linux-kernel - [PATCH -next] gfs2: convert to use DEFINE_SEQ

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Date:   Wed, 16 Sep 2020 10:50:21 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Bob Peterson <rpeterso@...hat.com>,
        Andreas Gruenbacher <agruenba@...hat.com>
CC:     <cluster-devel@...hat.com>, <linux-kernel@...r.kernel.org>,
        Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH -next] gfs2: convert to use DEFINE_SEQ_ATTRIBUTE macro

Use DEFINE_SEQ_ATTRIBUTE macro to simplify the code.

Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
 fs/gfs2/glock.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index f13b136654ca..15c5c26f6ae7 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -2415,7 +2415,7 @@ static const struct seq_operations gfs2_glstats_seq_ops = {
 	.show  = gfs2_glstats_seq_show,
 };
 
-static const struct seq_operations gfs2_sbstats_seq_ops = {
+static const struct seq_operations gfs2_sbstats_sops = {
 	.start = gfs2_sbstats_seq_start,
 	.next  = gfs2_sbstats_seq_next,
 	.stop  = gfs2_sbstats_seq_stop,
@@ -2468,16 +2468,6 @@ static int gfs2_glstats_open(struct inode *inode, struct file *file)
 	return __gfs2_glocks_open(inode, file, &gfs2_glstats_seq_ops);
 }
 
-static int gfs2_sbstats_open(struct inode *inode, struct file *file)
-{
-	int ret = seq_open(file, &gfs2_sbstats_seq_ops);
-	if (ret == 0) {
-		struct seq_file *seq = file->private_data;
-		seq->private = inode->i_private;  /* sdp */
-	}
-	return ret;
-}
-
 static const struct file_operations gfs2_glocks_fops = {
 	.owner   = THIS_MODULE,
 	.open    = gfs2_glocks_open,
@@ -2494,13 +2484,7 @@ static const struct file_operations gfs2_glstats_fops = {
 	.release = gfs2_glocks_release,
 };
 
-static const struct file_operations gfs2_sbstats_fops = {
-	.owner   = THIS_MODULE,
-	.open	 = gfs2_sbstats_open,
-	.read    = seq_read,
-	.llseek  = seq_lseek,
-	.release = seq_release,
-};
+DEFINE_SEQ_ATTRIBUTE(gfs2_sbstats);
 
 void gfs2_create_debugfs_file(struct gfs2_sbd *sdp)
 {
-- 
2.25.1