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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2009-04-02 16:57:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:04:56 -0700
commit627991a20b3f4d504d20466ab405fe035cb1a20a (patch)
treeac1d7e0bc0881cf31c72ab1f830de904d52ef13e /init/Kconfig
parenta3b2d692690aef228e493b1beaafe5364cab3237 (diff)
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memcg: remove redundant message at swapon
It's pointed out that swap_cgroup's message at swapon() is nonsense. Because * It can be calculated very easily if all necessary information is written in Kconfig. * It's not necessary to annoying people at every swapon(). In other view, now, memory usage per swp_entry is reduced to 2bytes from 8bytes(64bit) and I think it's reasonably small. Reported-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/Kconfig')
-rw-r--r--init/Kconfig2
1 files changed, 2 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 14c483d2b7c..92d41060393 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -597,6 +597,8 @@ config CGROUP_MEM_RES_CTLR_SWAP
is disabled by boot option, this will be automatically disabled and
there will be no overhead from this. Even when you set this config=y,
if boot option "noswapaccount" is set, swap will not be accounted.
+ Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page
+ size is 4096bytes, 512k per 1Gbytes of swap.
endif # CGROUPS