1 files changed, 15 insertions, 0 deletions

diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index fc35c5c69136..2deeeb86f331 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -217,6 +217,21 @@ static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len)
 #endif
 }
 
+static inline int fat_get_start(const struct msdos_sb_info *sbi,
+                                const struct msdos_dir_entry *de)
+{
+        int cluster = le16_to_cpu(de->start);
+        if (sbi->fat_bits == 32)
+                cluster |= (le16_to_cpu(de->starthi) << 16);
+        return cluster;
+}
+
+static inline void fat_set_start(struct msdos_dir_entry *de, int cluster)
+{
+        de->start   = cpu_to_le16(cluster);
+        de->starthi = cpu_to_le16(cluster >> 16);
+}
+
 static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
 {
 #ifdef __BIG_ENDIAN