xfs: replace snprintf in show functions with sysfs_emit

coccicheck complains about the use of snprintf() in sysfs show functions.

Fix the coccicheck warning:
WARNING: use scnprintf or sprintf.

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Signed-off-by: Qing Wang <wangqing@vivo.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
index 18dc5eca6c04501a11b20877eb6c6b44164958af..8608f804388fdf9c659357c12795325674cf6a55 100644 (file)
--- a/fs/xfs/xfs_sysfs.c
+++ b/fs/xfs/xfs_sysfs.c
@@ -105,7 +105,7 @@ bug_on_assert_show(
        struct kobject          *kobject,
        char                    *buf)
 {
-       return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bug_on_assert ? 1 : 0);
+       return sysfs_emit(buf, "%d\n", xfs_globals.bug_on_assert);
 }
 XFS_SYSFS_ATTR_RW(bug_on_assert);
 
@@ -135,7 +135,7 @@ log_recovery_delay_show(
        struct kobject  *kobject,
        char            *buf)
 {
-       return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay);
+       return sysfs_emit(buf, "%d\n", xfs_globals.log_recovery_delay);
 }
 XFS_SYSFS_ATTR_RW(log_recovery_delay);
 
@@ -165,7 +165,7 @@ mount_delay_show(
        struct kobject  *kobject,
        char            *buf)
 {
-       return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.mount_delay);
+       return sysfs_emit(buf, "%d\n", xfs_globals.mount_delay);
 }
 XFS_SYSFS_ATTR_RW(mount_delay);
 
@@ -188,7 +188,7 @@ always_cow_show(
        struct kobject  *kobject,
        char            *buf)
 {
-       return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.always_cow);
+       return sysfs_emit(buf, "%d\n", xfs_globals.always_cow);
 }
 XFS_SYSFS_ATTR_RW(always_cow);
 
@@ -224,7 +224,7 @@ pwork_threads_show(
        struct kobject  *kobject,
        char            *buf)
 {
-       return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.pwork_threads);
+       return sysfs_emit(buf, "%d\n", xfs_globals.pwork_threads);
 }
 XFS_SYSFS_ATTR_RW(pwork_threads);
 #endif /* DEBUG */
@@ -327,7 +327,7 @@ log_head_lsn_show(
        block = log->l_curr_block;
        spin_unlock(&log->l_icloglock);
 
-       return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
+       return sysfs_emit(buf, "%d:%d\n", cycle, block);
 }
 XFS_SYSFS_ATTR_RO(log_head_lsn);
 
@@ -341,7 +341,7 @@ log_tail_lsn_show(
        struct xlog *log = to_xlog(kobject);
 
        xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block);
-       return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
+       return sysfs_emit(buf, "%d:%d\n", cycle, block);
 }
 XFS_SYSFS_ATTR_RO(log_tail_lsn);
 
@@ -356,7 +356,7 @@ reserve_grant_head_show(
        struct xlog *log = to_xlog(kobject);
 
        xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes);
-       return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
+       return sysfs_emit(buf, "%d:%d\n", cycle, bytes);
 }
 XFS_SYSFS_ATTR_RO(reserve_grant_head);
 
@@ -370,7 +370,7 @@ write_grant_head_show(
        struct xlog *log = to_xlog(kobject);
 
        xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes);
-       return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
+       return sysfs_emit(buf, "%d:%d\n", cycle, bytes);
 }
 XFS_SYSFS_ATTR_RO(write_grant_head);
 
@@ -425,7 +425,7 @@ max_retries_show(
        else
                retries = cfg->max_retries;
 
-       return snprintf(buf, PAGE_SIZE, "%d\n", retries);
+       return sysfs_emit(buf, "%d\n", retries);
 }
 
 static ssize_t
@@ -466,7 +466,7 @@ retry_timeout_seconds_show(
        else
                timeout = jiffies_to_msecs(cfg->retry_timeout) / MSEC_PER_SEC;
 
-       return snprintf(buf, PAGE_SIZE, "%d\n", timeout);
+       return sysfs_emit(buf, "%d\n", timeout);
 }
 
 static ssize_t
@@ -504,7 +504,7 @@ fail_at_unmount_show(
 {
        struct xfs_mount        *mp = err_to_mp(kobject);
 
-       return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_unmount);
+       return sysfs_emit(buf, "%d\n", mp->m_fail_unmount);
 }
 
 static ssize_t