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| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-04-14 11:30:27 +0300 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-04-16 20:15:55 +0300 |
| commit | 745ed7d77834048879bf24088c94e5a6462b613f (patch) | |
| tree | b8332bbd8252efaa88935b3f7a55438a0f583512 /fs/erofs | |
| parent | 10656f9ca60ed85f4cfc06bcbe1f240ee310fa8c (diff) | |
| download | linux-745ed7d77834048879bf24088c94e5a6462b613f.tar.xz | |
erofs: cleanup i_format-related stuffs
Switch EROFS_I_{VERSION,DATALAYOUT}_BITS into
EROFS_I_{VERSION,DATALAYOUT}_MASK.
Also avoid erofs_bitrange() since its functionality is simple enough.
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20230414083027.12307-2-hsiangkao@linux.alibaba.com
Diffstat (limited to 'fs/erofs')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 8 | ||||
| -rw-r--r-- | fs/erofs/internal.h | 18 |
2 files changed, 8 insertions, 18 deletions
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 4ec422c2b74f..2c7b16e340fe 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -109,14 +109,14 @@ static inline bool erofs_inode_is_data_compressed(unsigned int datamode) } /* bit definitions of inode i_format */ -#define EROFS_I_VERSION_BITS 1 -#define EROFS_I_DATALAYOUT_BITS 3 +#define EROFS_I_VERSION_MASK 0x01 +#define EROFS_I_DATALAYOUT_MASK 0x07 #define EROFS_I_VERSION_BIT 0 #define EROFS_I_DATALAYOUT_BIT 1 +#define EROFS_I_ALL_BIT 4 -#define EROFS_I_ALL \ - ((1 << (EROFS_I_DATALAYOUT_BIT + EROFS_I_DATALAYOUT_BITS)) - 1) +#define EROFS_I_ALL ((1 << EROFS_I_ALL_BIT) - 1) /* indicate chunk blkbits, thus 'chunksize = blocksize << chunk blkbits' */ #define EROFS_CHUNK_FORMAT_BLKBITS_MASK 0x001F diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 34d5113e13eb..af0431a40647 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -343,24 +343,14 @@ static inline erofs_off_t erofs_iloc(struct inode *inode) (EROFS_I(inode)->nid << sbi->islotbits); } -static inline unsigned int erofs_bitrange(unsigned int value, unsigned int bit, - unsigned int bits) +static inline unsigned int erofs_inode_version(unsigned int ifmt) { - - return (value >> bit) & ((1 << bits) - 1); -} - - -static inline unsigned int erofs_inode_version(unsigned int value) -{ - return erofs_bitrange(value, EROFS_I_VERSION_BIT, - EROFS_I_VERSION_BITS); + return (ifmt >> EROFS_I_VERSION_BIT) & EROFS_I_VERSION_MASK; } -static inline unsigned int erofs_inode_datalayout(unsigned int value) +static inline unsigned int erofs_inode_datalayout(unsigned int ifmt) { - return erofs_bitrange(value, EROFS_I_DATALAYOUT_BIT, - EROFS_I_DATALAYOUT_BITS); + return (ifmt >> EROFS_I_DATALAYOUT_BIT) & EROFS_I_DATALAYOUT_MASK; } /* |