From dcce73bf149db12f505d03cc901cb4ded0a51bd1 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Mon, 3 Mar 2025 22:16:21 +0000
Subject: [PATCH] UPSTREAM: f2fs: set highest IO priority for checkpoint thread

The checkpoint is the top priority thread which can stop all the filesystem
operations. Let's make it RT priority.

Reviewed-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Change-Id: I5c6bdaa9cd46f0263e3ff6d845cb39fae61a4e13
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit 8a2d9f00d502e6ef68c6d52f0863856040ddd2db)
---
 fs/f2fs/checkpoint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 60e27d292a6d..340603d68239 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -22,7 +22,7 @@
 #include <trace/events/f2fs.h>
 #include <trace/hooks/fs.h>
 
-#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
+#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_RT, 3))
 
 static struct kmem_cache *ino_entry_slab;
 struct kmem_cache *f2fs_inode_entry_slab;