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authorJoel Becker <joel.becker@oracle.com>2008-10-17 22:25:01 -0400
committerMark Fasheh <mfasheh@suse.com>2009-01-05 11:40:32 -0500
commit13723d00e374c2a6d6ccb5af6de965e89c3e1b01 (patch)
tree70dcd8f3d188bf2f62e4bf4b44a0662d8cd527ca /fs/ocfs2/ocfs2.h
parentffdd7a54631f07918b75e324d86713a08c11ec06 (diff)
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/ocfs2.h')
-rw-r--r--fs/ocfs2/ocfs2.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 2bb389fe7397..bad87d0a03c9 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -339,6 +339,10 @@ struct ocfs2_super
339 339
340#define OCFS2_SB(sb) ((struct ocfs2_super *)(sb)->s_fs_info) 340#define OCFS2_SB(sb) ((struct ocfs2_super *)(sb)->s_fs_info)
341 341
342/* Useful typedef for passing around journal access functions */
343typedef int (*ocfs2_journal_access_func)(handle_t *handle, struct inode *inode,
344 struct buffer_head *bh, int type);
345
342static inline int ocfs2_should_order_data(struct inode *inode) 346static inline int ocfs2_should_order_data(struct inode *inode)
343{ 347{
344 if (!S_ISREG(inode->i_mode)) 348 if (!S_ISREG(inode->i_mode))