btrfs: simplify handling of bio_ctrl::bio_flags

The bio_flags are used only to encode the compression and there are no
other EXTENT_BIO_* flags, so the compress type can be stored directly.
The struct member name is left unchanged and will be cleaned in later
patches.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 9 deletions

diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index b390ec79f9a8..ba793cb7a3a2 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -9,13 +9,6 @@
 #include <linux/btrfs_tree.h>
 #include "ulist.h"
 
-/*
- * flags for bio submission. The high bits indicate the compression
- * type for this bio
- */
-#define EXTENT_BIO_COMPRESSED 1
-#define EXTENT_BIO_FLAG_SHIFT 16
-
 enum {
 	EXTENT_BUFFER_UPTODATE,
 	EXTENT_BUFFER_DIRTY,
@@ -150,12 +143,12 @@ static inline void extent_changeset_free(struct extent_changeset *changeset)
 static inline void extent_set_compress_type(unsigned long *bio_flags,
 					    int compress_type)
 {
-	*bio_flags |= compress_type << EXTENT_BIO_FLAG_SHIFT;
+	*bio_flags = compress_type;
 }
 
 static inline int extent_compress_type(unsigned long bio_flags)
 {
-	return bio_flags >> EXTENT_BIO_FLAG_SHIFT;
+	return bio_flags;
 }
 
 struct extent_map_tree;