[PATCH] ufs: fsync implementation

Presently ufs doesn't support "fsync", this make some applications unhappy,
for example vim.  This patch fixes this situation.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/fs/ufs/file.c b/fs/ufs/file.c
index 312fd3f86313..0e5001512a9d 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -25,6 +25,26 @@
 
 #include <linux/fs.h>
 #include <linux/ufs_fs.h>
+#include <linux/buffer_head.h>  /* for sync_mapping_buffers() */
+
+static int ufs_sync_file(struct file *file, struct dentry *dentry, int datasync)
+{
+        struct inode *inode = dentry->d_inode;
+        int err;
+        int ret;
+
+        ret = sync_mapping_buffers(inode->i_mapping);
+        if (!(inode->i_state & I_DIRTY))
+                return ret;
+        if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+                return ret;
+
+        err = ufs_sync_inode(inode);
+        if (ret == 0)
+                ret = err;
+        return ret;
+}
+
 
 /*
  * We have mostly NULL's here: the current defaults are ok for
@@ -37,6 +57,7 @@ const struct file_operations ufs_file_operations = {
         .write          = generic_file_write,
         .mmap           = generic_file_mmap,
         .open           = generic_file_open,
+        .fsync          = ufs_sync_file,
         .sendfile       = generic_file_sendfile,
 };