/* Allocate a block in an AG. */
int
xrep_alloc_ag_block(
struct xfs_scrub *sc,
const struct xfs_owner_info *oinfo,
xfs_fsblock_t *fsbno,
enum xfs_ag_resv_type resv)
{
struct xfs_alloc_arg args = {0};
xfs_agblock_t bno;
int error;
switch (resv) {
case XFS_AG_RESV_AGFL:
case XFS_AG_RESV_RMAPBT:
error = xfs_alloc_get_freelist(sc->tp, sc->sa.agf_bp, &bno, 1);
if (error)
return error;
if (bno == NULLAGBLOCK)
return -ENOSPC;
xfs_extent_busy_reuse(sc->mp, sc->sa.agno, bno,
1, false);
*fsbno = XFS_AGB_TO_FSB(sc->mp, sc->sa.agno, bno);
if (resv == XFS_AG_RESV_RMAPBT)
xfs_ag_resv_rmapbt_alloc(sc->mp, sc->sa.agno);
return 0;
default:
break;
}
args.tp = sc->tp;
args.mp = sc->mp;
args.oinfo = *oinfo;
args.fsbno = XFS_AGB_TO_FSB(args.mp, sc->sa.agno, 0);
args.minlen = 1;
args.maxlen = 1;
args.prod = 1;
args.type = XFS_ALLOCTYPE_THIS_AG;
args.resv = resv;
error = xfs_alloc_vextent(&args);
if (error)
return error;
if (args.fsbno == NULLFSBLOCK)
return -ENOSPC;
ASSERT(args.len == 1);
*fsbno = args.fsbno;
return 0;
}
}
STATIC int
xfs_rmapbt_alloc_block(
struct xfs_btree_cur *cur,
union xfs_btree_ptr *start,
union xfs_btree_ptr *new,
int *stat)
{
struct xfs_buf *agbp = cur->bc_private.a.agbp;
struct xfs_agf *agf = XFS_BUF_TO_AGF(agbp);
int error;
xfs_agblock_t bno;
/* Allocate the new block from the freelist. If we can't, give up. */
error = xfs_alloc_get_freelist(cur->bc_tp, cur->bc_private.a.agbp,
&bno, 1);
if (error)
return error;
trace_xfs_rmapbt_alloc_block(cur->bc_mp, cur->bc_private.a.agno,
bno, 1);
if (bno == NULLAGBLOCK) {
*stat = 0;
return 0;
}
xfs_extent_busy_reuse(cur->bc_mp, cur->bc_private.a.agno, bno, 1,
false);
xfs_trans_agbtree_delta(cur->bc_tp, 1);
new->s = cpu_to_be32(bno);