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-rw-r--r--fs/fat/fat.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index 154ae54a6b3a..df84d5710b59 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -348,6 +348,11 @@ static inline void fatent_brelse(struct fat_entry *fatent)
fatent->fat_inode = NULL;
}
+static inline bool fat_valid_entry(struct msdos_sb_info *sbi, int entry)
+{
+ return FAT_START_ENT <= entry && entry < sbi->max_cluster;
+}
+
extern void fat_ent_access_init(struct super_block *sb);
extern int fat_ent_read(struct inode *inode, struct fat_entry *fatent,
int entry);