Lines Matching refs:swap

3 Zswap is a lightweight compressed cache for swap pages. It takes pages that are
6 for potentially reduced swap I/O.  This trade-off can also result in a
8 faster than reads from a swap device.
19     dramatically reduce their swap I/O pressure, avoiding heavy handed I/O
22 * Users with SSDs as swap devices can extend the life of the device by
25 Zswap evicts pages from compressed cache on an LRU basis to the backing swap
42 pages out of the compressed pool, a swapoff on the swap device(s) will
50 the backing swap device in the case that the compressed pool is full.
70 When a swap page is passed from frontswap to zswap, zswap maintains a mapping
71 of the swap entry, a combination of the swap type and swap offset, to the zpool
72 handle that references that compressed swap page.  This mapping is achieved
73 with a red-black tree per swap type.  The swap offset is the search key for the
76 During a page fault on a PTE that is a swap entry, frontswap calls the zswap
80 Once there are no PTEs referencing a swap page stored in zswap (i.e. the count
81 in the swap_map goes to 0) the swap code calls the zswap invalidate function,