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Date: Tue, 1 Jun 2010 13:31:26 +0530
From: Nitin Gupta <ngupta@...are.org>
To: Greg KH <greg@...ah.com>
Cc: Pekka Enberg <penberg@...helsinki.fi>,
Andrew Morton <akpm@...ux-foundation.org>,
Minchan Kim <minchan.kim@...il.com>, Ed Tomlinson <edt@....ca>,
Hugh Dickins <hugh.dickins@...cali.co.uk>,
Cyp <cyp561@...il.com>, driverdev <devel@...verdev.osuosl.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/4] Rename ramzswap to zram in documentation
Related changes:
- Included example to show usage as generic
(non-swap) disk with ext4 filesystem.
- Renamed rzscontrol to zramconfig to match
with new device naming.
Signed-off-by: Nitin Gupta <ngupta@...are.org>
---
drivers/staging/zram/zram.txt | 113 ++++++++++++++++++++++------------------
1 files changed, 62 insertions(+), 51 deletions(-)
rewrite drivers/staging/zram/zram.txt (73%)
diff --git a/drivers/staging/zram/zram.txt b/drivers/staging/zram/zram.txt
dissimilarity index 73%
index 9694acf..520edc1 100644
--- a/drivers/staging/zram/zram.txt
+++ b/drivers/staging/zram/zram.txt
@@ -1,51 +1,62 @@
-ramzswap: Compressed RAM based swap device
--------------------------------------------
-
-Project home: http://compcache.googlecode.com/
-
-* Introduction
-
-The ramzswap module creates RAM based block devices which can (only) be used as
-swap disks. Pages swapped to these devices are compressed and stored in memory
-itself. See project home for use cases, performance numbers and a lot more.
-
-Individual ramzswap devices are configured and initialized using rzscontrol
-userspace utility as shown in examples below. See rzscontrol man page for more
-details.
-
-* Usage
-
-Following shows a typical sequence of steps for using ramzswap.
-
-1) Load Modules:
- modprobe ramzswap num_devices=4
- This creates 4 (uninitialized) devices: /dev/ramzswap{0,1,2,3}
- (num_devices parameter is optional. Default: 1)
-
-2) Initialize:
- Use rzscontrol utility to configure and initialize individual
- ramzswap devices. Example:
- rzscontrol /dev/ramzswap2 --init # uses default value of disksize_kb
-
- *See rzscontrol man page for more details and examples*
-
-3) Activate:
- swapon /dev/ramzswap2 # or any other initialized ramzswap device
-
-4) Stats:
- rzscontrol /dev/ramzswap2 --stats
-
-5) Deactivate:
- swapoff /dev/ramzswap2
-
-6) Reset:
- rzscontrol /dev/ramzswap2 --reset
- (This frees all the memory allocated for this device).
-
-
-Please report any problems at:
- - Mailing list: linux-mm-cc at laptop dot org
- - Issue tracker: http://code.google.com/p/compcache/issues/list
-
-Nitin Gupta
-ngupta@...are.org
+zram: Compressed RAM based block devices
+----------------------------------------
+
+Project home: http://compcache.googlecode.com/
+
+* Introduction
+
+The zram module creates RAM based block devices: /dev/ramX (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.
+
+See project home for use cases, performance numbers and a lot more.
+
+Individual zram devices are configured and initialized using zramconfig
+userspace utility as shown in examples below. See zramconfig man page for
+more details.
+
+* Usage
+
+Following shows a typical sequence of steps for using zram.
+
+1) Load Modules:
+ modprobe zram num_devices=4
+ This creates 4 (uninitialized) devices: /dev/zram{0,1,2,3}
+ (num_devices parameter is optional. Default: 1)
+
+2) Initialize:
+ Use zramconfig utility to configure and initialize individual
+ zram devices. For example:
+ zramconfig /dev/zram0 --init # uses default value of disksize_kb
+ zramconfig /dev/zram1 --disksize_kb=102400 # 100MB /dev/zram1
+
+ *See zramconfig man page for more details and examples*
+
+3) Activate:
+ mkswap /dev/zram0
+ swapon /dev/zram0
+
+ mkfs.ext4 /dev/zram1
+ mount /dev/zram1 /tmp
+
+4) Stats:
+ zramconfig /dev/zram0 --stats
+ zramconfig /dev/zram1 --stats
+
+5) Deactivate:
+ swapoff /dev/zram0
+ umount /dev/zram1
+
+6) Reset:
+ zramconfig /dev/zram0 --reset
+ zramconfig /dev/zram1 --reset
+ (This frees memory allocated for the given device).
+
+
+Please report any problems at:
+ - Mailing list: linux-mm-cc at laptop dot org
+ - Issue tracker: http://code.google.com/p/compcache/issues/list
+
+Nitin Gupta
+ngupta@...are.org
--
1.7.0.1
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