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xfs: define the on-disk refcount btree format

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Start constructing the refcount btree implementation by establishing
the on-disk format and everything needed to read, write, and
manipulate the refcount btree blocks.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong
2016-10-03 09:11:18 -07:00
parent af30dfa144
commit 1946b91cee
14 changed files with 319 additions and 11 deletions
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11
fs/xfs/xfs_trace.h
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@@ -39,16 +39,7 @@ struct xfs_buf_log_format;
struct xfs_inode_log_format;
struct xfs_bmbt_irec;
struct xfs_btree_cur;
#ifndef XFS_REFCOUNT_IREC_PLACEHOLDER
#define XFS_REFCOUNT_IREC_PLACEHOLDER
/* Placeholder definition to avoid breaking bisectability. */
struct xfs_refcount_irec {
xfs_agblock_t rc_startblock; /* starting block number */
xfs_extlen_t rc_blockcount; /* count of free blocks */
xfs_nlink_t rc_refcount; /* number of inodes linked here */
};
#endif
struct xfs_refcount_irec;
DECLARE_EVENT_CLASS(xfs_attr_list_class,
TP_PROTO(struct xfs_attr_list_context *ctx),