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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2015-06-25 15:00:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 17:00:36 -0700
commit3d8ed88ba7f612305785fc1f3cefa043f817bb3e (patch)
tree328b422c0501463685dd4e2d4c4aec468921d24a /Documentation/blockdev
parent13a18a1c04775e48788a25ba7ed17c885df6b1d1 (diff)
downloadlinux-3d8ed88ba7f612305785fc1f3cefa043f817bb3e.tar.bz2
zram: add `compact` sysfs entry to documentation
We currently don't support zram on-demand device creation. The only way to have N zram devices is to specify num_devices module parameter (default value 1). That means that if, for some reason, at some point, user wants to have N + 1 devies he/she must umount all the existing devices, unload the module, load the module passing num_devices equals to N + 1. This patchset introduces zram-control sysfs class, which has two sysfs attrs: - hot_add -- add a new zram device - hot_remove -- remove a specific (device_id) zram device Usage example: # add a new specific zram device cat /sys/class/zram-control/hot_add 1 # remove a specific zram device echo 4 > /sys/class/zram-control/hot_remove This patch (of 10): Briefly describe missing `compact` sysfs entry. Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/blockdev')
-rw-r--r--Documentation/blockdev/zram.txt2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/blockdev/zram.txt b/Documentation/blockdev/zram.txt
index 48a183e29988..bef499868269 100644
--- a/Documentation/blockdev/zram.txt
+++ b/Documentation/blockdev/zram.txt
@@ -126,7 +126,7 @@ mem_used_max RW the maximum amount memory zram have consumed to
mem_limit RW the maximum amount of memory ZRAM can use to store
the compressed data
num_migrated RO the number of objects migrated migrated by compaction
-
+compact WO trigger memory compaction
WARNING
=======