fs: move inode_dio_done to the end_io handler
For filesystems that delay their end_io processing we should keep our
i_dio_count until the the processing is done. Enable this by moving
the inode_dio_done call to the end_io handler if one exist. Note that
the actual move to the workqueue for ext4 and XFS is not done in
this patch yet, but left to the filesystem maintainers. At least
for XFS it's not needed yet either as XFS has an internal equivalent
to i_dio_count.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 1f35573..678cde8 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3573,6 +3573,7 @@
ssize_t size, void *private, int ret,
bool is_async)
{
+ struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
ext4_io_end_t *io_end = iocb->private;
struct workqueue_struct *wq;
unsigned long flags;
@@ -3594,6 +3595,7 @@
out:
if (is_async)
aio_complete(iocb, ret, 0);
+ inode_dio_done(inode);
return;
}
@@ -3614,6 +3616,9 @@
/* queue the work to convert unwritten extents to written */
queue_work(wq, &io_end->work);
iocb->private = NULL;
+
+ /* XXX: probably should move into the real I/O completion handler */
+ inode_dio_done(inode);
}
static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)