kernel: mm/swap: fix race when skipping swapcache

In the Linux kernel, the following vulnerability has been resolved: mm/swap: fix race when skipping swapcache The Linux kernel CVE team has assigned CVE-2024-26759 to this issue. Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024040304-CVE-2024-26759-45f1@gregkh/T...