| .. SPDX-License-Identifier: GPL-2.0 | |
| ========== | |
| Page Cache | |
| ========== | |
| The page cache is the primary way that the user and the rest of the kernel | |
| interact with filesystems. It can be bypassed (e.g. with O_DIRECT), | |
| but normal reads, writes and mmaps go through the page cache. | |
| Folios | |
| ====== | |
| The folio is the unit of memory management within the page cache. | |
| Operations |