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authorJoel Becker <joel.becker@oracle.com>2008-10-17 19:25:01 -0700
committerMark Fasheh <mfasheh@suse.com>2009-01-05 08:40:32 -0800
commit13723d00e374c2a6d6ccb5af6de965e89c3e1b01 (patch)
tree70dcd8f3d188bf2f62e4bf4b44a0662d8cd527ca /fs/ocfs2/journal.h
parentffdd7a54631f07918b75e324d86713a08c11ec06 (diff)
downloadop-kernel-dev-13723d00e374c2a6d6ccb5af6de965e89c3e1b01.zip
op-kernel-dev-13723d00e374c2a6d6ccb5af6de965e89c3e1b01.tar.gz
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
The per-metadata-type ocfs2_journal_access_*() functions hook up jbd2 commit triggers and allow us to compute metadata ecc right before the buffers are written out. This commit provides ecc for inodes, extent blocks, group descriptors, and quota blocks. It is not safe to use extened attributes and metaecc at the same time yet. The ocfs2_extent_tree and ocfs2_path abstractions in alloc.c both hide the type of block at their root. Before, it didn't matter, but now the root block must use the appropriate ocfs2_journal_access_*() function. To keep this abstract, the structures now have a pointer to the matching journal_access function and a wrapper call to call it. A few places use naked ocfs2_write_block() calls instead of adding the blocks to the journal. We make sure to calculate their checksum and ecc before the write. Since we pass around the journal_access functions. Let's typedef them in ocfs2.h. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/journal.h')
-rw-r--r--fs/ocfs2/journal.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index bca370d..3c3532e 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -247,9 +247,10 @@ int ocfs2_extend_trans(handle_t *handle, int nblocks);
#define OCFS2_JOURNAL_ACCESS_WRITE 1
#define OCFS2_JOURNAL_ACCESS_UNDO 2
+
/* ocfs2_inode */
int ocfs2_journal_access_di(handle_t *handle, struct inode *inode,
- struct buffer_head *bh, int type);
+ struct buffer_head *bh, int type);
/* ocfs2_extent_block */
int ocfs2_journal_access_eb(handle_t *handle, struct inode *inode,
struct buffer_head *bh, int type);
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