From 3d8ed88ba7f612305785fc1f3cefa043f817bb3e Mon Sep 17 00:00:00 2001 From: Sergey Senozhatsky Date: Thu, 25 Jun 2015 15:00:00 -0700 Subject: [PATCH] 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 Acked-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/blockdev/zram.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 ======= -- 2.20.1