From: Yangtao Li <frank.li@vivo.com>
Date: Wed, 21 Dec 2022 19:20:01 +0000 (+0800)
Subject: f2fs: add iostat support for flush
X-Git-Tag: v6.3-rc1~56^2~46
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=193a639fed92793ad10e327cfb2be7175be01425;p=thirdparty%2Fkernel%2Fstable.git

f2fs: add iostat support for flush

In this patch, it adds to account flush count.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index d4729f8af2478..331c330ea31dc 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1192,6 +1192,7 @@ enum iostat_type {
 
 	/* other */
 	FS_DISCARD_IO,			/* discard */
+	FS_FLUSH_IO,			/* flush */
 	NR_IO_TYPE,
 };
 
diff --git a/fs/f2fs/iostat.c b/fs/f2fs/iostat.c
index acf834c772912..91b384bea5ac5 100644
--- a/fs/f2fs/iostat.c
+++ b/fs/f2fs/iostat.c
@@ -80,6 +80,7 @@ int __maybe_unused iostat_info_seq_show(struct seq_file *seq, void *offset)
 	/* print other IOs */
 	seq_puts(seq, "[OTHER]\n");
 	IOSTAT_INFO_SHOW("fs discard", FS_DISCARD_IO);
+	IOSTAT_INFO_SHOW("fs flush", FS_FLUSH_IO);
 
 	return 0;
 }
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 311243dda4cef..976316218bd3f 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -506,6 +506,8 @@ static int __submit_flush_wait(struct f2fs_sb_info *sbi,
 
 	trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
 				test_opt(sbi, FLUSH_MERGE), ret);
+	if (!ret)
+		f2fs_update_iostat(sbi, NULL, FS_FLUSH_IO, 0);
 	return ret;
 }