Btrfs: cleanup extent_clear_unlock_delalloc flags

extent_clear_unlock_delalloc has a growing set of ugly parameters
that is very difficult to read and maintain.

This switches to a flag field and well named flag defines.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 4794ec891fed..41d2a47ecf38 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -25,6 +25,15 @@
 #define EXTENT_BUFFER_BLOCKING 1
 #define EXTENT_BUFFER_DIRTY 2
 
+/* these are flags for extent_clear_unlock_delalloc */
+#define EXTENT_CLEAR_UNLOCK_PAGE 0x1
+#define EXTENT_CLEAR_UNLOCK      0x2
+#define EXTENT_CLEAR_DELALLOC    0x4
+#define EXTENT_CLEAR_DIRTY       0x8
+#define EXTENT_SET_WRITEBACK     0x10
+#define EXTENT_END_WRITEBACK     0x20
+#define EXTENT_SET_PRIVATE2      0x40
+
 /*
  * page->private values.  Every page that is controlled by the extent
  * map has page->private set to one.
@@ -288,10 +297,5 @@ int extent_range_uptodate(struct extent_io_tree *tree,
 int extent_clear_unlock_delalloc(struct inode *inode,
                                 struct extent_io_tree *tree,
                                 u64 start, u64 end, struct page *locked_page,
-                                int unlock_page,
-                                int clear_unlock,
-                                int clear_delalloc, int clear_dirty,
-                                int set_writeback,
-                                int end_writeback,
-                                int set_private2);
+                                unsigned long op);
 #endif