linux-kernel - [PATCH 1/2] fs: Clean up mapping variable

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Date:   Mon, 11 Nov 2019 16:34:51 -0800
From:   ira.weiny@...el.com
To:     Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <chao@...nel.org>,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, linux-nfs@...r.kernel.org,
        linux-mm@...ck.org, Ira Weiny <ira.weiny@...el.com>
Subject: [PATCH 1/2] fs: Clean up mapping variable

From: Ira Weiny <ira.weiny@...el.com>

The mapping variable is not directly used in these functions.  Just
remove the additional variable.

Signed-off-by: Ira Weiny <ira.weiny@...el.com>
---
 fs/f2fs/data.c      | 3 +--
 fs/iomap/swapfile.c | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index ba3bcf4c7889..3c7777bfae17 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3146,8 +3146,7 @@ int f2fs_migrate_page(struct address_space *mapping,
 /* Copied from generic_swapfile_activate() to check any holes */
 static int check_swap_activate(struct file *swap_file, unsigned int max)
 {
-	struct address_space *mapping = swap_file->f_mapping;
-	struct inode *inode = mapping->host;
+	struct inode *inode = swap_file->f_mapping->host;
 	unsigned blocks_per_page;
 	unsigned long page_no;
 	unsigned blkbits;
diff --git a/fs/iomap/swapfile.c b/fs/iomap/swapfile.c
index a648dbf6991e..80571add0180 100644
--- a/fs/iomap/swapfile.c
+++ b/fs/iomap/swapfile.c
@@ -140,8 +140,7 @@ int iomap_swapfile_activate(struct swap_info_struct *sis,
 		.sis = sis,
 		.lowest_ppage = (sector_t)-1ULL,
 	};
-	struct address_space *mapping = swap_file->f_mapping;
-	struct inode *inode = mapping->host;
+	struct inode *inode = swap_file->f_mapping->host;
 	loff_t pos = 0;
 	loff_t len = ALIGN_DOWN(i_size_read(inode), PAGE_SIZE);
 	loff_t ret;
-- 
2.20.1