diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 7672a22647b4..12f32f8d26bf 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -46,6 +46,22 @@ config ZSWAP_DEFAULT_ON The selection made here can be overridden by using the kernel command line 'zswap.enabled=' option. +config ZSWAP_EXCLUSIVE_LOADS_DEFAULT_ON + bool "Invalidate zswap entries when pages are loaded" + depends on ZSWAP + help + If selected, exclusive loads for zswap will be enabled at boot, + otherwise it will be disabled. + + If exclusive loads are enabled, when a page is loaded from zswap, + the zswap entry is invalidated at once, as opposed to leaving it + in zswap until the swap entry is freed. + + This avoids having two copies of the same page in memory + (compressed and uncompressed) after faulting in a page from zswap. + The cost is that if the page was never dirtied and needs to be + swapped out again, it will be re-compressed. + choice prompt "Default compressor" depends on ZSWAP |