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mm/vmalloc: initialize VA's list node after unlink
A vmap_area can travel between different places. For example attached/detached to/from different rb-trees. In order to prevent fancy bugs, initialize a VA's list node after it is removed from the list, so it pairs with VA's rb_node which is also initialized. There is no functional change as a result of this patch. Link: https://lkml.kernel.org/r/20220607093449.3100-4-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Baoquan He <bhe@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -977,7 +977,7 @@ __unlink_va(struct vmap_area *va, struct rb_root *root, bool augment)
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else
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rb_erase(&va->rb_node, root);
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list_del(&va->list);
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list_del_init(&va->list);
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RB_CLEAR_NODE(&va->rb_node);
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}
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