xfs: pass refcount intent directly through the log intent code

Source kernel commit: 0b11553ec54a6d88907e60d0595dbcef98539747

Pass the incore refcount intent through the CUI logging code instead of
repeatedly boxing and unboxing parameters.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

3 files changed, 55 insertions, 75 deletions

diff --git a/libxfs/defer_item.c b/libxfs/defer_item.c
index 56f44e3210..b95b54e524 100644
--- a/libxfs/defer_item.c
+++ b/libxfs/defer_item.c
@@ -305,27 +305,19 @@ xfs_refcount_update_finish_item(
 	struct list_head		*item,
 	struct xfs_btree_cur		**state)
 {
-	struct xfs_refcount_intent	*refc;
-	xfs_fsblock_t			new_fsb;
-	xfs_extlen_t			new_aglen;
+	struct xfs_refcount_intent	*ri;
 	int				error;
 
-	refc = container_of(item, struct xfs_refcount_intent, ri_list);
-	error = xfs_refcount_finish_one(tp,
-			refc->ri_type,
-			refc->ri_startblock,
-			refc->ri_blockcount,
-			&new_fsb, &new_aglen,
-			state);
+	ri = container_of(item, struct xfs_refcount_intent, ri_list);
+	error = xfs_refcount_finish_one(tp, ri, state);
+
 	/* Did we run out of reservation?  Requeue what we didn't finish. */
-	if (!error && new_aglen > 0) {
-		ASSERT(refc->ri_type == XFS_REFCOUNT_INCREASE ||
-		       refc->ri_type == XFS_REFCOUNT_DECREASE);
-		refc->ri_startblock = new_fsb;
-		refc->ri_blockcount = new_aglen;
+	if (!error && ri->ri_blockcount > 0) {
+		ASSERT(ri->ri_type == XFS_REFCOUNT_INCREASE ||
+		       ri->ri_type == XFS_REFCOUNT_DECREASE);
 		return -EAGAIN;
 	}
-	kmem_cache_free(xfs_refcount_intent_cache, refc);
+	kmem_cache_free(xfs_refcount_intent_cache, ri);
 	return error;
 }
 
@@ -341,10 +333,10 @@ STATIC void
 xfs_refcount_update_cancel_item(
 	struct list_head		*item)
 {
-	struct xfs_refcount_intent	*refc;
+	struct xfs_refcount_intent	*ri;
 
-	refc = container_of(item, struct xfs_refcount_intent, ri_list);
-	kmem_cache_free(xfs_refcount_intent_cache, refc);
+	ri = container_of(item, struct xfs_refcount_intent, ri_list);
+	kmem_cache_free(xfs_refcount_intent_cache, ri);
 }
 
 const struct xfs_defer_op_type xfs_refcount_update_defer_type = {
diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c
index 29258bddbc..e9954f4b70 100644
--- a/libxfs/xfs_refcount.c
+++ b/libxfs/xfs_refcount.c
@@ -1212,37 +1212,33 @@ out_error:
 STATIC int
 xfs_refcount_adjust(
 	struct xfs_btree_cur	*cur,
-	xfs_agblock_t		agbno,
-	xfs_extlen_t		aglen,
-	xfs_agblock_t		*new_agbno,
-	xfs_extlen_t		*new_aglen,
+	xfs_agblock_t		*agbno,
+	xfs_extlen_t		*aglen,
 	enum xfs_refc_adjust_op	adj)
 {
 	bool			shape_changed;
 	int			shape_changes = 0;
 	int			error;
 
-	*new_agbno = agbno;
-	*new_aglen = aglen;
 	if (adj == XFS_REFCOUNT_ADJUST_INCREASE)
-		trace_xfs_refcount_increase(cur->bc_mp, cur->bc_ag.pag->pag_agno,
-				agbno, aglen);
+		trace_xfs_refcount_increase(cur->bc_mp,
+				cur->bc_ag.pag->pag_agno, *agbno, *aglen);
 	else
-		trace_xfs_refcount_decrease(cur->bc_mp, cur->bc_ag.pag->pag_agno,
-				agbno, aglen);
+		trace_xfs_refcount_decrease(cur->bc_mp,
+				cur->bc_ag.pag->pag_agno, *agbno, *aglen);
 
 	/*
 	 * Ensure that no rcextents cross the boundary of the adjustment range.
 	 */
 	error = xfs_refcount_split_extent(cur, XFS_REFC_DOMAIN_SHARED,
-			agbno, &shape_changed);
+			*agbno, &shape_changed);
 	if (error)
 		goto out_error;
 	if (shape_changed)
 		shape_changes++;
 
 	error = xfs_refcount_split_extent(cur, XFS_REFC_DOMAIN_SHARED,
-			agbno + aglen, &shape_changed);
+			*agbno + *aglen, &shape_changed);
 	if (error)
 		goto out_error;
 	if (shape_changed)
@@ -1252,7 +1248,7 @@ xfs_refcount_adjust(
 	 * Try to merge with the left or right extents of the range.
 	 */
 	error = xfs_refcount_merge_extents(cur, XFS_REFC_DOMAIN_SHARED,
-			new_agbno, new_aglen, adj, &shape_changed);
+			agbno, aglen, adj, &shape_changed);
 	if (error)
 		goto out_error;
 	if (shape_changed)
@@ -1261,7 +1257,7 @@ xfs_refcount_adjust(
 		cur->bc_ag.refc.shape_changes++;
 
 	/* Now that we've taken care of the ends, adjust the middle extents */
-	error = xfs_refcount_adjust_extents(cur, new_agbno, new_aglen, adj);
+	error = xfs_refcount_adjust_extents(cur, agbno, aglen, adj);
 	if (error)
 		goto out_error;
 
@@ -1297,21 +1293,20 @@ xfs_refcount_finish_one_cleanup(
 static inline int
 xfs_refcount_continue_op(
 	struct xfs_btree_cur		*cur,
-	xfs_fsblock_t			startblock,
-	xfs_agblock_t			new_agbno,
-	xfs_extlen_t			new_len,
-	xfs_fsblock_t			*new_fsbno)
+	struct xfs_refcount_intent	*ri,
+	xfs_agblock_t			new_agbno)
 {
 	struct xfs_mount		*mp = cur->bc_mp;
 	struct xfs_perag		*pag = cur->bc_ag.pag;
 
-	if (XFS_IS_CORRUPT(mp, !xfs_verify_agbext(pag, new_agbno, new_len)))
+	if (XFS_IS_CORRUPT(mp, !xfs_verify_agbext(pag, new_agbno,
+					ri->ri_blockcount)))
 		return -EFSCORRUPTED;
 
-	*new_fsbno = XFS_AGB_TO_FSB(mp, pag->pag_agno, new_agbno);
+	ri->ri_startblock = XFS_AGB_TO_FSB(mp, pag->pag_agno, new_agbno);
 
-	ASSERT(xfs_verify_fsbext(mp, *new_fsbno, new_len));
-	ASSERT(pag->pag_agno == XFS_FSB_TO_AGNO(mp, *new_fsbno));
+	ASSERT(xfs_verify_fsbext(mp, ri->ri_startblock, ri->ri_blockcount));
+	ASSERT(pag->pag_agno == XFS_FSB_TO_AGNO(mp, ri->ri_startblock));
 
 	return 0;
 }
@@ -1326,11 +1321,7 @@ xfs_refcount_continue_op(
 int
 xfs_refcount_finish_one(
 	struct xfs_trans		*tp,
-	enum xfs_refcount_intent_type	type,
-	xfs_fsblock_t			startblock,
-	xfs_extlen_t			blockcount,
-	xfs_fsblock_t			*new_fsb,
-	xfs_extlen_t			*new_len,
+	struct xfs_refcount_intent	*ri,
 	struct xfs_btree_cur		**pcur)
 {
 	struct xfs_mount		*mp = tp->t_mountp;
@@ -1338,17 +1329,16 @@ xfs_refcount_finish_one(
 	struct xfs_buf			*agbp = NULL;
 	int				error = 0;
 	xfs_agblock_t			bno;
-	xfs_agblock_t			new_agbno;
 	unsigned long			nr_ops = 0;
 	int				shape_changes = 0;
 	struct xfs_perag		*pag;
 
-	pag = xfs_perag_get(mp, XFS_FSB_TO_AGNO(mp, startblock));
-	bno = XFS_FSB_TO_AGBNO(mp, startblock);
+	pag = xfs_perag_get(mp, XFS_FSB_TO_AGNO(mp, ri->ri_startblock));
+	bno = XFS_FSB_TO_AGBNO(mp, ri->ri_startblock);
 
-	trace_xfs_refcount_deferred(mp, XFS_FSB_TO_AGNO(mp, startblock),
-			type, XFS_FSB_TO_AGBNO(mp, startblock),
-			blockcount);
+	trace_xfs_refcount_deferred(mp, XFS_FSB_TO_AGNO(mp, ri->ri_startblock),
+			ri->ri_type, XFS_FSB_TO_AGBNO(mp, ri->ri_startblock),
+			ri->ri_blockcount);
 
 	if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_REFCOUNT_FINISH_ONE)) {
 		error = -EIO;
@@ -1379,42 +1369,42 @@ xfs_refcount_finish_one(
 	}
 	*pcur = rcur;
 
-	switch (type) {
+	switch (ri->ri_type) {
 	case XFS_REFCOUNT_INCREASE:
-		error = xfs_refcount_adjust(rcur, bno, blockcount, &new_agbno,
-				new_len, XFS_REFCOUNT_ADJUST_INCREASE);
+		error = xfs_refcount_adjust(rcur, &bno, &ri->ri_blockcount,
+				XFS_REFCOUNT_ADJUST_INCREASE);
 		if (error)
 			goto out_drop;
-		if (*new_len > 0)
-			error = xfs_refcount_continue_op(rcur, startblock,
-					new_agbno, *new_len, new_fsb);
+		if (ri->ri_blockcount > 0)
+			error = xfs_refcount_continue_op(rcur, ri, bno);
 		break;
 	case XFS_REFCOUNT_DECREASE:
-		error = xfs_refcount_adjust(rcur, bno, blockcount, &new_agbno,
-				new_len, XFS_REFCOUNT_ADJUST_DECREASE);
+		error = xfs_refcount_adjust(rcur, &bno, &ri->ri_blockcount,
+				XFS_REFCOUNT_ADJUST_DECREASE);
 		if (error)
 			goto out_drop;
-		if (*new_len > 0)
-			error = xfs_refcount_continue_op(rcur, startblock,
-					new_agbno, *new_len, new_fsb);
+		if (ri->ri_blockcount > 0)
+			error = xfs_refcount_continue_op(rcur, ri, bno);
 		break;
 	case XFS_REFCOUNT_ALLOC_COW:
-		*new_fsb = startblock + blockcount;
-		*new_len = 0;
-		error = __xfs_refcount_cow_alloc(rcur, bno, blockcount);
+		error = __xfs_refcount_cow_alloc(rcur, bno, ri->ri_blockcount);
+		if (error)
+			goto out_drop;
+		ri->ri_blockcount = 0;
 		break;
 	case XFS_REFCOUNT_FREE_COW:
-		*new_fsb = startblock + blockcount;
-		*new_len = 0;
-		error = __xfs_refcount_cow_free(rcur, bno, blockcount);
+		error = __xfs_refcount_cow_free(rcur, bno, ri->ri_blockcount);
+		if (error)
+			goto out_drop;
+		ri->ri_blockcount = 0;
 		break;
 	default:
 		ASSERT(0);
 		error = -EFSCORRUPTED;
 	}
-	if (!error && *new_len > 0)
-		trace_xfs_refcount_finish_one_leftover(mp, pag->pag_agno, type,
-				bno, blockcount, new_agbno, *new_len);
+	if (!error && ri->ri_blockcount > 0)
+		trace_xfs_refcount_finish_one_leftover(mp, pag->pag_agno,
+				ri->ri_type, bno, ri->ri_blockcount);
 out_drop:
 	xfs_perag_put(pag);
 	return error;
diff --git a/libxfs/xfs_refcount.h b/libxfs/xfs_refcount.h
index 452f30556f..c633477ce3 100644
--- a/libxfs/xfs_refcount.h
+++ b/libxfs/xfs_refcount.h
@@ -75,9 +75,7 @@ void xfs_refcount_decrease_extent(struct xfs_trans *tp,
 extern void xfs_refcount_finish_one_cleanup(struct xfs_trans *tp,
 		struct xfs_btree_cur *rcur, int error);
 extern int xfs_refcount_finish_one(struct xfs_trans *tp,
-		enum xfs_refcount_intent_type type, xfs_fsblock_t startblock,
-		xfs_extlen_t blockcount, xfs_fsblock_t *new_fsb,
-		xfs_extlen_t *new_len, struct xfs_btree_cur **pcur);
+		struct xfs_refcount_intent *ri, struct xfs_btree_cur **pcur);
 
 extern int xfs_refcount_find_shared(struct xfs_btree_cur *cur,
 		xfs_agblock_t agbno, xfs_extlen_t aglen, xfs_agblock_t *fbno,