Lines Matching refs:compressed

3 Zswap is a lightweight compressed cache for swap pages. It takes pages that are
7 significant performance improvement if reads from the compressed cache are
25 Zswap evicts pages from compressed cache on an LRU basis to the backing swap
26 device when the compressed pool reaches its size limit.  This requirement had
39 back into memory all of the pages stored in the compressed pool.  The
40 pages stored in zswap will remain in the compressed pool until they are
42 pages out of the compressed pool, a swapoff on the swap device(s) will
44 compressed pool.
49 evict pages from its own compressed pool on an LRU basis and write them back to
50 the backing swap device in the case that the compressed pool is full.
52 Zswap makes use of zpool for the managing the compressed memory pool.  Each
55 accessed.  The compressed memory pool grows on demand and shrinks as compressed
63 The zbud type zpool allocates exactly 1 page to store 2 compressed pages, which
65 zbud pages).  The zsmalloc type zpool has a more complex compressed page
67 zsmalloc does not implement compressed page eviction, so once zswap fills it
72 handle that references that compressed swap page.  This mapping is achieved
82 via frontswap, to free the compressed entry.
86 * max_pool_percent - The maximum percentage of memory that the compressed
96 compressed pages are not modified; they are left in their own zpool.  When a