+ mm-vmscan-print-err-before-panic.patch added to mm-unstable branch

+ mm-vmscan-print-err-before-panic.patch added to mm-unstable branch

[Andrew Morton]

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The patch titled
     Subject: mm/vmscan: print err before panic
has been added to the -mm mm-unstable branch.  Its filename is
     mm-vmscan-print-err-before-panic.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmscan-print-err-before-panic.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Angus Chen <angus.chen@jaguarmicro.com>
Subject: mm/vmscan: print err before panic
Date: Wed, 6 Sep 2023 16:37:00 +0800

If panic is enable,the err information will not be printed before bugon,
So swap it.  Print the return value of PTR_ERR(pgdat->kswapd) also.

Link: https://lkml.kernel.org/r/20230906083700.181-1-angus.chen@jaguarmicro.com
Signed-off-by: Angus Chen <angus.chen@jaguarmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmscan.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/mm/vmscan.c~mm-vmscan-print-err-before-panic
+++ a/mm/vmscan.c
@@ -7917,8 +7917,9 @@ void __meminit kswapd_run(int nid)
 		pgdat->kswapd = kthread_run(kswapd, pgdat, "kswapd%d", nid);
 		if (IS_ERR(pgdat->kswapd)) {
 			/* failure at boot is fatal */
+			pr_err("Failed to start kswapd on node %d，ret=%ld\n",
+				   nid, PTR_ERR(pgdat->kswapd));
 			BUG_ON(system_state < SYSTEM_RUNNING);
-			pr_err("Failed to start kswapd on node %d\n", nid);
 			pgdat->kswapd = NULL;
 		}
 	}
_

Patches currently in -mm which might be from angus.chen@jaguarmicro.com are

mm-vmscan-print-err-before-panic.patch