reclaim empty user page table pages

modulename: pt_reclaim.ko

configname: CONFIG_PT_RECLAIM

Linux Kernel Configuration
└─>Memory Management options
└─>reclaim empty user page table pages
In linux kernel since version 6.6.78 (release Date: 2025-02-17)  
Try to reclaim empty user page table pages in paths other than munmap
and exit_mmap path.

Note: now only empty user PTE page table pages will be reclaimed.

source code:
mm/pt_reclaim.c