[PATCH] vfs: Remove the range_cont writeback mode.

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

Ext4 was the only user of range_cont writeback mode
and ext4 switched to a different method. So remove
the range_cont mode which is not used in the kernel.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
CC: linux-fsdevel@vger.kernel.org
---
 include/linux/writeback.h |    1 -
 mm/page-writeback.c       |    2 --
 2 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 12b15c5..bd91987 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -63,7 +63,6 @@ struct writeback_control {
 	unsigned for_writepages:1;	/* This is a writepages() call */
 	unsigned range_cyclic:1;	/* range_start is cyclic */
 	unsigned more_io:1;		/* more io to be dispatched */
-	unsigned range_cont:1;
 };
 
 /*
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 24de8b6..718efa6 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -961,8 +961,6 @@ int write_cache_pages(struct address_space *mapping,
 	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
 		mapping->writeback_index = index;
 
-	if (wbc->range_cont)
-		wbc->range_start = index << PAGE_CACHE_SHIFT;
 	return ret;
 }
 EXPORT_SYMBOL(write_cache_pages);
-- 
1.6.0.2.526.g5c283