+ mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix.patch added to mm-unstable branch

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The patch titled
     Subject: mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix
has been added to the -mm mm-unstable branch.  Its filename is
     mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix.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: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix
Date: Wed Feb 21 12:35:32 PM PST 2024

avoid using goto

Cc: Barry Song <21cnbao@xxxxxxxxx>
Cc: Barry Song <v-songbaohua@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/swapfile.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/mm/swapfile.c~mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix
+++ a/mm/swapfile.c
@@ -3335,10 +3335,8 @@ static int __swap_duplicate(swp_entry_t
 	} else
 		err = -ENOENT;			/* unused swap entry */
 
-	if (err)
-		goto unlock_out;
-
-	WRITE_ONCE(p->swap_map[offset], count | has_cache);
+	if (!err)
+		WRITE_ONCE(p->swap_map[offset], count | has_cache);
 
 unlock_out:
 	unlock_cluster_or_swap_info(p, ci);
_

Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are

mm-memory_hotplug-export-mhp_supports_memmap_on_memory-fix.patch
kexec-split-crashkernel-reservation-code-out-from-crash_corec-fix.patch
arch-crash-move-arch_crash_save_vmcoreinfo-out-to-file-vmcore_infoc-fix.patch
mm-damon-dbgfs-make-debugfs-interface-deprecation-message-a-macro-fix.patch
mm-ptdump-have-ptdump_check_wx-return-bool-fix.patch
test_xarray-add-tests-for-advanced-multi-index-use-fix-fix.patch
test_xarray-add-tests-for-advanced-multi-index-use-fix-fix-fix.patch
mm-swapfile-__swap_duplicate-drop-redundant-write_once-on-swap_map-for-err-cases-fix.patch
kprobes-use-synchronize_rcu_tasks_rude-in-kprobe_optimizer-fix.patch
panic-add-option-to-dump-blocked-tasks-in-panic_print-fix.patch





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