1 .. SPDX-License-Identifier: GPL-2.0 2 3 ========== 4 Page Cache 5 ========== 6 7 The page cache is the primary way that the user and the rest of the kernel 8 interact with filesystems. It can be bypassed (e.g. with O_DIRECT), 9 but normal reads, writes and mmaps go through the page cache. 10 11 Folios 12 ====== 13 14 The folio is the unit of memory management within the page cache. 15 Operations
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