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| author | Gao Xiang <gaoxiang25@huawei.com> | 2019-09-04 10:08:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-05 20:10:07 +0200 |
| commit | 426a930891cf17c5c16f12e8e2c8cb75c4cfff3c (patch) | |
| tree | 8472b812f8bf6533d01c5cc134cdf5321a7dde80 /fs/erofs | |
| parent | c39747f770bee2060dc2409e52168a879978c467 (diff) | |
| download | linux-426a930891cf17c5c16f12e8e2c8cb75c4cfff3c.tar.bz2 | |
erofs: use feature_incompat rather than requirements
As Christoph said [1], "This is only cosmetic, why
not stick to feature_compat and feature_incompat?"
In my thought, requirements means "incompatible"
instead of "feature" though.
[1] https://lore.kernel.org/r/20190902125109.GA9826@infradead.org/
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190904020912.63925-7-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/erofs')
| -rw-r--r-- | fs/erofs/decompressor.c | 3 | ||||
| -rw-r--r-- | fs/erofs/erofs_fs.h | 12 | ||||
| -rw-r--r-- | fs/erofs/internal.h | 2 | ||||
| -rw-r--r-- | fs/erofs/super.c | 10 |
4 files changed, 14 insertions, 13 deletions
diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index df349888f911..555c04730f87 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -129,7 +129,8 @@ static int lz4_decompress(struct z_erofs_decompress_req *rq, u8 *out) support_0padding = false; /* decompression inplace is only safe when 0padding is enabled */ - if (EROFS_SB(rq->sb)->requirements & EROFS_REQUIREMENT_LZ4_0PADDING) { + if (EROFS_SB(rq->sb)->feature_incompat & + EROFS_FEATURE_INCOMPAT_LZ4_0PADDING) { support_0padding = true; while (!src[inputmargin & ~PAGE_MASK]) diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 87d7ae82339a..b2aef3bc377d 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -11,17 +11,17 @@ #define EROFS_SUPER_OFFSET 1024 /* - * Any bits that aren't in EROFS_ALL_REQUIREMENTS should be - * incompatible with this kernel version. + * Any bits that aren't in EROFS_ALL_FEATURE_INCOMPAT should + * be incompatible with this kernel version. */ -#define EROFS_REQUIREMENT_LZ4_0PADDING 0x00000001 -#define EROFS_ALL_REQUIREMENTS EROFS_REQUIREMENT_LZ4_0PADDING +#define EROFS_FEATURE_INCOMPAT_LZ4_0PADDING 0x00000001 +#define EROFS_ALL_FEATURE_INCOMPAT EROFS_FEATURE_INCOMPAT_LZ4_0PADDING /* 128-byte erofs on-disk super block */ struct erofs_super_block { __le32 magic; /* file system magic number */ __le32 checksum; /* crc32c(super_block) */ - __le32 features; /* (aka. feature_compat) */ + __le32 feature_compat; __u8 blkszbits; /* support block_size == PAGE_SIZE only */ __u8 reserved; @@ -35,7 +35,7 @@ struct erofs_super_block { __le32 xattr_blkaddr; /* start block address of shared xattr area */ __u8 uuid[16]; /* 128-bit uuid for volume */ __u8 volume_name[16]; /* volume name */ - __le32 requirements; /* (aka. feature_incompat) */ + __le32 feature_incompat; __u8 reserved2[44]; }; diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 141ea424587d..7ff36f404ec3 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -96,7 +96,7 @@ struct erofs_sb_info { u8 uuid[16]; /* 128-bit uuid for volume */ u8 volume_name[16]; /* volume name */ - u32 requirements; + u32 feature_incompat; unsigned int mount_opt; diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 6603f0ba8905..6a7ab194783c 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -67,14 +67,14 @@ static void free_inode(struct inode *inode) static bool check_layout_compatibility(struct super_block *sb, struct erofs_super_block *layout) { - const unsigned int requirements = le32_to_cpu(layout->requirements); + const unsigned int feature = le32_to_cpu(layout->feature_incompat); - EROFS_SB(sb)->requirements = requirements; + EROFS_SB(sb)->feature_incompat = feature; /* check if current kernel meets all mandatory requirements */ - if (requirements & (~EROFS_ALL_REQUIREMENTS)) { - errln("unidentified requirements %x, please upgrade kernel version", - requirements & ~EROFS_ALL_REQUIREMENTS); + if (feature & (~EROFS_ALL_FEATURE_INCOMPAT)) { + errln("unidentified incompatible feature %x, please upgrade kernel version", + feature & ~EROFS_ALL_FEATURE_INCOMPAT); return false; } return true; |