fat: add fat_msg_ratelimit()

Add a fat_msg_ratelimit() to limit the message generation rate.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Amit Sahrawat <amit.sahrawat83@gmail.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index 951d12b61b58..fc35c5c69136 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -335,6 +335,11 @@ void __fat_fs_error(struct super_block *sb, int report, const char *fmt, ...);
         __fat_fs_error(sb, __ratelimit(&MSDOS_SB(sb)->ratelimit), fmt , ## args)
 __printf(3, 4) __cold
 void fat_msg(struct super_block *sb, const char *level, const char *fmt, ...);
+#define fat_msg_ratelimit(sb, level, fmt, args...)      \
+        do {    \
+                        if (__ratelimit(&MSDOS_SB(sb)->ratelimit))      \
+                                fat_msg(sb, level, fmt, ## args);       \
+         } while (0)
 extern int fat_clusters_flush(struct super_block *sb);
 extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
 extern void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,