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staging: erofs: remove __EROFS_BIT

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It's better to use pre-calculated values to make
on-disk definition more straight-forward and human-readable.

Since there is the only one user, let's remove
__EROFS_BIT entirely.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Gao Xiang <hsiangkao@aol.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2018-12-12 01:57:30 +08:00 committed by Greg Kroah-Hartman
parent b8e076a6ef
commit ccd9c19c7a
1 changed files with 3 additions and 5 deletions
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8
drivers/staging/erofs/erofs_fs.h
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@ -38,10 +38,6 @@ struct erofs_super_block {
/* 80 */__u8 reserved2[48]; /* 128 bytes */
} __packed;
#define __EROFS_BIT(_prefix, _cur, _pre) enum { \
_prefix ## _cur ## _BIT = _prefix ## _pre ## _BIT + \
_prefix ## _pre ## _BITS }
/*
* erofs inode data mapping:
* 0 - inode plain without inline data A:
@ -58,11 +54,13 @@ enum {
EROFS_INODE_LAYOUT_INLINE,
EROFS_INODE_LAYOUT_MAX
};
/* bit definitions of inode i_advise */
#define EROFS_I_VERSION_BITS 1
#define EROFS_I_DATA_MAPPING_BITS 3
#define EROFS_I_VERSION_BIT 0
__EROFS_BIT(EROFS_I_, DATA_MAPPING, VERSION);
#define EROFS_I_DATA_MAPPING_BIT 1
struct erofs_inode_v1 {
/* 0 */__le16 i_advise;