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| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2014-04-07 15:38:07 -0700 |
|---|---|---|
| committer | Simon Shields <keepcalm444@gmail.com> | 2016-06-12 21:19:59 +1000 |
| commit | c20ebd785b1ce8e68f4f9eafdaf1ea1f7fa2eff8 (patch) | |
| tree | 4fe4d1ba5668a4c5d655c96773cafd14db20b767 /Documentation | |
| parent | 0af6b10ff713d6813006fcf2d26d59804e1da162 (diff) | |
| download | kernel_samsung_smdk4412-c20ebd785b1ce8e68f4f9eafdaf1ea1f7fa2eff8.tar.gz kernel_samsung_smdk4412-c20ebd785b1ce8e68f4f9eafdaf1ea1f7fa2eff8.tar.bz2 kernel_samsung_smdk4412-c20ebd785b1ce8e68f4f9eafdaf1ea1f7fa2eff8.zip | |
zram: move zram size warning to documentation
Move zram warning about disksize and size of memory correlation to zram
documentation.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/blockdev/zram.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/blockdev/zram.txt b/Documentation/blockdev/zram.txt index 765d790ae83..f82d084a388 100644 --- a/Documentation/blockdev/zram.txt +++ b/Documentation/blockdev/zram.txt @@ -35,6 +35,11 @@ Following shows a typical sequence of steps for using zram. echo 512M > /sys/block/zram0/disksize echo 1G > /sys/block/zram0/disksize +Note: +There is little point creating a zram of greater than twice the size of memory +since we expect a 2:1 compression ratio. Note that zram uses about 0.1% of the +size of the disk when not in use so a huge zram is wasteful. + 3) Activate: mkswap /dev/zram0 swapon /dev/zram0 |