https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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- v2.6.19-rc6
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Tip revision: 94710cac0ef4ee177a63b5227664b38c95bbf703 authored by Linus Torvalds on 12 August 2018, 20:41:04 UTC
Linux 4.18
Linux 4.18
Tip revision: 94710ca
Kconfig
# SPDX-License-Identifier: GPL-2.0
config ZRAM
tristate "Compressed RAM block device support"
depends on BLOCK && SYSFS && ZSMALLOC && CRYPTO
select CRYPTO_LZO
default n
help
Creates virtual block devices called /dev/zramX (X = 0, 1, ...).
Pages written to these disks are compressed and stored in memory
itself. These disks allow very fast I/O and compression provides
good amounts of memory savings.
It has several use cases, for example: /tmp storage, use as swap
disks and maybe many more.
See Documentation/blockdev/zram.txt for more information.
config ZRAM_WRITEBACK
bool "Write back incompressible page to backing device"
depends on ZRAM
default n
help
With incompressible page, there is no memory saving to keep it
in memory. Instead, write it out to backing device.
For this feature, admin should set up backing device via
/sys/block/zramX/backing_dev.
See Documentation/blockdev/zram.txt for more information.
config ZRAM_MEMORY_TRACKING
bool "Track zRam block status"
depends on ZRAM && DEBUG_FS
help
With this feature, admin can track the state of allocated blocks
of zRAM. Admin could see the information via
/sys/kernel/debug/zram/zramX/block_state.
See Documentation/blockdev/zram.txt for more information.