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authorJoel Becker <joel.becker@oracle.com>2008-10-17 04:54:25 +0400
committerMark Fasheh <mfasheh@suse.com>2009-01-05 19:40:31 +0300
commit70ad1ba7b48364d758a112df0823edc5ca6632aa (patch)
tree0ec30f4a812c1e66e3e3e7457eca1db8a451549a /fs/ocfs2/ocfs2.h
parentab552d54673f262d7f70014003d3928d29270f22 (diff)
downloadlinux-70ad1ba7b48364d758a112df0823edc5ca6632aa.tar.xz
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.h8
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 */