Let's use sysfs_emit.

Signed-off-by: Yangtao Li <frank...@vivo.com>
---
 fs/f2fs/sysfs.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 9ddc6ee19433..2c0b2cb05a3a 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -312,19 +312,13 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
 
        if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
                struct ckpt_req_control *cprc = &sbi->cprc_info;
-               int len = 0;
                int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
                int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio);
 
-               if (class == IOPRIO_CLASS_RT)
-                       len += scnprintf(buf + len, PAGE_SIZE - len, "rt,");
-               else if (class == IOPRIO_CLASS_BE)
-                       len += scnprintf(buf + len, PAGE_SIZE - len, "be,");
-               else
+               if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
                        return -EINVAL;
 
-               len += scnprintf(buf + len, PAGE_SIZE - len, "%d\n", data);
-               return len;
+               return sysfs_emit(buf, "%s,%d\n", class == IOPRIO_CLASS_RT ? 
"rt" : "be", data);
        }
 
 #ifdef CONFIG_F2FS_FS_COMPRESSION
-- 
2.35.1



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