ext4: fix async i/o writes beyond 4GB to a sparse file

commit a1de02dccf906faba2ee2d99cac56799bda3b96a upstream.

The "offset" member in ext4_io_end holds bytes, not blocks, so
ext4_lblk_t is wrong - and too small (u32).

This caused the async i/o writes to sparse files beyond 4GB to fail
when they wrapped around to 0.

Also fix up the type of arguments to ext4_convert_unwritten_extents(),
it gets ssize_t from ext4_end_aio_dio_nolock() and
ext4_ext_direct_IO().

Reported-by: Giel de Nijs <giel@vectorwise.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 765a4826b118..c56877972b0e 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3603,7 +3603,7 @@ retry:
  * Returns 0 on success.
  */
 int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
-                                    loff_t len)
+                                    ssize_t len)
 {
         handle_t *handle;
         ext4_lblk_t block;