fat: drop lock/unlock super

Removed lock/unlock super. Added a new private s_lock mutex.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index ca7e8f8bad7c..623f36f0423b 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -71,8 +71,9 @@ struct msdos_sb_info {
         unsigned long root_cluster;   /* first cluster of the root directory */
         unsigned long fsinfo_sector;  /* sector number of FAT32 fsinfo */
         struct mutex fat_lock;
-        unsigned int prev_free;       /* previously allocated cluster number */
-        unsigned int free_clusters;   /* -1 if undefined */
+        struct mutex s_lock;
+        unsigned int prev_free;      /* previously allocated cluster number */
+        unsigned int free_clusters;  /* -1 if undefined */
         unsigned int free_clus_valid; /* is free_clusters valid? */
         struct fat_mount_options options;
         struct nls_table *nls_disk;   /* Codepage used on disk */