[PATCH] ext4: Remove mention of PageWriteback

[Matthew Wilcox (Oracle)]

Update a comment to refer to the concept of writeback instead of the
(now obsolete) detail of how it's implemented.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 fs/ext4/page-io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index dc82e7b57e75..bc674aa4a656 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -168,7 +168,7 @@ static void ext4_release_io_end(ext4_io_end_t *io_end)
  * written. On IO failure, check if journal abort is needed. Note that
  * we are protected from truncate touching same part of extent tree by the
  * fact that truncate code waits for all DIO to finish (thus exclusion from
- * direct IO is achieved) and also waits for PageWriteback bits. Thus we
+ * direct IO is achieved) and also waits for writeback to complete. Thus we
  * cannot get to ext4_ext_truncate() before all IOs overlapping that range are
  * completed (happens from ext4_free_ioend()).
  */
-- 
2.47.3