xfs: remove unnecessary int returns from deferred rmap functions

Remove the return value from the functions that schedule deferred rmap
operations since they never fail and do not return status.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

fs/xfs/libxfs/xfs_bmap.c

@@ -1985,11 +1985,8 @@ xfs_bmap_add_extent_delay_real(
 	}
 
 	/* add reverse mapping unless caller opted out */
-	if (!(bma->flags & XFS_BMAPI_NORMAP)) {
-		error = xfs_rmap_map_extent(bma->tp, bma->ip, whichfork, new);
-		if (error)
-			goto done;
-	}
+	if (!(bma->flags & XFS_BMAPI_NORMAP))
+		xfs_rmap_map_extent(bma->tp, bma->ip, whichfork, new);
 
 	/* convert to a btree if necessary */
 	if (xfs_bmap_needs_btree(bma->ip, whichfork)) {
@@ -2471,9 +2468,7 @@ xfs_bmap_add_extent_unwritten_real(
 	}
 
 	/* update reverse mappings */
-	error = xfs_rmap_convert_extent(mp, tp, ip, whichfork, new);
-	if (error)
-		goto done;
+	xfs_rmap_convert_extent(mp, tp, ip, whichfork, new);
 
 	/* convert to a btree if necessary */
 	if (xfs_bmap_needs_btree(ip, whichfork)) {
@@ -2832,11 +2827,8 @@ xfs_bmap_add_extent_hole_real(
 	}
 
 	/* add reverse mapping unless caller opted out */
-	if (!(flags & XFS_BMAPI_NORMAP)) {
-		error = xfs_rmap_map_extent(tp, ip, whichfork, new);
-		if (error)
-			goto done;
-	}
+	if (!(flags & XFS_BMAPI_NORMAP))
+		xfs_rmap_map_extent(tp, ip, whichfork, new);
 
 	/* convert to a btree if necessary */
 	if (xfs_bmap_needs_btree(ip, whichfork)) {
@@ -5149,9 +5141,7 @@ xfs_bmap_del_extent_real(
 	}
 
 	/* remove reverse mapping */
-	error = xfs_rmap_unmap_extent(tp, ip, whichfork, del);
-	if (error)
-		goto done;
+	xfs_rmap_unmap_extent(tp, ip, whichfork, del);
 
 	/*
 	 * If we need to, add to list of extents to delete.
@@ -5651,12 +5641,11 @@ xfs_bmse_merge(
 			&new);
 
 	/* update reverse mapping. rmap functions merge the rmaps for us */
-	error = xfs_rmap_unmap_extent(tp, ip, whichfork, got);
-	if (error)
-		return error;
+	xfs_rmap_unmap_extent(tp, ip, whichfork, got);
 	memcpy(&new, got, sizeof(new));
 	new.br_startoff = left->br_startoff + left->br_blockcount;
-	return xfs_rmap_map_extent(tp, ip, whichfork, &new);
+	xfs_rmap_map_extent(tp, ip, whichfork, &new);
+	return 0;
 }
 
 static int
@@ -5695,10 +5684,9 @@ xfs_bmap_shift_update_extent(
 			got);
 
 	/* update reverse mapping */
-	error = xfs_rmap_unmap_extent(tp, ip, whichfork, &prev);
-	if (error)
-		return error;
-	return xfs_rmap_map_extent(tp, ip, whichfork, got);
+	xfs_rmap_unmap_extent(tp, ip, whichfork, &prev);
+	xfs_rmap_map_extent(tp, ip, whichfork, got);
+	return 0;
 }
 
 int

fs/xfs/libxfs/xfs_refcount.c

@@ -1558,8 +1558,9 @@ xfs_refcount_alloc_cow_extent(
 		return error;
 
 	/* Add rmap entry */
-	return xfs_rmap_alloc_extent(tp, XFS_FSB_TO_AGNO(mp, fsb),
+	xfs_rmap_alloc_extent(tp, XFS_FSB_TO_AGNO(mp, fsb),
 			XFS_FSB_TO_AGBNO(mp, fsb), len, XFS_RMAP_OWN_COW);
+	return 0;
 }
 
 /* Forget a CoW staging event in the refcount btree. */
@@ -1570,17 +1571,13 @@ xfs_refcount_free_cow_extent(
 	xfs_extlen_t			len)
 {
 	struct xfs_mount		*mp = tp->t_mountp;
-	int				error;
 
 	if (!xfs_sb_version_hasreflink(&mp->m_sb))
 		return 0;
 
 	/* Remove rmap entry */
-	error = xfs_rmap_free_extent(tp, XFS_FSB_TO_AGNO(mp, fsb),
+	xfs_rmap_free_extent(tp, XFS_FSB_TO_AGNO(mp, fsb),
 			XFS_FSB_TO_AGBNO(mp, fsb), len, XFS_RMAP_OWN_COW);
-	if (error)
-		return error;
-
 	return __xfs_refcount_add(tp, XFS_REFCOUNT_FREE_COW, fsb, len);
 }
 

fs/xfs/libxfs/xfs_rmap.c

@@ -2268,7 +2268,7 @@ xfs_rmap_update_is_needed(
  * Record a rmap intent; the list is kept sorted first by AG and then by
  * increasing age.
  */
-static int
+static void
 __xfs_rmap_add(
 	struct xfs_trans		*tp,
 	enum xfs_rmap_intent_type	type,
@@ -2295,11 +2295,10 @@ __xfs_rmap_add(
 	ri->ri_bmap = *bmap;
 
 	xfs_defer_add(tp, XFS_DEFER_OPS_TYPE_RMAP, &ri->ri_list);
-	return 0;
 }
 
 /* Map an extent into a file. */
-int
+void
 xfs_rmap_map_extent(
 	struct xfs_trans	*tp,
 	struct xfs_inode	*ip,
@@ -2307,15 +2306,15 @@ xfs_rmap_map_extent(
 	struct xfs_bmbt_irec	*PREV)
 {
 	if (!xfs_rmap_update_is_needed(tp->t_mountp, whichfork))
-		return 0;
+		return;
 
-	return __xfs_rmap_add(tp, xfs_is_reflink_inode(ip) ?
+	__xfs_rmap_add(tp, xfs_is_reflink_inode(ip) ?
 			XFS_RMAP_MAP_SHARED : XFS_RMAP_MAP, ip->i_ino,
 			whichfork, PREV);
 }
 
 /* Unmap an extent out of a file. */
-int
+void
 xfs_rmap_unmap_extent(
 	struct xfs_trans	*tp,
 	struct xfs_inode	*ip,
@@ -2323,9 +2322,9 @@ xfs_rmap_unmap_extent(
 	struct xfs_bmbt_irec	*PREV)
 {
 	if (!xfs_rmap_update_is_needed(tp->t_mountp, whichfork))
-		return 0;
+		return;
 
-	return __xfs_rmap_add(tp, xfs_is_reflink_inode(ip) ?
+	__xfs_rmap_add(tp, xfs_is_reflink_inode(ip) ?
 			XFS_RMAP_UNMAP_SHARED : XFS_RMAP_UNMAP, ip->i_ino,
 			whichfork, PREV);
 }
@@ -2336,7 +2335,7 @@ xfs_rmap_unmap_extent(
  * Note that tp can be NULL here as no transaction is used for COW fork
  * unwritten conversion.
  */
-int
+void
 xfs_rmap_convert_extent(
 	struct xfs_mount	*mp,
 	struct xfs_trans	*tp,
@@ -2345,15 +2344,15 @@ xfs_rmap_convert_extent(
 	struct xfs_bmbt_irec	*PREV)
 {
 	if (!xfs_rmap_update_is_needed(mp, whichfork))
-		return 0;
+		return;
 
-	return __xfs_rmap_add(tp, xfs_is_reflink_inode(ip) ?
+	__xfs_rmap_add(tp, xfs_is_reflink_inode(ip) ?
 			XFS_RMAP_CONVERT_SHARED : XFS_RMAP_CONVERT, ip->i_ino,
 			whichfork, PREV);
 }
 
 /* Schedule the creation of an rmap for non-file data. */
-int
+void
 xfs_rmap_alloc_extent(
 	struct xfs_trans	*tp,
 	xfs_agnumber_t		agno,
@@ -2364,18 +2363,18 @@ xfs_rmap_alloc_extent(
 	struct xfs_bmbt_irec	bmap;
 
 	if (!xfs_rmap_update_is_needed(tp->t_mountp, XFS_DATA_FORK))
-		return 0;
+		return;
 
 	bmap.br_startblock = XFS_AGB_TO_FSB(tp->t_mountp, agno, bno);
 	bmap.br_blockcount = len;
 	bmap.br_startoff = 0;
 	bmap.br_state = XFS_EXT_NORM;
 
-	return __xfs_rmap_add(tp, XFS_RMAP_ALLOC, owner, XFS_DATA_FORK, &bmap);
+	__xfs_rmap_add(tp, XFS_RMAP_ALLOC, owner, XFS_DATA_FORK, &bmap);
 }
 
 /* Schedule the deletion of an rmap for non-file data. */
-int
+void
 xfs_rmap_free_extent(
 	struct xfs_trans	*tp,
 	xfs_agnumber_t		agno,
@@ -2386,14 +2385,14 @@ xfs_rmap_free_extent(
 	struct xfs_bmbt_irec	bmap;
 
 	if (!xfs_rmap_update_is_needed(tp->t_mountp, XFS_DATA_FORK))
-		return 0;
+		return;
 
 	bmap.br_startblock = XFS_AGB_TO_FSB(tp->t_mountp, agno, bno);
 	bmap.br_blockcount = len;
 	bmap.br_startoff = 0;
 	bmap.br_state = XFS_EXT_NORM;
 
-	return __xfs_rmap_add(tp, XFS_RMAP_FREE, owner, XFS_DATA_FORK, &bmap);
+	__xfs_rmap_add(tp, XFS_RMAP_FREE, owner, XFS_DATA_FORK, &bmap);
 }
 
 /* Compare rmap records.  Returns -1 if a < b, 1 if a > b, and 0 if equal. */

fs/xfs/libxfs/xfs_rmap.h

@@ -161,16 +161,16 @@ struct xfs_rmap_intent {
 };
 
 /* functions for updating the rmapbt based on bmbt map/unmap operations */
-int xfs_rmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
+void xfs_rmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
 		int whichfork, struct xfs_bmbt_irec *imap);
-int xfs_rmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip,
+void xfs_rmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip,
 		int whichfork, struct xfs_bmbt_irec *imap);
-int xfs_rmap_convert_extent(struct xfs_mount *mp, struct xfs_trans *tp,
+void xfs_rmap_convert_extent(struct xfs_mount *mp, struct xfs_trans *tp,
 		struct xfs_inode *ip, int whichfork,
 		struct xfs_bmbt_irec *imap);
-int xfs_rmap_alloc_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
+void xfs_rmap_alloc_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
 		xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner);
-int xfs_rmap_free_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
+void xfs_rmap_free_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
 		xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner);
 
 void xfs_rmap_finish_one_cleanup(struct xfs_trans *tp,