From 25c1991f9f7707b91f974c0843307a191d964d1a Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <djwong@kernel.org>
Date: Sat, 15 Jul 2023 09:31:12 +0300
Subject: xfs: check that per-cpu inodegc workers actually run on that cpu

commit b37c4c8339cd394ea6b8b415026603320a185651 upstream.

Now that we've allegedly worked out the problem of the per-cpu inodegc
workers being scheduled on the wrong cpu, let's put in a debugging knob
to let us know if a worker ever gets mis-scheduled again.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/xfs/xfs_icache.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'fs/xfs/xfs_icache.c')

diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 536885f8b8a8..7ce262dcabca 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1848,6 +1848,8 @@ xfs_inodegc_worker(
 	struct llist_node	*node = llist_del_all(&gc->list);
 	struct xfs_inode	*ip, *n;
 
+	ASSERT(gc->cpu == smp_processor_id());
+
 	WRITE_ONCE(gc->items, 0);
 
 	if (!node)
-- 
cgit 1.4.1