrisl@...nel.org>,
	Yosry Ahmed <yosryahmed@...gle.com>,
	"Huang, Ying" <ying.huang@...ux.alibaba.com>,
	Nhat Pham <nphamcs@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org,
	Kairui Song <kasong@...cent.com>,
	Miklos Szeredi <miklos@...redi.hu>,
	Joanne Koong <joannelkoong@...il.com>,
	Josef Bacik <josef@...icpanda.com>,
	linux-fsdevel@...r.kernel.org
Subject: [PATCH 1/6] fuse: drop usage of folio_index

From: Kairui Song <kasong@...cent.com>

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` and that is not supported for fuse.  So just drop it
and use folio->index instead.

uigned-off-by: Kairui Song <kasong@...cent.com>
Cc: Miklos Szeredi <miklos@...redi.hu>
Cc: Joanne Koong <joannelkoong@...il.com>
Cc: Josef Bacik <josef@...icpanda.com>
Cc: linux-fsdevel@...r.kernel.org
Signed-off-by: Kairui Song <kasong@...cent.com>
---
 fs/fuse/file.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 754378dd9f71..6f19a4daa559 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -487,7 +487,7 @@ static inline bool fuse_folio_is_writeback(struct inode *inode,
 					   struct folio *folio)
 {
 	pgoff_t last = folio_next_index(folio) - 1;
-	return fuse_range_is_writeback(inode, folio_index(folio), last);
+	return fuse_range_is_writeback(inode, folio->index, last);
 }
 
 static void fuse_wait_on_folio_writeback(struct inode *inode,
@@ -2349,7 +2349,7 @@ static bool fuse_writepage_need_send(struct fuse_conn *fc, struct folio *folio,
 		return true;
 
 	/* Discontinuity */
-	if (data->orig_folios[ap->num_folios - 1]->index + 1 != folio_index(folio))
+	if (data->orig_folios[ap->num_folios - 1]->index + 1 != folio->index)
 		return true;
 
 	/* Need to grow the pages array?  If so, did the expansion fail? */
-- 
2.49.0