1 files changed, 8 insertions, 4 deletions

diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h
index e933e2a355ad..d9035c73e5d1 100644
--- a/include/linux/msdos_fs.h
+++ b/include/linux/msdos_fs.h
@@ -184,6 +184,7 @@ struct fat_slot_info {
 #include <linux/string.h>
 #include <linux/nls.h>
 #include <linux/fs.h>
+#include <linux/mutex.h>
 
 struct fat_mount_options {
         uid_t fs_uid;
@@ -199,7 +200,7 @@ struct fat_mount_options {
                  sys_immutable:1, /* set = system files are immutable */
                  dotsOK:1,        /* set = hidden and system files are named '.filename' */
                  isvfat:1,        /* 0=no vfat long filename support, 1=vfat support */
-                 utf8:1,          /* Use of UTF8 character set (Default) */
+                 utf8:1,          /* Use of UTF-8 character set (Default) */
                  unicode_xlate:1, /* create escape sequences for unhandled Unicode */
                  numtail:1,       /* Does first alias have a numeric '~1' type tail? */
                  atari:1,         /* Use Atari GEMDOS variation of MS-DOS fs */
@@ -226,7 +227,7 @@ struct msdos_sb_info {
         unsigned long max_cluster;   /* maximum cluster number */
         unsigned long root_cluster;  /* first cluster of the root directory */
         unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */
-        struct semaphore fat_lock;
+        struct mutex fat_lock;
         unsigned int prev_free;      /* previously allocated cluster number */
         unsigned int free_clusters;  /* -1 if undefined */
         struct fat_mount_options options;
@@ -333,7 +334,7 @@ extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
                     unsigned long *mapped_blocks);
 
 /* fat/dir.c */
-extern struct file_operations fat_dir_operations;
+extern const struct file_operations fat_dir_operations;
 extern int fat_search_long(struct inode *inode, const unsigned char *name,
                            int name_len, struct fat_slot_info *sinfo);
 extern int fat_dir_empty(struct inode *dir);
@@ -396,7 +397,7 @@ extern int fat_count_free_clusters(struct super_block *sb);
 /* fat/file.c */
 extern int fat_generic_ioctl(struct inode *inode, struct file *filp,
                              unsigned int cmd, unsigned long arg);
-extern struct file_operations fat_file_operations;
+extern const struct file_operations fat_file_operations;
 extern struct inode_operations fat_file_inode_operations;
 extern int fat_notify_change(struct dentry * dentry, struct iattr * attr);
 extern void fat_truncate(struct inode *inode);
@@ -419,6 +420,9 @@ extern int date_dos2unix(unsigned short time, unsigned short date);
 extern void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date);
 extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
 
+int fat_cache_init(void);
+void fat_cache_destroy(void);
+
 #endif /* __KERNEL__ */
 
 #endif