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xfs: add CRC infrastructure

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- add a mount feature bit for CRC enabled filesystems
 - add some helpers for generating and verifying the CRCs
 - add a copy_uuid helper

The checksumming helpers are loosely based on similar ones in sctp,
all other bits come from Dave Chinner.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig
2012-11-16 09:20:37 +11:00
committed by Ben Myers
parent 1813dd6405
commit bc02e8693d
5 changed files with 78 additions and 0 deletions
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fs/xfs/xfs_linux.h
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@ -44,6 +44,7 @@
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/crc32c.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/file.h>