linux-kernel - [PATCH 2/3] f2fs: export f2fs_stop_flush

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Date:   Thu, 27 Oct 2022 20:08:06 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     jaegeuk@...nel.org, chao@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Yangtao Li <frank.li@...o.com>
Subject: [PATCH 2/3] f2fs: export f2fs_stop_flush_thread() for external use

Need to stop the flush thread running externally,
so export it.

Signed-off-by: Yangtao Li <frank.li@...o.com>
---
 fs/f2fs/f2fs.h    | 1 +
 fs/f2fs/segment.c | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b467c0ca1118..0d072b029187 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3732,6 +3732,7 @@ unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
 			unsigned int segno);
 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
 			unsigned int segno);
+void f2fs_stop_flush_thread(struct f2fs_sb_info *sbi);
 
 #define DEF_FRAGMENT_SIZE	4
 #define MIN_FRAGMENT_SIZE	1
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 282616e6852a..f0f52979397e 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -671,7 +671,7 @@ int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
 	return 0;
 }
 
-void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
+void f2fs_stop_flush_thread(struct f2fs_sb_info *sbi)
 {
 	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
 
@@ -681,6 +681,13 @@ void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
 		fcc->f2fs_issue_flush = NULL;
 		kthread_stop(flush_thread);
 	}
+}
+
+void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
+{
+	struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
+
+	f2fs_stop_flush_thread(sbi);
 	if (free) {
 		kfree(fcc);
 		SM_I(sbi)->fcc_info = NULL;
-- 
2.25.1