[PATCH 1/2] xfs: simplify xfs_ag_resv_free signature

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

It's not possible to fail at increasing fdblocks, so get rid of all the
error returns here.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 include/xfs_trace.h  |    1 -
 libxfs/xfs_ag.c      |    4 +---
 libxfs/xfs_ag_resv.c |   22 +++++-----------------
 libxfs/xfs_ag_resv.h |    2 +-
 4 files changed, 7 insertions(+), 22 deletions(-)


diff --git a/include/xfs_trace.h b/include/xfs_trace.h
index b3240213364..08ec51fc799 100644
--- a/include/xfs_trace.h
+++ b/include/xfs_trace.h
@@ -269,7 +269,6 @@
 #define trace_xfs_ag_resv_critical(...)		((void) 0)
 #define trace_xfs_ag_resv_needed(...)		((void) 0)
 #define trace_xfs_ag_resv_free(...)		((void) 0)
-#define trace_xfs_ag_resv_free_error(...)	((void) 0)
 #define trace_xfs_ag_resv_init(...)		((void) 0)
 #define trace_xfs_ag_resv_init_error(...)	((void) 0)
 #define trace_xfs_ag_resv_alloc_extent(...)	((void) 0)
diff --git a/libxfs/xfs_ag.c b/libxfs/xfs_ag.c
index ddd5584f23e..f22d58ad040 100644
--- a/libxfs/xfs_ag.c
+++ b/libxfs/xfs_ag.c
@@ -942,9 +942,7 @@ xfs_ag_shrink_space(
 	 * Disable perag reservations so it doesn't cause the allocation request
 	 * to fail. We'll reestablish reservation before we return.
 	 */
-	error = xfs_ag_resv_free(pag);
-	if (error)
-		return error;
+	xfs_ag_resv_free(pag);
 
 	/* internal log shouldn't also show up in the free space btrees */
 	error = xfs_alloc_vextent_exact_bno(&args,
diff --git a/libxfs/xfs_ag_resv.c b/libxfs/xfs_ag_resv.c
index 3a80b1613e1..542740bb850 100644
--- a/libxfs/xfs_ag_resv.c
+++ b/libxfs/xfs_ag_resv.c
@@ -125,14 +125,13 @@ xfs_ag_resv_needed(
 }
 
 /* Clean out a reservation */
-static int
+static void
 __xfs_ag_resv_free(
 	struct xfs_perag		*pag,
 	enum xfs_ag_resv_type		type)
 {
 	struct xfs_ag_resv		*resv;
 	xfs_extlen_t			oldresv;
-	int				error;
 
 	trace_xfs_ag_resv_free(pag, type, 0);
 
@@ -148,30 +147,19 @@ __xfs_ag_resv_free(
 		oldresv = resv->ar_orig_reserved;
 	else
 		oldresv = resv->ar_reserved;
-	error = xfs_mod_fdblocks(pag->pag_mount, oldresv, true);
+	xfs_mod_fdblocks(pag->pag_mount, oldresv, true);
 	resv->ar_reserved = 0;
 	resv->ar_asked = 0;
 	resv->ar_orig_reserved = 0;
-
-	if (error)
-		trace_xfs_ag_resv_free_error(pag->pag_mount, pag->pag_agno,
-				error, _RET_IP_);
-	return error;
 }
 
 /* Free a per-AG reservation. */
-int
+void
 xfs_ag_resv_free(
 	struct xfs_perag		*pag)
 {
-	int				error;
-	int				err2;
-
-	error = __xfs_ag_resv_free(pag, XFS_AG_RESV_RMAPBT);
-	err2 = __xfs_ag_resv_free(pag, XFS_AG_RESV_METADATA);
-	if (err2 && !error)
-		error = err2;
-	return error;
+	__xfs_ag_resv_free(pag, XFS_AG_RESV_RMAPBT);
+	__xfs_ag_resv_free(pag, XFS_AG_RESV_METADATA);
 }
 
 static int
diff --git a/libxfs/xfs_ag_resv.h b/libxfs/xfs_ag_resv.h
index b74b210008e..ff20ed93de7 100644
--- a/libxfs/xfs_ag_resv.h
+++ b/libxfs/xfs_ag_resv.h
@@ -6,7 +6,7 @@
 #ifndef __XFS_AG_RESV_H__
 #define	__XFS_AG_RESV_H__
 
-int xfs_ag_resv_free(struct xfs_perag *pag);
+void xfs_ag_resv_free(struct xfs_perag *pag);
 int xfs_ag_resv_init(struct xfs_perag *pag, struct xfs_trans *tp);
 
 bool xfs_ag_resv_critical(struct xfs_perag *pag, enum xfs_ag_resv_type type);