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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-21 12:11:44 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-21 12:11:44 -0800 |
commit | b5c78e04dd061b776978dad61dd85357081147b0 (patch) | |
tree | 2416b2dc61c452c3aeb2a32bcedf15e6257be638 /drivers/staging/zram/zram.txt | |
parent | 06991c28f37ad68e5c03777f5c3b679b56e3dac1 (diff) | |
parent | 951348b377385475aa256c27e1c9e2564c9ec160 (diff) | |
download | linux-b5c78e04dd061b776978dad61dd85357081147b0.tar.bz2 |
Merge tag 'staging-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree update from Greg Kroah-Hartman:
"Here's the big staging tree merge for 3.9-rc1
Lots of cleanups and updates for drivers all through the staging tree.
We are pretty much "code neutral" here, adding just about as many
lines as we removed.
All of these have been in linux-next for a while."
* tag 'staging-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (804 commits)
staging: comedi: vmk80xx: wait for URBs to complete
staging: comedi: drivers: addi-data: hwdrv_apci3200.c: Add a missing semicolon
staging: et131x: Update TODO list
staging: et131x: Remove assignment of skb->dev
staging: wlan-ng: hfa384x.h: fix for error reported by smatch
staging/zache checkpatch ERROR: spaces prohibited around that
staging/ozwpan: Mark read only parameters and structs as const
staging/ozwpan: Remove empty and unused function oz_cdev_heartbeat
staging/ozwpan: Mark local functions as static (fix sparse warnings)
staging/ozwpan: Add missing header includes
staging/usbip: Mark local functions as static (fix sparse warnings)
staging/xgifb: Remove duplicated code in loops.
staging/xgifb: Consolidate return paths
staging/xgifb: Remove code without effect
staging/xgifb: Remove unnecessary casts
staging/xgifb: Consolidate if/else if with identical code branches
staging: vt6656: replaced custom TRUE definition with true
staging: vt6656: replaced custom FALSE definition with false
staging: vt6656: replace custom BOOL definition with bool
staging/rtl8187se: Mark functions as static to silence sparse
...
Diffstat (limited to 'drivers/staging/zram/zram.txt')
-rw-r--r-- | drivers/staging/zram/zram.txt | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/staging/zram/zram.txt b/drivers/staging/zram/zram.txt index 5f75d2987564..765d790ae831 100644 --- a/drivers/staging/zram/zram.txt +++ b/drivers/staging/zram/zram.txt @@ -23,17 +23,17 @@ Following shows a typical sequence of steps for using zram. This creates 4 devices: /dev/zram{0,1,2,3} (num_devices parameter is optional. Default: 1) -2) Set Disksize (Optional): - Set disk size by writing the value to sysfs node 'disksize' - (in bytes). If disksize is not given, default value of 25% - of RAM is used. - - # Initialize /dev/zram0 with 50MB disksize - echo $((50*1024*1024)) > /sys/block/zram0/disksize - - NOTE: disksize cannot be changed if the disk contains any - data. So, for such a disk, you need to issue 'reset' (see below) - before you can change its disksize. +2) Set Disksize + Set disk size by writing the value to sysfs node 'disksize'. + The value can be either in bytes or you can use mem suffixes. + Examples: + # Initialize /dev/zram0 with 50MB disksize + echo $((50*1024*1024)) > /sys/block/zram0/disksize + + # Using mem suffixes + echo 256K > /sys/block/zram0/disksize + echo 512M > /sys/block/zram0/disksize + echo 1G > /sys/block/zram0/disksize 3) Activate: mkswap /dev/zram0 @@ -65,8 +65,9 @@ Following shows a typical sequence of steps for using zram. echo 1 > /sys/block/zram0/reset echo 1 > /sys/block/zram1/reset - (This frees all the memory allocated for the given device). - + This frees all the memory allocated for the given device and + resets the disksize to zero. You must set the disksize again + before reusing the device. Please report any problems at: - Mailing list: linux-mm-cc at laptop dot org |