From e20a7693644ebf6f8005d8cdc8c8ece49bb70253 Mon Sep 17 00:00:00 2001
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: Mon, 1 Jun 2020 21:47:27 -0700
Subject: [PATCH] f2fs: pass the inode to f2fs_mpage_readpages

This function now only uses the mapping argument to look up the inode, and
both callers already have the inode, so just pass the inode instead of the
mapping.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Gao Xiang <gaoxiang25@huawei.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Link: http://lkml.kernel.org/r/20200414150233.24495-24-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/f2fs/data.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 5b72945bf9f1..03ec97f28235 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2177,12 +2177,11 @@ out:
  * use ->readpage() or do the necessary surgery to decouple ->readpages()
  * from read-ahead.
  */
-static int f2fs_mpage_readpages(struct address_space *mapping,
+static int f2fs_mpage_readpages(struct inode *inode,
 		struct readahead_control *rac, struct page *page)
 {
 	struct bio *bio = NULL;
 	sector_t last_block_in_bio = 0;
-	struct inode *inode = mapping->host;
 	struct f2fs_map_blocks map;
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 	struct compress_ctx cc = {
@@ -2294,7 +2293,7 @@ static int f2fs_read_data_page(struct file *file, struct page *page)
 	if (f2fs_has_inline_data(inode))
 		ret = f2fs_read_inline_data(inode, page);
 	if (ret == -EAGAIN)
-		ret = f2fs_mpage_readpages(page_file_mapping(page), NULL, page);
+		ret = f2fs_mpage_readpages(inode, NULL, page);
 	return ret;
 }
 
@@ -2311,7 +2310,7 @@ static void f2fs_readahead(struct readahead_control *rac)
 	if (f2fs_has_inline_data(inode))
 		return;
 
-	f2fs_mpage_readpages(rac->mapping, rac, NULL);
+	f2fs_mpage_readpages(inode, rac, NULL);
 }
 
 int f2fs_encrypt_one_page(struct f2fs_io_info *fio)