xfs: simplify xfs_ag_resv_free signature

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@kernel.org>

8 files changed, 16 insertions, 50 deletions

diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c
index 55717b11cbda..972131732cce 100644
--- a/fs/xfs/libxfs/xfs_ag.c
+++ b/fs/xfs/libxfs/xfs_ag.c
@@ -881,9 +881,7 @@ 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(&args);
diff --git a/fs/xfs/libxfs/xfs_ag_resv.c b/fs/xfs/libxfs/xfs_ag_resv.c
index 2e6128a25635..8723cd0d3f58 100644
--- a/fs/xfs/libxfs/xfs_ag_resv.c
+++ b/fs/xfs/libxfs/xfs_ag_resv.c
@@ -126,14 +126,13 @@ 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);
 
@@ -149,30 +148,19 @@ __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/fs/xfs/libxfs/xfs_ag_resv.h b/fs/xfs/libxfs/xfs_ag_resv.h
index b74b210008ea..ff20ed93de77 100644
--- a/fs/xfs/libxfs/xfs_ag_resv.h
+++ b/fs/xfs/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);
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index aada7655b778..4e9ccc27a03e 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -937,9 +937,7 @@ xrep_reset_perag_resv(
 	ASSERT(sc->tp);
 
 	sc->flags &= ~XREP_RESET_PERAG_RESV;
-	error = xfs_ag_resv_free(sc->sa.pag);
-	if (error)
-		goto out;
+	xfs_ag_resv_free(sc->sa.pag);
 	error = xfs_ag_resv_init(sc->sa.pag, sc->tp);
 	if (error == -ENOSPC) {
 		xfs_err(sc->mp,
@@ -948,7 +946,6 @@ xrep_reset_perag_resv(
 		error = 0;
 	}
 
-out:
 	return error;
 }
 
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 2da86f05e0e5..8186f142864a 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -201,11 +201,10 @@ xfs_growfs_data_private(
 			struct xfs_perag	*pag;
 
 			pag = xfs_perag_get(mp, id.agno);
-			error = xfs_ag_resv_free(pag);
+			xfs_ag_resv_free(pag);
 			xfs_perag_put(pag);
-			if (error)
-				return error;
 		}
+
 		/*
 		 * Reserve AG metadata blocks. ENOSPC here does not mean there
 		 * was a growfs failure, just that there still isn't space for
@@ -585,24 +584,13 @@ xfs_fs_reserve_ag_blocks(
 /*
  * Free space reserved for per-AG metadata.
  */
-int
+void
 xfs_fs_unreserve_ag_blocks(
 	struct xfs_mount	*mp)
 {
-	xfs_agnumber_t		agno;
 	struct xfs_perag	*pag;
-	int			error = 0;
-	int			err2;
-
-	for_each_perag(mp, agno, pag) {
-		err2 = xfs_ag_resv_free(pag);
-		if (err2 && !error)
-			error = err2;
-	}
-
-	if (error)
-		xfs_warn(mp,
-	"Error %d freeing per-AG metadata reserve pool.", error);
+	xfs_agnumber_t		agno;
 
-	return error;
+	for_each_perag(mp, agno, pag)
+		xfs_ag_resv_free(pag);
 }
diff --git a/fs/xfs/xfs_fsops.h b/fs/xfs/xfs_fsops.h
index 2cffe51a31e8..dba17c404e7d 100644
--- a/fs/xfs/xfs_fsops.h
+++ b/fs/xfs/xfs_fsops.h
@@ -14,6 +14,6 @@ extern int xfs_reserve_blocks(xfs_mount_t *mp, uint64_t *inval,
 extern int xfs_fs_goingdown(xfs_mount_t *mp, uint32_t inflags);
 
 extern int xfs_fs_reserve_ag_blocks(struct xfs_mount *mp);
-extern int xfs_fs_unreserve_ag_blocks(struct xfs_mount *mp);
+extern void xfs_fs_unreserve_ag_blocks(struct xfs_mount *mp);
 
 #endif	/* __XFS_FSOPS_H__ */
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 158a4cac6645..0b71bb79282d 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1823,11 +1823,7 @@ xfs_remount_ro(
 	xfs_inodegc_stop(mp);
 
 	/* Free the per-AG metadata reservation pool. */
-	error = xfs_fs_unreserve_ag_blocks(mp);
-	if (error) {
-		xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
-		return error;
-	}
+	xfs_fs_unreserve_ag_blocks(mp);
 
 	/*
 	 * Before we sync the metadata, we need to free up the reserve block
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 8b6d56b57d54..e6a7b6325f05 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -3122,7 +3122,6 @@ DEFINE_AG_RESV_EVENT(xfs_ag_resv_free_extent);
 DEFINE_AG_RESV_EVENT(xfs_ag_resv_critical);
 DEFINE_AG_RESV_EVENT(xfs_ag_resv_needed);
 
-DEFINE_AG_ERROR_EVENT(xfs_ag_resv_free_error);
 DEFINE_AG_ERROR_EVENT(xfs_ag_resv_init_error);
 
 /* refcount tracepoint classes */