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| author | Pavel Emelyanov <xemul@openvz.org> | 2008-04-29 01:00:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:10 -0700 |
| commit | 29f2a4dac856e9433a502b05b40e8e90385d8e27 (patch) | |
| tree | 242772a246a6a5170ed5183d3fe3944a6f36a169 /include | |
| parent | 85cc59db12724e1248f5e4841e61339cf485d5c7 (diff) | |
| download | linux-3.10-29f2a4dac856e9433a502b05b40e8e90385d8e27.tar.gz linux-3.10-29f2a4dac856e9433a502b05b40e8e90385d8e27.tar.bz2 linux-3.10-29f2a4dac856e9433a502b05b40e8e90385d8e27.zip | |
memcgroup: implement failcounter reset
This is a very common requirement from people using the resource accounting
facilities (not only memcgroup but also OpenVZ beancounters). They want to
put the cgroup in an initial state without re-creating it.
For example after re-configuring a group people want to observe how this new
configuration fits the group needs without saving the previous failcnt value.
Merge two resets into one mem_cgroup_reset() function to demonstrate how
multiplexing work.
Besides, I have plans to move the files, that correspond to res_counter to the
res_counter.c file and somehow "import" them into controller. I don't know
how to make it gracefully yet, but merging resets of max_usage and failcnt in
one function will be there for sure.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/res_counter.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index 629d0ea2d07..6d9e1fca098 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -143,4 +143,12 @@ static inline void res_counter_reset_max(struct res_counter *cnt) spin_unlock_irqrestore(&cnt->lock, flags); } +static inline void res_counter_reset_failcnt(struct res_counter *cnt) +{ + unsigned long flags; + + spin_lock_irqsave(&cnt->lock, flags); + cnt->failcnt = 0; + spin_unlock_irqrestore(&cnt->lock, flags); +} #endif |