Sanitize ->fsync() for FAT

* mark directory data blocks as assoc. metadata
* add new inode to deal with FAT, mark FAT blocks as assoc. metadata of that
* now ->fsync() is trivial both for files and directories

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 13 insertions, 1 deletions

diff --git a/fs/fat/file.c b/fs/fat/file.c
index 0a7f4a9918b3..e955a56b4e5e 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -133,6 +133,18 @@ static int fat_file_release(struct inode *inode, struct file *filp)
         return 0;
 }
 
+int fat_file_fsync(struct file *filp, struct dentry *dentry, int datasync)
+{
+        struct inode *inode = dentry->d_inode;
+        int res, err;
+
+        res = simple_fsync(filp, dentry, datasync);
+        err = sync_mapping_buffers(MSDOS_SB(inode->i_sb)->fat_inode->i_mapping);
+
+        return res ? res : err;
+}
+
+
 const struct file_operations fat_file_operations = {
         .llseek         = generic_file_llseek,
         .read           = do_sync_read,
@@ -142,7 +154,7 @@ const struct file_operations fat_file_operations = {
         .mmap           = generic_file_mmap,
         .release        = fat_file_release,
         .ioctl          = fat_generic_ioctl,
-        .fsync          = file_fsync,
+        .fsync          = fat_file_fsync,
         .splice_read    = generic_file_splice_read,
 };