rename the generic fsync implementations

We don't name our generic fsync implementations very well currently.
The no-op implementation for in-memory filesystems currently is called
simple_sync_file which doesn't make too much sense to start with,
the the generic one for simple filesystems is called simple_fsync
which can lead to some confusion.

This patch renames the generic file fsync method to generic_file_fsync
to match the other generic_file_* routines it is supposed to be used
with, and the no-op implementation to noop_fsync to make it obvious
what to expect.  In addition add some documentation for both methods.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/udf/file.c b/fs/udf/file.c
index baae3a723946..0660280aa180 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -224,7 +224,7 @@ const struct file_operations udf_file_operations = {
         .write                  = do_sync_write,
         .aio_write              = udf_file_aio_write,
         .release                = udf_release_file,
-        .fsync                  = simple_fsync,
+        .fsync                  = generic_file_fsync,
         .splice_read            = generic_file_splice_read,
         .llseek                 = generic_file_llseek,
 };