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author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-06-18 03:27:19 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-19 00:03:48 +0400 |
commit | 22a668d7c3ef833e7d67e9cef587ecc78069d532 (patch) | |
tree | da9f2e7ea7224c347dfe33ea9d4dddd944c861ac /kernel/res_counter.c | |
parent | 8a9478ca7f4bcb8945cec7f95d52dae2d5e50cbd (diff) | |
download | linux-22a668d7c3ef833e7d67e9cef587ecc78069d532.tar.xz |
memcg: fix behavior under memory.limit equals to memsw.limit
A user can set memcg.limit_in_bytes == memcg.memsw.limit_in_bytes when the
user just want to limit the total size of applications, in other words,
not very interested in memory usage itself. In this case, swap-out will
be done only by global-LRU.
But, under current implementation, memory.limit_in_bytes is checked at
first and try_to_free_page() may do swap-out. But, that swap-out is
useless for memsw.limit_in_bytes and the thread may hit limit again.
This patch tries to fix the current behavior at memory.limit ==
memsw.limit case. And documentation is updated to explain the behavior of
this special case.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/res_counter.c')
0 files changed, 0 insertions, 0 deletions