linux-6.15/mm/khugepaged.c

82  * default collapse hugepages if there is at least one pte mapped like
86  * Note that these are only respected if collapse was initiated by khugepaged.
247  * max_ptes_none controls if khugepaged should collapse hugepages over
680 		 * If collapse was initiated by khugepaged, check that there is  in __collapse_huge_page_isolate()
994  * Bring missing pages in from swap, to complete THP collapse.
1149 		 * that case.  Continuing to collapse causes inconsistency.  in collapse_huge_page()
1334 			 * Don't collapse the page if any of the small  in hpage_collapse_scan_pmd()
1400 		 * But such case is ephemeral we could always retry collapse  in hpage_collapse_scan_pmd()
1411 		 * If collapse was initiated by khugepaged, check that there is  in hpage_collapse_scan_pmd()
1490  * collapse_pte_mapped_thp - Try to collapse a pte-mapped THP for mm at
1493  * @mm: process address space where collapse happens
1494  * @addr: THP collapse address
1812  * collapse_file - collapse filemap/tmpfs/shmem pages into huge one.
1814  * @mm: process address space where collapse happens
1815  * @addr: virtual collapse start address
1816  * @file: file that collapse on
1817  * @start: collapse start address
1818  * @cc: collapse context and scratchpad
2032 		 * unlock folio after collapse/during rollback.  in collapse_file()
2073 	 * If collapse is successful, flush must be done now before copying.  in collapse_file()
2074 	 * If collapse is unsuccessful, does flush actually need to be done?  in collapse_file()
2215 	 * The collapse has succeeded, so free the old folios.  in collapse_file()
2731 	 * specified memory range. khugepaged likely won't be able to collapse  in madvise_collapse_errno()