zswap: runtime enable/disable
authorDan Streetman <ddstreet@ieee.org>
Thu, 25 Jun 2015 22:00:35 +0000 (15:00 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 26 Jun 2015 00:00:37 +0000 (17:00 -0700)
commitc00ed16a9eb98a7fc076e227bdd95c1451ca1e6e
tree5755f0f5b8cb5bf27b86d4a8b183722442475095
parentd93435c3fba4a47b773693b0c8992470d38510d5
zswap: runtime enable/disable

Change the "enabled" parameter to be configurable at runtime.  Remove the
enabled check from init(), and move it to the frontswap store() function;
when enabled, pages will be stored, and when disabled, pages won't be
stored.

This is almost identical to Seth's patch from 2 years ago:
http://lkml.iu.edu/hypermail/linux/kernel/1307.2/04289.html

[akpm@linux-foundation.org: tweak documentation]
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Suggested-by: Seth Jennings <sjennings@variantweb.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/vm/zswap.txt
mm/zswap.c