/*
* Allocate/initialize a cursor for the by-number freespace btree.
*/
- bno_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
- args->agno, XFS_BTNUM_BNO, NULL, 0);
+ bno_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
+ args->agno, XFS_BTNUM_BNO);
/*
* Lookup bno and minlen in the btree (minlen is irrelevant, really).
* Look for the closest free block <= bno, it must contain bno
* We are allocating agbno for rlen [agbno .. end]
* Allocate/initialize a cursor for the by-size btree.
*/
- cnt_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
- args->agno, XFS_BTNUM_CNT, NULL, 0);
+ cnt_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
+ args->agno, XFS_BTNUM_CNT);
ASSERT(args->agbno + args->len <=
be32_to_cpu(XFS_BUF_TO_AGF(args->agbp)->agf_length));
if ((error = xfs_alloc_fixup_trees(cnt_cur, bno_cur, fbno, flen,
/*
* Get a cursor for the by-size btree.
*/
- cnt_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
- args->agno, XFS_BTNUM_CNT, NULL, 0);
+ cnt_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
+ args->agno, XFS_BTNUM_CNT);
ltlen = 0;
bno_cur_lt = bno_cur_gt = NULL;
/*
/*
* Set up a cursor for the by-bno tree.
*/
- bno_cur_lt = xfs_btree_init_cursor(args->mp, args->tp,
- args->agbp, args->agno, XFS_BTNUM_BNO, NULL, 0);
+ bno_cur_lt = xfs_allocbt_init_cursor(args->mp, args->tp,
+ args->agbp, args->agno, XFS_BTNUM_BNO);
/*
* Fix up the btree entries.
*/
/*
* Allocate and initialize the cursor for the leftward search.
*/
- bno_cur_lt = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
- args->agno, XFS_BTNUM_BNO, NULL, 0);
+ bno_cur_lt = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
+ args->agno, XFS_BTNUM_BNO);
/*
* Lookup <= bno to find the leftward search's starting point.
*/
/*
* Allocate and initialize a cursor for the by-size btree.
*/
- cnt_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
- args->agno, XFS_BTNUM_CNT, NULL, 0);
+ cnt_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
+ args->agno, XFS_BTNUM_CNT);
bno_cur = NULL;
/*
* Look for an entry >= maxlen+alignment-1 blocks.
/*
* Allocate and initialize a cursor for the by-block tree.
*/
- bno_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
- args->agno, XFS_BTNUM_BNO, NULL, 0);
+ bno_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
+ args->agno, XFS_BTNUM_BNO);
if ((error = xfs_alloc_fixup_trees(cnt_cur, bno_cur, fbno, flen,
rbno, rlen, XFSA_FIXUP_CNT_OK)))
goto error0;
/*
* Allocate and initialize a cursor for the by-block btree.
*/
- bno_cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_BNO, NULL,
- 0);
+ bno_cur = xfs_allocbt_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_BNO);
cnt_cur = NULL;
/*
* Look for a neighboring block on the left (lower block numbers)
/*
* Now allocate and initialize a cursor for the by-size tree.
*/
- cnt_cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_CNT, NULL,
- 0);
+ cnt_cur = xfs_allocbt_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_CNT);
/*
* Have both left and right contiguous neighbors.
* Merge all three into a single free block.
}
return 0;
}
+
+STATIC struct xfs_btree_cur *
+xfs_allocbt_dup_cursor(
+ struct xfs_btree_cur *cur)
+{
+ return xfs_allocbt_init_cursor(cur->bc_mp, cur->bc_tp,
+ cur->bc_private.a.agbp, cur->bc_private.a.agno,
+ cur->bc_btnum);
+}
+
+static const struct xfs_btree_ops xfs_allocbt_ops = {
+ .dup_cursor = xfs_allocbt_dup_cursor,
+};
+
+/*
+ * Allocate a new allocation btree cursor.
+ */
+struct xfs_btree_cur * /* new alloc btree cursor */
+xfs_allocbt_init_cursor(
+ struct xfs_mount *mp, /* file system mount point */
+ struct xfs_trans *tp, /* transaction pointer */
+ struct xfs_buf *agbp, /* buffer for agf structure */
+ xfs_agnumber_t agno, /* allocation group number */
+ xfs_btnum_t btnum) /* btree identifier */
+{
+ struct xfs_agf *agf = XFS_BUF_TO_AGF(agbp);
+ struct xfs_btree_cur *cur;
+
+ ASSERT(btnum == XFS_BTNUM_BNO || btnum == XFS_BTNUM_CNT);
+
+ cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP);
+
+ cur->bc_tp = tp;
+ cur->bc_mp = mp;
+ cur->bc_nlevels = be32_to_cpu(agf->agf_levels[btnum]);
+ cur->bc_btnum = btnum;
+ cur->bc_blocklog = mp->m_sb.sb_blocklog;
+
+ cur->bc_ops = &xfs_allocbt_ops;
+
+ cur->bc_private.a.agbp = agbp;
+ cur->bc_private.a.agno = agno;
+
+ return cur;
+}
extern int xfs_alloc_update(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len);
+
+extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct xfs_mount *,
+ struct xfs_trans *, struct xfs_buf *,
+ xfs_agnumber_t, xfs_btnum_t);
+
#endif /* __XFS_ALLOC_BTREE_H__ */
if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip))
*flags |= XFS_ILOG_DBROOT;
else {
- cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
- XFS_DATA_FORK);
+ cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK);
cur->bc_private.b.flist = flist;
cur->bc_private.b.firstblock = *firstblock;
if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat)))
* Need a cursor. Can't allocate until bb_level is filled in.
*/
mp = ip->i_mount;
- cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
- whichfork);
+ cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
cur->bc_private.b.firstblock = *firstblock;
cur->bc_private.b.flist = flist;
cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;
if (abno == NULLFSBLOCK)
break;
if ((ifp->if_flags & XFS_IFBROOT) && !cur) {
- cur = xfs_btree_init_cursor(mp,
- tp, NULL, 0, XFS_BTNUM_BMAP,
+ cur = xfs_bmbt_init_cursor(mp, tp,
ip, whichfork);
cur->bc_private.b.firstblock =
*firstblock;
*/
ASSERT(mval->br_blockcount <= len);
if ((ifp->if_flags & XFS_IFBROOT) && !cur) {
- cur = xfs_btree_init_cursor(mp,
- tp, NULL, 0, XFS_BTNUM_BMAP,
- ip, whichfork);
+ cur = xfs_bmbt_init_cursor(mp,
+ tp, ip, whichfork);
cur->bc_private.b.firstblock =
*firstblock;
cur->bc_private.b.flist = flist;
logflags = 0;
if (ifp->if_flags & XFS_IFBROOT) {
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
- cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
- whichfork);
+ cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
cur->bc_private.b.firstblock = *firstblock;
cur->bc_private.b.flist = flist;
cur->bc_private.b.flags = 0;
}
return 0;
}
+
+
+STATIC struct xfs_btree_cur *
+xfs_bmbt_dup_cursor(
+ struct xfs_btree_cur *cur)
+{
+ struct xfs_btree_cur *new;
+
+ new = xfs_bmbt_init_cursor(cur->bc_mp, cur->bc_tp,
+ cur->bc_private.b.ip, cur->bc_private.b.whichfork);
+
+ /*
+ * Copy the firstblock, flist, and flags values,
+ * since init cursor doesn't get them.
+ */
+ new->bc_private.b.firstblock = cur->bc_private.b.firstblock;
+ new->bc_private.b.flist = cur->bc_private.b.flist;
+ new->bc_private.b.flags = cur->bc_private.b.flags;
+
+ return new;
+}
+
+static const struct xfs_btree_ops xfs_bmbt_ops = {
+ .dup_cursor = xfs_bmbt_dup_cursor,
+};
+
+/*
+ * Allocate a new bmap btree cursor.
+ */
+struct xfs_btree_cur * /* new bmap btree cursor */
+xfs_bmbt_init_cursor(
+ struct xfs_mount *mp, /* file system mount point */
+ struct xfs_trans *tp, /* transaction pointer */
+ struct xfs_inode *ip, /* inode owning the btree */
+ int whichfork) /* data or attr fork */
+{
+ struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
+ struct xfs_btree_cur *cur;
+
+ cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP);
+
+ cur->bc_tp = tp;
+ cur->bc_mp = mp;
+ cur->bc_nlevels = be16_to_cpu(ifp->if_broot->bb_level) + 1;
+ cur->bc_btnum = XFS_BTNUM_BMAP;
+ cur->bc_blocklog = mp->m_sb.sb_blocklog;
+
+ cur->bc_ops = &xfs_bmbt_ops;
+
+ cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork);
+ cur->bc_private.b.ip = ip;
+ cur->bc_private.b.firstblock = NULLFSBLOCK;
+ cur->bc_private.b.flist = NULL;
+ cur->bc_private.b.allocated = 0;
+ cur->bc_private.b.flags = 0;
+ cur->bc_private.b.whichfork = whichfork;
+
+ return cur;
+}
struct xfs_btree_lblock;
struct xfs_mount;
struct xfs_inode;
+struct xfs_trans;
/*
* Bmap root header, on-disk form only.
extern int xfs_bmbt_update(struct xfs_btree_cur *, xfs_fileoff_t,
xfs_fsblock_t, xfs_filblks_t, xfs_exntst_t);
+extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *,
+ struct xfs_trans *, struct xfs_inode *, int);
+
#endif /* __KERNEL__ */
#endif /* __XFS_BMAP_BTREE_H__ */
tp = cur->bc_tp;
mp = cur->bc_mp;
+
/*
* Allocate a new cursor like the old one.
*/
- new = xfs_btree_init_cursor(mp, tp, cur->bc_private.a.agbp,
- cur->bc_private.a.agno, cur->bc_btnum, cur->bc_private.b.ip,
- cur->bc_private.b.whichfork);
+ new = cur->bc_ops->dup_cursor(cur);
+
/*
* Copy the record currently in the cursor.
*/
new->bc_rec = cur->bc_rec;
+
/*
* For each level current, re-get the buffer and copy the ptr value.
*/
} else
new->bc_bufs[i] = NULL;
}
- /*
- * For bmap btrees, copy the firstblock, flist, and flags values,
- * since init cursor doesn't get them.
- */
- if (new->bc_btnum == XFS_BTNUM_BMAP) {
- new->bc_private.b.firstblock = cur->bc_private.b.firstblock;
- new->bc_private.b.flist = cur->bc_private.b.flist;
- new->bc_private.b.flags = cur->bc_private.b.flags;
- }
*ncur = new;
return 0;
}
return bp;
}
-/*
- * Allocate a new btree cursor.
- * The cursor is either for allocation (A) or bmap (B) or inodes (I).
- */
-xfs_btree_cur_t * /* new btree cursor */
-xfs_btree_init_cursor(
- xfs_mount_t *mp, /* file system mount point */
- xfs_trans_t *tp, /* transaction pointer */
- xfs_buf_t *agbp, /* (A only) buffer for agf structure */
- /* (I only) buffer for agi structure */
- xfs_agnumber_t agno, /* (AI only) allocation group number */
- xfs_btnum_t btnum, /* btree identifier */
- xfs_inode_t *ip, /* (B only) inode owning the btree */
- int whichfork) /* (B only) data or attr fork */
-{
- xfs_agf_t *agf; /* (A) allocation group freespace */
- xfs_agi_t *agi; /* (I) allocation group inodespace */
- xfs_btree_cur_t *cur; /* return value */
- xfs_ifork_t *ifp; /* (I) inode fork pointer */
- int nlevels=0; /* number of levels in the btree */
-
- ASSERT(xfs_btree_cur_zone != NULL);
- /*
- * Allocate a new cursor.
- */
- cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP);
- /*
- * Deduce the number of btree levels from the arguments.
- */
- switch (btnum) {
- case XFS_BTNUM_BNO:
- case XFS_BTNUM_CNT:
- agf = XFS_BUF_TO_AGF(agbp);
- nlevels = be32_to_cpu(agf->agf_levels[btnum]);
- break;
- case XFS_BTNUM_BMAP:
- ifp = XFS_IFORK_PTR(ip, whichfork);
- nlevels = be16_to_cpu(ifp->if_broot->bb_level) + 1;
- break;
- case XFS_BTNUM_INO:
- agi = XFS_BUF_TO_AGI(agbp);
- nlevels = be32_to_cpu(agi->agi_level);
- break;
- default:
- ASSERT(0);
- }
- /*
- * Fill in the common fields.
- */
- cur->bc_tp = tp;
- cur->bc_mp = mp;
- cur->bc_nlevels = nlevels;
- cur->bc_btnum = btnum;
- cur->bc_blocklog = mp->m_sb.sb_blocklog;
- /*
- * Fill in private fields.
- */
- switch (btnum) {
- case XFS_BTNUM_BNO:
- case XFS_BTNUM_CNT:
- /*
- * Allocation btree fields.
- */
- cur->bc_private.a.agbp = agbp;
- cur->bc_private.a.agno = agno;
- break;
- case XFS_BTNUM_INO:
- /*
- * Inode allocation btree fields.
- */
- cur->bc_private.a.agbp = agbp;
- cur->bc_private.a.agno = agno;
- break;
- case XFS_BTNUM_BMAP:
- /*
- * Bmap btree fields.
- */
- cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork);
- cur->bc_private.b.ip = ip;
- cur->bc_private.b.firstblock = NULLFSBLOCK;
- cur->bc_private.b.flist = NULL;
- cur->bc_private.b.allocated = 0;
- cur->bc_private.b.flags = 0;
- cur->bc_private.b.whichfork = whichfork;
- break;
- default:
- ASSERT(0);
- }
- return cur;
-}
-
/*
* Check for the cursor referring to the last block at the given level.
*/
#define XFS_BTREE_MAXLEVELS 8 /* max of all btrees */
+struct xfs_btree_ops {
+ /* cursor operations */
+ struct xfs_btree_cur *(*dup_cursor)(struct xfs_btree_cur *);
+};
+
/*
* Btree cursor structure.
* This collects all information needed by the btree code in one place.
{
struct xfs_trans *bc_tp; /* transaction we're in, if any */
struct xfs_mount *bc_mp; /* file system mount struct */
+ const struct xfs_btree_ops *bc_ops;
union {
xfs_alloc_rec_incore_t a;
xfs_bmbt_irec_t b;
xfs_agblock_t agbno, /* allocation group block number */
uint lock); /* lock flags for get_buf */
-/*
- * Allocate a new btree cursor.
- * The cursor is either for allocation (A) or bmap (B).
- */
-xfs_btree_cur_t * /* new btree cursor */
-xfs_btree_init_cursor(
- struct xfs_mount *mp, /* file system mount point */
- struct xfs_trans *tp, /* transaction pointer */
- struct xfs_buf *agbp, /* (A only) buffer for agf structure */
- xfs_agnumber_t agno, /* (A only) allocation group number */
- xfs_btnum_t btnum, /* btree identifier */
- struct xfs_inode *ip, /* (B only) inode owning the btree */
- int whichfork); /* (B only) data/attr fork */
-
/*
* Check for the cursor referring to the last block at the given level.
*/
/*
* Insert records describing the new inode chunk into the btree.
*/
- cur = xfs_btree_init_cursor(args.mp, tp, agbp, agno,
- XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(args.mp, tp, agbp, agno);
for (thisino = newino;
thisino < newino + newlen;
thisino += XFS_INODES_PER_CHUNK) {
*/
agno = tagno;
*IO_agbp = NULL;
- cur = xfs_btree_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno),
- XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno));
/*
* If pagino is 0 (this is the root inode allocation) use newino.
* This must work because we've just allocated some.
/*
* Initialize the cursor.
*/
- cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_INO,
- (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, tp, agbp, agno);
#ifdef DEBUG
if (cur->bc_nlevels == 1) {
int freecount = 0;
#endif /* DEBUG */
return error;
}
- cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_INO,
- (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, tp, agbp, agno);
if ((error = xfs_inobt_lookup_le(cur, agino, 0, 0, &i))) {
#ifdef DEBUG
xfs_fs_cmn_err(CE_ALERT, mp, "xfs_dilocate: "
}
return 0;
}
+
+STATIC struct xfs_btree_cur *
+xfs_inobt_dup_cursor(
+ struct xfs_btree_cur *cur)
+{
+ return xfs_inobt_init_cursor(cur->bc_mp, cur->bc_tp,
+ cur->bc_private.a.agbp, cur->bc_private.a.agno);
+}
+
+static const struct xfs_btree_ops xfs_inobt_ops = {
+ .dup_cursor = xfs_inobt_dup_cursor,
+};
+
+/*
+ * Allocate a new inode btree cursor.
+ */
+struct xfs_btree_cur * /* new inode btree cursor */
+xfs_inobt_init_cursor(
+ struct xfs_mount *mp, /* file system mount point */
+ struct xfs_trans *tp, /* transaction pointer */
+ struct xfs_buf *agbp, /* buffer for agi structure */
+ xfs_agnumber_t agno) /* allocation group number */
+{
+ struct xfs_agi *agi = XFS_BUF_TO_AGI(agbp);
+ struct xfs_btree_cur *cur;
+
+ cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP);
+
+ cur->bc_tp = tp;
+ cur->bc_mp = mp;
+ cur->bc_nlevels = be32_to_cpu(agi->agi_level);
+ cur->bc_btnum = XFS_BTNUM_INO;
+ cur->bc_blocklog = mp->m_sb.sb_blocklog;
+
+ cur->bc_ops = &xfs_inobt_ops;
+
+ cur->bc_private.a.agbp = agbp;
+ cur->bc_private.a.agno = agno;
+
+ return cur;
+}
extern int xfs_inobt_update(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free);
+
+extern struct xfs_btree_cur *xfs_inobt_init_cursor(struct xfs_mount *,
+ struct xfs_trans *, struct xfs_buf *, xfs_agnumber_t);
+
#endif /* __XFS_IALLOC_BTREE_H__ */
/*
* Allocate and initialize a btree cursor for ialloc btree.
*/
- cur = xfs_btree_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_INO,
- (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
irbp = irbuf;
irbufend = irbuf + nirbuf;
end_of_ag = 0;
agino = 0;
continue;
}
- cur = xfs_btree_init_cursor(mp, NULL, agbp, agno,
- XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
+ cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
error = xfs_inobt_lookup_ge(cur, agino, 0, 0, &tmp);
if (error) {
xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
git.openpandora.org / pandora-kernel.git / commitdiff