[PATCH] uml: implement hostfs syncing

Actually implement the hostfs "sync" method.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 4796e8490f7d..b97809deba66 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -153,10 +153,24 @@ int lseek_file(int fd, long long offset, int whence)
         int ret;
 
         ret = lseek64(fd, offset, whence);
-        if(ret < 0) return(-errno);
+        if(ret < 0)
+                return(-errno);
         return(0);
 }
 
+int fsync_file(int fd, int datasync)
+{
+        int ret;
+        if (datasync)
+                ret = fdatasync(fd);
+        else
+                ret = fsync(fd);
+
+        if (ret < 0)
+                return -errno;
+        return 0;
+}
+
 void close_file(void *stream)
 {
         close(*((int *) stream));