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| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2014-04-07 15:38:07 -0700 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-05-11 20:41:57 +0800 |
| commit | 65281bd78e42b4137f9cf87c4b734ff2325bf483 (patch) | |
| tree | 0cc6fe55c271ab02fa115b3deaa030423f883ac9 /Documentation | |
| parent | 7d9e350a92b55768e644d5f7b1aacab9acd032f6 (diff) | |
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>
(cherry picked from commit e64cd51d2fa87733176246101df871a8ac5c7c20)
Signed-off-by: Alex Shi <alex.shi@linaro.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 2eccddffa6c8..393541be1ec0 100644 --- a/Documentation/blockdev/zram.txt +++ b/Documentation/blockdev/zram.txt @@ -33,6 +33,11 @@ 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 |