staging: erofs: rename data_mapping_mode to datamode

data_mapping_mode is too long as a member name of erofs_vnode,
datamode is straight-forward enough.
Reviewed-by: NChao Yu <yuchao0@huawei.com>
Signed-off-by: NGao Xiang <gaoxiang25@huawei.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/erofs/inode.c

@@ -22,11 +22,11 @@ static int read_inode(struct inode *inode, void *data)
 	const unsigned int advise = le16_to_cpu(v1->i_advise);
 	erofs_blk_t nblks = 0;
 
-	vi->data_mapping_mode = __inode_data_mapping(advise);
+	vi->datamode = __inode_data_mapping(advise);
 
-	if (unlikely(vi->data_mapping_mode >= EROFS_INODE_LAYOUT_MAX)) {
-		errln("unknown data mapping mode %u of nid %llu",
-		      vi->data_mapping_mode, vi->nid);
+	if (unlikely(vi->datamode >= EROFS_INODE_LAYOUT_MAX)) {
+		errln("unsupported data mapping %u of nid %llu",
+		      vi->datamode, vi->nid);
 		DBG_BUGON(1);
 		return -EIO;
 	}
@@ -63,7 +63,7 @@ static int read_inode(struct inode *inode, void *data)
 		inode->i_size = le64_to_cpu(v2->i_size);
 
 		/* total blocks for compressed files */
-		if (vi->data_mapping_mode == EROFS_INODE_LAYOUT_COMPRESSION)
+		if (is_inode_layout_compression(inode))
 			nblks = le32_to_cpu(v2->i_u.compressed_blocks);
 	} else if (__inode_version(advise) == EROFS_INODE_LAYOUT_V1) {
 		struct erofs_sb_info *sbi = EROFS_SB(inode->i_sb);
@@ -95,7 +95,7 @@ static int read_inode(struct inode *inode, void *data)
 			sbi->build_time_nsec;
 
 		inode->i_size = le32_to_cpu(v1->i_size);
-		if (vi->data_mapping_mode == EROFS_INODE_LAYOUT_COMPRESSION)
+		if (is_inode_layout_compression(inode))
 			nblks = le32_to_cpu(v1->i_u.compressed_blocks);
 	} else {
 		errln("unsupported on-disk inode version %u of nid %llu",
@@ -127,7 +127,7 @@ static int fill_inline_data(struct inode *inode, void *data,
 {
 	struct erofs_vnode *vi = EROFS_V(inode);
 	struct erofs_sb_info *sbi = EROFS_I_SB(inode);
-	int mode = vi->data_mapping_mode;
+	const int mode = vi->datamode;
 
 	DBG_BUGON(mode >= EROFS_INODE_LAYOUT_MAX);
 
@@ -299,9 +299,8 @@ int erofs_getattr(const struct path *path, struct kstat *stat,
 		  u32 request_mask, unsigned int query_flags)
 {
 	struct inode *const inode = d_inode(path->dentry);
-	struct erofs_vnode *const vi = EROFS_V(inode);
 
-	if (vi->data_mapping_mode == EROFS_INODE_LAYOUT_COMPRESSION)
+	if (is_inode_layout_compression(inode))
 		stat->attributes |= STATX_ATTR_COMPRESSED;
 
 	stat->attributes |= STATX_ATTR_IMMUTABLE;

drivers/staging/erofs/internal.h

@@ -349,8 +349,7 @@ struct erofs_vnode {
 	/* atomic flags (including bitlocks) */
 	unsigned long flags;
 
-	unsigned char data_mapping_mode;
-	/* inline size in bytes */
+	unsigned char datamode;
 	unsigned char inode_isize;
 	unsigned short xattr_isize;
 
@@ -385,18 +384,17 @@ static inline unsigned long inode_datablocks(struct inode *inode)
 
 static inline bool is_inode_layout_plain(struct inode *inode)
 {
-	return EROFS_V(inode)->data_mapping_mode == EROFS_INODE_LAYOUT_PLAIN;
+	return EROFS_V(inode)->datamode == EROFS_INODE_LAYOUT_PLAIN;
 }
 
 static inline bool is_inode_layout_compression(struct inode *inode)
 {
-	return EROFS_V(inode)->data_mapping_mode ==
-					EROFS_INODE_LAYOUT_COMPRESSION;
+	return EROFS_V(inode)->datamode == EROFS_INODE_LAYOUT_COMPRESSION;
 }
 
 static inline bool is_inode_layout_inline(struct inode *inode)
 {
-	return EROFS_V(inode)->data_mapping_mode == EROFS_INODE_LAYOUT_INLINE;
+	return EROFS_V(inode)->datamode == EROFS_INODE_LAYOUT_INLINE;
 }
 
 extern const struct super_operations erofs_sops;