1 files changed, 16 insertions, 5 deletions

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 2638c834ed2..0d22afdd461 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -362,9 +362,20 @@ retry:
         return 0;
 }
 
-int hostfs_fsync(struct file *file, int datasync)
+int hostfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
-        return fsync_file(HOSTFS_I(file->f_mapping->host)->fd, datasync);
+        struct inode *inode = file->f_mapping->host;
+        int ret;
+
+        ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
+        if (ret)
+                return ret;
+
+        mutex_lock(&inode->i_mutex);
+        ret = fsync_file(HOSTFS_I(inode)->fd, datasync);
+        mutex_unlock(&inode->i_mutex);
+
+        return ret;
 }
 
 static const struct file_operations hostfs_file_fops = {
@@ -748,12 +759,12 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
         return err;
 }
 
-int hostfs_permission(struct inode *ino, int desired, unsigned int flags)
+int hostfs_permission(struct inode *ino, int desired)
 {
         char *name;
         int r = 0, w = 0, x = 0, err;
 
-        if (flags & IPERM_FLAG_RCU)
+        if (desired & MAY_NOT_BLOCK)
                 return -ECHILD;
 
         if (desired & MAY_READ) r = 1;
@@ -770,7 +781,7 @@ int hostfs_permission(struct inode *ino, int desired, unsigned int flags)
                 err = access_file(name, r, w, x);
         __putname(name);
         if (!err)
-                err = generic_permission(ino, desired, flags, NULL);
+                err = generic_permission(ino, desired);
         return err;
 }