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xfs: log bmap intent items

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Provide a mechanism for higher levels to create BUI/BUD items, submit
them to the log, and a stub function to deal with recovered BUI items.
These parts will be connected to the rmapbt 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 09:11:26 -07:00
parent 6413a01420
commit 77d61fe45e
7 changed files with 358 additions and 0 deletions
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13
fs/xfs/libxfs/xfs_bmap.h
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@@ -207,4 +207,17 @@ int xfs_bmapi_reserve_delalloc(struct xfs_inode *ip, xfs_fileoff_t aoff,
xfs_filblks_t len, struct xfs_bmbt_irec *got,
struct xfs_bmbt_irec *prev, xfs_extnum_t *lastx, int eof);
enum xfs_bmap_intent_type {
XFS_BMAP_MAP = 1,
XFS_BMAP_UNMAP,
};
struct xfs_bmap_intent {
struct list_head bi_list;
enum xfs_bmap_intent_type bi_type;
struct xfs_inode *bi_owner;
int bi_whichfork;
struct xfs_bmbt_irec bi_bmap;
};
#endif /* __XFS_BMAP_H__ */