diff options
Diffstat (limited to 'drivers/block/zram/Kconfig')
| -rw-r--r-- | drivers/block/zram/Kconfig | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig index 0386b7da02aa..7b29cce60ab2 100644 --- a/drivers/block/zram/Kconfig +++ b/drivers/block/zram/Kconfig @@ -59,8 +59,8 @@ config ZRAM_WRITEBACK bool "Write back incompressible or idle page to backing device" depends on ZRAM help - With incompressible page, there is no memory saving to keep it - in memory. Instead, write it out to backing device. + This lets zram entries (incompressible or idle pages) be written + back to a backing device, helping save memory. For this feature, admin should set up backing device via /sys/block/zramX/backing_dev. @@ -69,9 +69,18 @@ config ZRAM_WRITEBACK See Documentation/admin-guide/blockdev/zram.rst for more information. +config ZRAM_TRACK_ENTRY_ACTIME + bool "Track access time of zram entries" + depends on ZRAM + help + With this feature zram tracks access time of every stored + entry (page), which can be used for a more fine grained IDLE + pages writeback. + config ZRAM_MEMORY_TRACKING bool "Track zRam block status" depends on ZRAM && DEBUG_FS + select ZRAM_TRACK_ENTRY_ACTIME help With this feature, admin can track the state of allocated blocks of zRAM. Admin could see the information via @@ -86,4 +95,4 @@ config ZRAM_MULTI_COMP This will enable multi-compression streams, so that ZRAM can re-compress pages using a potentially slower but more effective compression algorithm. Note, that IDLE page recompression - requires ZRAM_MEMORY_TRACKING. + requires ZRAM_TRACK_ENTRY_ACTIME. |