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xfs: implement deferred bmbt map/unmap operations

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Implement deferred versions of the inode block map/unmap functions.
These will be used in subsequent patches to make reflink operations
atomic.

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 09:11:28 -07:00
parent 4847acf868
commit 9f3afb57d5
9 changed files with 393 additions and 3 deletions
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9
fs/xfs/libxfs/xfs_bmap.h
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@@ -231,4 +231,13 @@ struct xfs_bmap_intent {
struct xfs_bmbt_irec bi_bmap;
};
int xfs_bmap_finish_one(struct xfs_trans *tp, struct xfs_defer_ops *dfops,
struct xfs_inode *ip, enum xfs_bmap_intent_type type,
int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
xfs_filblks_t blockcount, xfs_exntst_t state);
int xfs_bmap_map_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
struct xfs_inode *ip, struct xfs_bmbt_irec *imap);
int xfs_bmap_unmap_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
struct xfs_inode *ip, struct xfs_bmbt_irec *imap);
#endif /* __XFS_BMAP_H__ */