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-rw-r--r--fs/fs-writeback.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index e4504299f4a..271cf2150ba 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -739,23 +739,23 @@ static long wb_writeback(struct bdi_writeback *wb,
wrote += write_chunk - wbc.nr_to_write;
/*
- * If we consumed everything, see if we have more
+ * Did we write something? Try for more
+ *
+ * Dirty inodes are moved to b_io for writeback in batches.
+ * The completion of the current batch does not necessarily
+ * mean the overall work is done. So we keep looping as long
+ * as made some progress on cleaning pages or inodes.
*/
- if (wbc.nr_to_write <= 0)
+ if (wbc.nr_to_write < write_chunk)
continue;
if (wbc.inodes_written)
continue;
/*
- * Didn't write everything and we don't have more IO, bail
+ * No more inodes for IO, bail
*/
if (!wbc.more_io)
break;
/*
- * Did we write something? Try for more
- */
- if (wbc.nr_to_write < write_chunk)
- continue;
- /*
* Nothing written. Wait for some inode to
* become available for writeback. Otherwise
* we'll just busyloop.