fs/proc/meminfo: meminfo_proc_show(): fix typo in comment

[linux.git] / fs / direct-io.c

diff --git a/fs/direct-io.c b/fs/direct-io.c
index 6e6bff3752446036990fb4a5d0eca4cdaad3fac5..31ba0935e32ed2f271253a1d828778a91193b211 100644 (file)
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1193,13 +1193,19 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
        }
 
        /*
-        * For file extending writes updating i_size before data
-        * writeouts complete can expose uninitialized blocks. So
-        * even for AIO, we need to wait for i/o to complete before
-        * returning in this case.
+        * For file extending writes updating i_size before data writeouts
+        * complete can expose uninitialized blocks in dumb filesystems.
+        * In that case we need to wait for I/O completion even if asked
+        * for an asynchronous write.
         */
-       dio->is_async = !is_sync_kiocb(iocb) && !((rw & WRITE) &&
-               (end > i_size_read(inode)));
+       if (is_sync_kiocb(iocb))
+               dio->is_async = false;
+       else if (!(dio->flags & DIO_ASYNC_EXTEND) &&
+            (rw & WRITE) && end > i_size_read(inode))
+               dio->is_async = false;
+       else
+               dio->is_async = true;
+
        dio->inode = inode;
        dio->rw = rw;