BMC/Intel-BMC/linux.git/fs/ocfs2/blockcheck.h, branch dev

ocfs2: Add statistics for the checksum and ecc operations.

2009-06-04T02:15:36+00:00

It would be nice to know how often we get checksum failures. Even better, how many of them we can fix with the single bit ecc. So, we add a statistics structure. The structure can be installed into debugfs wherever the user wants. For ocfs2, we'll put it in the superblock-specific debugfs directory and pass it down from our higher-level functions. The stats are only registered with debugfs when the filesystem supports metadata ecc. Signed-off-by: Joel Becker

ocfs2: Add the underlying blockcheck code.

2009-01-05T16:40:31+00:00

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 Cc: Christoph Hellwig Signed-off-by: Mark Fasheh