zonefs: Reduce struct zonefs_inode_info size

Instead of using the i_ztype field in struct zonefs_inode_info to
indicate the zone type of an inode, introduce the new inode flag
ZONEFS_ZONE_CNV to be set in the i_flags field of struct
zonefs_inode_info to identify conventional zones. If this flag is not
set, the zone of an inode is considered to be a sequential zone.

The helpers zonefs_zone_is_cnv(), zonefs_zone_is_seq(),
zonefs_inode_is_cnv() and zonefs_inode_is_seq() are introduced to
simplify testing the zone type of a struct zonefs_inode_info and of a
struct inode.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>

1 files changed, 21 insertions, 3 deletions

diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h
index 439096445ee5..1a225f74015a 100644
--- a/fs/zonefs/zonefs.h
+++ b/fs/zonefs/zonefs.h
@@ -44,6 +44,7 @@ static inline enum zonefs_ztype zonefs_zone_type(struct blk_zone *zone)
 #define ZONEFS_ZONE_ACTIVE	(1U << 2)
 #define ZONEFS_ZONE_OFFLINE	(1U << 3)
 #define ZONEFS_ZONE_READONLY	(1U << 4)
+#define ZONEFS_ZONE_CNV		(1U << 31)
 
 /*
  * In-memory inode data.
@@ -51,9 +52,6 @@ static inline enum zonefs_ztype zonefs_zone_type(struct blk_zone *zone)
 struct zonefs_inode_info {
 	struct inode		i_vnode;
 
-	/* File zone type */
-	enum zonefs_ztype	i_ztype;
-
 	/* File zone start sector (512B unit) */
 	sector_t		i_zsector;
 
@@ -91,6 +89,26 @@ static inline struct zonefs_inode_info *ZONEFS_I(struct inode *inode)
 	return container_of(inode, struct zonefs_inode_info, i_vnode);
 }
 
+static inline bool zonefs_zone_is_cnv(struct zonefs_inode_info *zi)
+{
+	return zi->i_flags & ZONEFS_ZONE_CNV;
+}
+
+static inline bool zonefs_zone_is_seq(struct zonefs_inode_info *zi)
+{
+	return !zonefs_zone_is_cnv(zi);
+}
+
+static inline bool zonefs_inode_is_cnv(struct inode *inode)
+{
+	return zonefs_zone_is_cnv(ZONEFS_I(inode));
+}
+
+static inline bool zonefs_inode_is_seq(struct inode *inode)
+{
+	return zonefs_zone_is_seq(ZONEFS_I(inode));
+}
+
 /*
  * On-disk super block (block 0).
  */