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xfs: log refcount intent items

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Provide a mechanism for higher levels to create CUI/CUD items, submit
them to the log, and a stub function to deal with recovered CUI items.
These parts will be connected to the refcountbt in a later patch.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong
2016-10-03 09:11:21 -07:00
parent baf4bcacb7
commit f997ee2137
8 changed files with 375 additions and 0 deletions
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14
fs/xfs/libxfs/xfs_refcount.h
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@@ -27,4 +27,18 @@ extern int xfs_refcount_lookup_ge(struct xfs_btree_cur *cur,
extern int xfs_refcount_get_rec(struct xfs_btree_cur *cur,
struct xfs_refcount_irec *irec, int *stat);
enum xfs_refcount_intent_type {
XFS_REFCOUNT_INCREASE = 1,
XFS_REFCOUNT_DECREASE,
XFS_REFCOUNT_ALLOC_COW,
XFS_REFCOUNT_FREE_COW,
};
struct xfs_refcount_intent {
struct list_head ri_list;
enum xfs_refcount_intent_type ri_type;
xfs_fsblock_t ri_startblock;
xfs_extlen_t ri_blockcount;
};
#endif /* __XFS_REFCOUNT_H__ */