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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 19:11:18 +0300 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 19:11:18 +0300 |
| commit | 1946b91cee4fc8ae25450673e4d4f35e9b462e9e (patch) | |
| tree | e9cc737943e4e7b76c01cab92f88a6c49b49dc43 /fs/xfs/libxfs/xfs_btree.h | |
| parent | af30dfa14411e9df0e69c6e46e8c6c467b88229d (diff) | |
| download | linux-1946b91cee4fc8ae25450673e4d4f35e9b462e9e.tar.xz | |
xfs: define the on-disk refcount btree format
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>
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index e7ef1d9dbe6e..c2b01d1c79ee 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -49,6 +49,7 @@ union xfs_btree_key { struct xfs_inobt_key inobt; struct xfs_rmap_key rmap; struct xfs_rmap_key __rmap_bigkey[2]; + struct xfs_refcount_key refc; }; union xfs_btree_rec { @@ -57,6 +58,7 @@ union xfs_btree_rec { struct xfs_alloc_rec alloc; struct xfs_inobt_rec inobt; struct xfs_rmap_rec rmap; + struct xfs_refcount_rec refc; }; /* @@ -221,6 +223,15 @@ union xfs_btree_irec { struct xfs_bmbt_irec b; struct xfs_inobt_rec_incore i; struct xfs_rmap_irec r; + struct xfs_refcount_irec rc; +}; + +/* Per-AG btree private information. */ +union xfs_btree_cur_private { + struct { + unsigned long nr_ops; /* # record updates */ + int shape_changes; /* # of extent splits */ + } refc; }; /* @@ -247,6 +258,7 @@ typedef struct xfs_btree_cur struct xfs_buf *agbp; /* agf/agi buffer pointer */ struct xfs_defer_ops *dfops; /* deferred updates */ xfs_agnumber_t agno; /* ag number */ + union xfs_btree_cur_private priv; } a; struct { /* needed for BMAP */ struct xfs_inode *ip; /* pointer to our inode */ |