[PATCH 16/21] erofs: kill magic underscores

[Gao Xiang]

From: Gao Xiang <gaoxiang25 at huawei.com>

As Christoph said [1], "
> +	vi->datamode = __inode_data_mapping(advise);

What is the deal with these magic underscores here and various
other similar helpers? "

Let avoid magic underscores now...
[1] https://lore.kernel.org/lkml/20190829102426.GE20598@infradead.org/
Reported-by: Christoph Hellwig <hch at infradead.org>
Signed-off-by: Gao Xiang <gaoxiang25 at huawei.com>
---
 fs/erofs/inode.c    |  8 ++++----
 fs/erofs/internal.h | 14 ++++++--------
 2 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
index 19a574ee690b..2ca4eda6e5bf 100644
--- a/fs/erofs/inode.c
+++ b/fs/erofs/inode.c
@@ -16,7 +16,7 @@ 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->datamode = __inode_data_mapping(advise);
+	vi->datamode = erofs_inode_data_mapping(advise);
 
 	if (vi->datamode >= EROFS_INODE_LAYOUT_MAX) {
 		errln("unsupported data mapping %u of nid %llu",
@@ -25,7 +25,7 @@ static int read_inode(struct inode *inode, void *data)
 		return -EOPNOTSUPP;
 	}
 
-	if (__inode_version(advise) == EROFS_INODE_LAYOUT_V2) {
+	if (erofs_inode_version(advise) == EROFS_INODE_LAYOUT_V2) {
 		struct erofs_inode_v2 *v2 = data;
 
 		vi->inode_isize = sizeof(struct erofs_inode_v2);
@@ -58,7 +58,7 @@ static int read_inode(struct inode *inode, void *data)
 		/* total blocks for compressed files */
 		if (erofs_inode_is_data_compressed(vi->datamode))
 			nblks = le32_to_cpu(v2->i_u.compressed_blocks);
-	} else if (__inode_version(advise) == EROFS_INODE_LAYOUT_V1) {
+	} else if (erofs_inode_version(advise) == EROFS_INODE_LAYOUT_V1) {
 		struct erofs_sb_info *sbi = EROFS_SB(inode->i_sb);
 
 		vi->inode_isize = sizeof(struct erofs_inode_v1);
@@ -91,7 +91,7 @@ static int read_inode(struct inode *inode, void *data)
 			nblks = le32_to_cpu(v1->i_u.compressed_blocks);
 	} else {
 		errln("unsupported on-disk inode version %u of nid %llu",
-		      __inode_version(advise), vi->nid);
+		      erofs_inode_version(advise), vi->nid);
 		DBG_BUGON(1);
 		return -EOPNOTSUPP;
 	}
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 15545959af92..4a35a31fd454 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -308,16 +308,14 @@ struct erofs_inode {
 #define EROFS_I(ptr)	\
 	container_of(ptr, struct erofs_inode, vfs_inode)
 
-#define __inode_advise(x, bit, bits) \
-	(((x) >> (bit)) & ((1 << (bits)) - 1))
+#define erofs_bitrange(x, bit, bits) (((x) >> (bit)) & ((1 << (bits)) - 1))
 
-#define __inode_version(advise)	\
-	__inode_advise(advise, EROFS_I_VERSION_BIT,	\
-		EROFS_I_VERSION_BITS)
+#define erofs_inode_version(advise)	\
+	erofs_bitrange(advise, EROFS_I_VERSION_BIT, EROFS_I_VERSION_BITS)
 
-#define __inode_data_mapping(advise)	\
-	__inode_advise(advise, EROFS_I_DATA_MAPPING_BIT,\
-		EROFS_I_DATA_MAPPING_BITS)
+#define erofs_inode_data_mapping(advise)	\
+	erofs_bitrange(advise, EROFS_I_DATA_MAPPING_BIT, \
+		       EROFS_I_DATA_MAPPING_BITS)
 
 static inline unsigned long inode_datablocks(struct inode *inode)
 {
-- 
2.17.1