On 7/1/23 16:54, Matthew Wilcox wrote: > On Sat, Jul 01, 2023 at 08:21:20AM -0700, Randy Dunlap wrote: >>> -* kmap_local_page(). This function is used to require short term mappings. >>> - It can be invoked from any context (including interrupts) but the mappings >>> - can only be used in the context which acquired them. >>> - >>> - This function should always be used, whereas kmap_atomic() and kmap() have >>> +* kmap_local_page(), kmap_local_folio() - These functions are used to require >> >> acquire ? > > "create" might be better? Yes, that's good. >>> + short term mappings. They can be invoked from any context (including >>> + interrupts) but the mappings can only be used in the context which acquired >>> + them. The only differences between them consist in the first taking a pointer >>> + to a struct page and the second taking a pointer to struct folio and the byte >>> + offset within the folio which identifies the page. >> >> -- >> ~Randy -- ~Randy
