path: root/security/device_cgroup.c
diff options
authorTejun Heo <>2013-08-08 20:11:24 -0400
committerTejun Heo <>2013-08-08 20:11:24 -0400
commit182446d087906de40e514573a92a97b203695f71 (patch)
tree6aee96219c82d0a64b9d389c50666c1ce0ec27ee /security/device_cgroup.c
parent67f4c36f83455b253445b2cb28ac9a2c4f85d99a (diff)
cgroup: pass around cgroup_subsys_state instead of cgroup in file methods
cgroup is currently in the process of transitioning to using struct cgroup_subsys_state * as the primary handle instead of struct cgroup. Please see the previous commit which converts the subsystem methods for rationale. This patch converts all cftype file operations to take @css instead of @cgroup. cftypes for the cgroup core files don't have their subsytem pointer set. These will automatically use the dummy_css added by the previous patch and can be converted the same way. Most subsystem conversions are straight forwards but there are some interesting ones. * freezer: update_if_frozen() is also converted to take @css instead of @cgroup for consistency. This will make the code look simpler too once iterators are converted to use css. * memory/vmpressure: mem_cgroup_from_css() needs to be exported to vmpressure while mem_cgroup_from_cont() can be made static. Updated accordingly. * cpu: cgroup_tg() doesn't have any user left. Removed. * cpuacct: cgroup_ca() doesn't have any user left. Removed. * hugetlb: hugetlb_cgroup_form_cgroup() doesn't have any user left. Removed. * net_cls: cgrp_cls_state() doesn't have any user left. Removed. Signed-off-by: Tejun Heo <> Acked-by: Li Zefan <> Acked-by: Michal Hocko <> Acked-by: Vivek Goyal <> Acked-by: Aristeu Rozanski <> Acked-by: Daniel Wagner <> Cc: Peter Zijlstra <> Cc: Ingo Molnar <> Cc: Johannes Weiner <> Cc: Balbir Singh <> Cc: Matt Helsley <> Cc: Jens Axboe <> Cc: Steven Rostedt <>
Diffstat (limited to 'security/device_cgroup.c')
1 files changed, 6 insertions, 6 deletions
diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 7293ac49ba7b..e0ca464fa854 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -289,10 +289,10 @@ static void set_majmin(char *str, unsigned m)
sprintf(str, "%u", m);
-static int devcgroup_seq_read(struct cgroup *cgroup, struct cftype *cft,
- struct seq_file *m)
+static int devcgroup_seq_read(struct cgroup_subsys_state *css,
+ struct cftype *cft, struct seq_file *m)
- struct dev_cgroup *devcgroup = cgroup_to_devcgroup(cgroup);
+ struct dev_cgroup *devcgroup = css_to_devcgroup(css);
struct dev_exception_item *ex;
char maj[MAJMINLEN], min[MAJMINLEN], acc[ACCLEN];
@@ -669,13 +669,13 @@ static int devcgroup_update_access(struct dev_cgroup *devcgroup,
return rc;
-static int devcgroup_access_write(struct cgroup *cgrp, struct cftype *cft,
- const char *buffer)
+static int devcgroup_access_write(struct cgroup_subsys_state *css,
+ struct cftype *cft, const char *buffer)
int retval;
- retval = devcgroup_update_access(cgroup_to_devcgroup(cgrp),
+ retval = devcgroup_update_access(css_to_devcgroup(css),
cft->private, buffer);
return retval;