2 files changed, 8 insertions, 2 deletions

diff --git a/fs/coda/coda_int.h b/fs/coda/coda_int.h
index 6b443ff43a19..b7143cf783ac 100644
--- a/fs/coda/coda_int.h
+++ b/fs/coda/coda_int.h
@@ -11,7 +11,7 @@ extern int coda_fake_statfs;
 
 void coda_destroy_inodecache(void);
 int coda_init_inodecache(void);
-int coda_fsync(struct file *coda_file, int datasync);
+int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync);
 void coda_sysctl_init(void);
 void coda_sysctl_clean(void);
 
diff --git a/fs/coda/file.c b/fs/coda/file.c
index 0433057be330..8edd404e6419 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -199,7 +199,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
         return 0;
 }
 
-int coda_fsync(struct file *coda_file, int datasync)
+int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync)
 {
         struct file *host_file;
         struct inode *coda_inode = coda_file->f_path.dentry->d_inode;
@@ -210,6 +210,11 @@ int coda_fsync(struct file *coda_file, int datasync)
               S_ISLNK(coda_inode->i_mode)))
                 return -EINVAL;
 
+        err = filemap_write_and_wait_range(coda_inode->i_mapping, start, end);
+        if (err)
+                return err;
+        mutex_lock(&coda_inode->i_mutex);
+
         cfi = CODA_FTOC(coda_file);
         BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
         host_file = cfi->cfi_container;
@@ -217,6 +222,7 @@ int coda_fsync(struct file *coda_file, int datasync)
         err = vfs_fsync(host_file, datasync);
         if (!err && !datasync)
                 err = venus_fsync(coda_inode->i_sb, coda_i2f(coda_inode));
+        mutex_unlock(&coda_inode->i_mutex);
 
         return err;
 }