xfs/libxfs/xfs_refcount.c

537 	struct xfs_refcount_irec	*cleft,
545 			cur->bc_ag.pag->pag_agno, left, cleft);
547 	ASSERT(left->rc_domain == cleft->rc_domain);
549 	/* If the extent at agbno (cleft) wasn't synthesized, remove it. */
550 	if (cleft->rc_refcount > 1) {
551 		error = xfs_refcount_lookup_le(cur, cleft->rc_domain,
552 				cleft->rc_startblock, &found_rec);
582 	left->rc_blockcount += cleft->rc_blockcount;
587 	*agbno += cleft->rc_blockcount;
588 	*aglen -= cleft->rc_blockcount;
667  * Find the left extent and the one after it (cleft).  This function assumes
674 	struct xfs_refcount_irec	*cleft,
683 	left->rc_startblock = cleft->rc_startblock = NULLAGBLOCK;
724 			*cleft = tmp;
734 			cleft->rc_startblock = agbno;
735 			cleft->rc_blockcount = min(aglen,
737 			cleft->rc_refcount = 1;
738 			cleft->rc_domain = domain;
746 		cleft->rc_startblock = agbno;
747 		cleft->rc_blockcount = aglen;
748 		cleft->rc_refcount = 1;
749 		cleft->rc_domain = domain;
752 			left, cleft, agbno);
878 	const struct xfs_refcount_irec	*cleft,
894 	    !xfs_refc_valid(cleft) || !xfs_refc_valid(cright))
902 	new_refcount = xfs_refc_merge_refcount(cleft, adjust);
913 	ulen += cleft->rc_blockcount + right->rc_blockcount;
924 	const struct xfs_refcount_irec	*cleft,
932 	 * start of the range.  If this is true, find_left made left and cleft
935 	if (!xfs_refc_valid(left) || !xfs_refc_valid(cleft))
939 	new_refcount = xfs_refc_merge_refcount(cleft, adjust);
948 	ulen += cleft->rc_blockcount;
1001 	struct xfs_refcount_irec	left = {0}, cleft = {0};
1009 	 * Find the extent just below agbno [left], just above agbno [cleft],
1013 	error = xfs_refcount_find_left_extents(cur, &left, &cleft, domain,
1026 	cequal = (cleft.rc_startblock == cright.rc_startblock) &&
1027 		 (cleft.rc_blockcount == cright.rc_blockcount);
1029 	/* Try to merge left, cleft, and right.  cleft must == cright. */
1030 	if (xfs_refc_want_merge_center(&left, &cleft, &cright, &right, cequal,
1033 		return xfs_refcount_merge_center_extents(cur, &left, &cleft,
1037 	/* Try to merge left and cleft. */
1038 	if (xfs_refc_want_merge_left(&left, &cleft, adjust)) {
1040 		error = xfs_refcount_merge_left_extent(cur, &left, &cleft,
1046 		 * If we just merged left + cleft and cleft == cright,