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| author | Joel Becker | 2008-10-17 02:54:25 +0200 |
|---|---|---|
| committer | Mark Fasheh | 2009-01-05 17:40:31 +0100 |
| commit | 70ad1ba7b48364d758a112df0823edc5ca6632aa (patch) | |
| tree | 0ec30f4a812c1e66e3e3e7457eca1db8a451549a /fs/ocfs2/ocfs2.h | |
| parent | ocfs2: Add the on-disk structures for metadata checksums. (diff) | |
| download | kernel-qcow2-linux-70ad1ba7b48364d758a112df0823edc5ca6632aa.tar.gz kernel-qcow2-linux-70ad1ba7b48364d758a112df0823edc5ca6632aa.tar.xz kernel-qcow2-linux-70ad1ba7b48364d758a112df0823edc5ca6632aa.zip | |
ocfs2: Add the underlying blockcheck code.
This is the code that computes crc32 and ecc for ocfs2 metadata blocks.
There are high-level functions that check whether the filesystem has the
ecc feature, mid-level functions that work on a single block or array of
buffer_heads, and the low-level ecc hamming code that can handle
multiple buffers like crc32_le().
It's not hooked up to the filesystem yet.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/ocfs2.h')
| -rw-r--r-- | fs/ocfs2/ocfs2.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 5c777988042f..2bb389fe7397 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -382,6 +382,13 @@ static inline int ocfs2_supports_xattr(struct ocfs2_super *osb) return 0; } +static inline int ocfs2_meta_ecc(struct ocfs2_super *osb) +{ + if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_META_ECC) + return 1; + return 0; +} + /* set / clear functions because cluster events can make these happen * in parallel so we want the transitions to be atomic. this also * means that any future flags osb_flags must be protected by spinlock @@ -615,5 +622,6 @@ static inline s16 ocfs2_get_inode_steal_slot(struct ocfs2_super *osb) #define ocfs2_clear_bit ext2_clear_bit #define ocfs2_test_bit ext2_test_bit #define ocfs2_find_next_zero_bit ext2_find_next_zero_bit +#define ocfs2_find_next_bit ext2_find_next_bit #endif /* OCFS2_H */ |