From: Vivek BalachandharTN <vivek.balachandhar@gmail.com>
Date: Wed, 15 Oct 2025 07:45:02 +0000 (+0000)
Subject: dm: sysfs: use sysfs_emit() in dm-sysfs.c
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4929ba5c5bd75dc28971f0909902e4624e92ad59;p=thirdparty%2Fkernel%2Flinux.git

dm: sysfs: use sysfs_emit() in dm-sysfs.c

Replace sprintf()+strlen() with sysfs_emit(), the preferred helper for
sysfs show() routines. sysfs_emit() returns the number of bytes written,
guarantees NUL-termination, and clamps to PAGE_SIZE-1.

Reference: Documentation/filesystems/sysfs.rst.

No functional change intended.

Signed-off-by: Vivek BalachandharTN <vivek.balachandhar@gmail.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
---

diff --git a/drivers/md/dm-sysfs.c b/drivers/md/dm-sysfs.c
index bfaef27ca79f..22bc70923a83 100644
--- a/drivers/md/dm-sysfs.c
+++ b/drivers/md/dm-sysfs.c
@@ -86,17 +86,13 @@ static ssize_t dm_attr_uuid_show(struct mapped_device *md, char *buf)
 
 static ssize_t dm_attr_suspended_show(struct mapped_device *md, char *buf)
 {
-	sprintf(buf, "%d\n", dm_suspended_md(md));
-
-	return strlen(buf);
+	return sysfs_emit(buf, "%d\n", dm_suspended_md(md));
 }
 
 static ssize_t dm_attr_use_blk_mq_show(struct mapped_device *md, char *buf)
 {
 	/* Purely for userspace compatibility */
-	sprintf(buf, "%d\n", true);
-
-	return strlen(buf);
+	return sysfs_emit(buf, "%d\n", true);
 }
 
 static DM_ATTR_RO(name);