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xfs: make the btree cursor union members named structure

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we need to name the btree cursor private structures to be able
to pull them out of the deeply nested structure definition they are
in now.

Based on code extracted from a patchset by Darrick Wong.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Dave Chinner 2020-03-10 17:57:07 -07:00 committed by Darrick J. Wong
parent 352890735e
commit 68422d90da
1 changed files with 24 additions and 15 deletions
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39
fs/xfs/libxfs/xfs_btree.h
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@ -188,6 +188,27 @@ union xfs_btree_cur_private {
} abt;
};
/* Per-AG btree information. */
struct xfs_btree_cur_ag {
struct xfs_buf *agbp;
xfs_agnumber_t agno;
union xfs_btree_cur_private priv;
};
/* Btree-in-inode cursor information */
struct xfs_btree_cur_ino {
struct xfs_inode *ip;
int allocated;
short forksize;
char whichfork;
char flags;
/* We are converting a delalloc reservation */
#define XFS_BTCUR_BMBT_WASDEL (1 << 0)
/* For extent swap, ignore owner check in verifier */
#define XFS_BTCUR_BMBT_INVALID_OWNER (1 << 1)
};
/*
* Btree cursor structure.
* This collects all information needed by the btree code in one place.
@ -209,21 +230,9 @@ typedef struct xfs_btree_cur
xfs_btnum_t bc_btnum; /* identifies which btree type */
int bc_statoff; /* offset of btre stats array */
union {
struct { /* needed for BNO, CNT, INO */
struct xfs_buf *agbp; /* agf/agi buffer pointer */
xfs_agnumber_t agno; /* ag number */
union xfs_btree_cur_private priv;
} bc_ag;
struct { /* needed for BMAP */
struct xfs_inode *ip; /* pointer to our inode */
int allocated; /* count of alloced */
short forksize; /* fork's inode space */
char whichfork; /* data or attr fork */
char flags; /* flags */
#define XFS_BTCUR_BMBT_WASDEL (1 << 0) /* was delayed */
#define XFS_BTCUR_BMBT_INVALID_OWNER (1 << 1) /* for ext swap */
} bc_ino;
}; /* per-btree type data */
struct xfs_btree_cur_ag bc_ag;
struct xfs_btree_cur_ino bc_ino;
};
} xfs_btree_cur_t;
/* cursor flags */