linux-kernel - [PATCH v2] f2fs: remove codes of unused wio

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Date:   Wed, 12 Dec 2018 11:50:20 +0800
From:   Yunlong Song <yunlong.song@...wei.com>
To:     <jaegeuk@...nel.org>, <chao@...nel.org>, <yuchao0@...wei.com>,
        <yunlong.song@...oud.com>, <yunlong.song@...wei.com>
CC:     <miaoxie@...wei.com>, <bintian.wang@...wei.com>,
        <shengyong1@...wei.com>, <heyunlei@...wei.com>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] f2fs: remove codes of unused wio_mutex

v1->v2: delete comments in f2fs.h: "/* bio ordering for NODE/DATA */"

Signed-off-by: Yunlong Song <yunlong.song@...wei.com>
Reviewed-by: Chao Yu <yuchao0@...wei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/f2fs.h  | 2 --
 fs/f2fs/super.c | 5 +----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 1e03197..195850e 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1170,8 +1170,6 @@ struct f2fs_sb_info {
 
 	/* for bio operations */
 	struct f2fs_bio_info *write_io[NR_PAGE_TYPE];	/* for write bios */
-	struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
-						/* bio ordering for NODE/DATA */
 	/* keep migration IO order for LFS mode */
 	struct rw_semaphore io_order_lock;
 	mempool_t *write_io_dummy;		/* Dummy pages */
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index af58b2c..2d18de5 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2674,7 +2674,7 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 static void init_sb_info(struct f2fs_sb_info *sbi)
 {
 	struct f2fs_super_block *raw_super = sbi->raw_super;
-	int i, j;
+	int i;
 
 	sbi->log_sectors_per_block =
 		le32_to_cpu(raw_super->log_sectors_per_block);
@@ -2710,9 +2710,6 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
 
 	INIT_LIST_HEAD(&sbi->s_list);
 	mutex_init(&sbi->umount_mutex);
-	for (i = 0; i < NR_PAGE_TYPE - 1; i++)
-		for (j = HOT; j < NR_TEMP_TYPE; j++)
-			mutex_init(&sbi->wio_mutex[i][j]);
 	init_rwsem(&sbi->io_order_lock);
 	spin_lock_init(&sbi->cp_lock);
 
-- 
1.8.5.2