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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-09 15:03:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-09 15:03:33 -0700
commit14208b0ec56919f5333dd654b1a7d10765d0ad05 (patch)
tree474b46c351efced45925d15dc2e0049c49784716 /block/blk-throttle.c
parent6ea4fa70e4af0da8b133b246458fb789d8cb3985 (diff)
parentc731ae1d0f02a300697a8b1564780ad28a6c2013 (diff)
downloadlinux-14208b0ec56919f5333dd654b1a7d10765d0ad05.tar.bz2
Merge branch 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo: "A lot of activities on cgroup side. Heavy restructuring including locking simplification took place to improve the code base and enable implementation of the unified hierarchy, which currently exists behind a __DEVEL__ mount option. The core support is mostly complete but individual controllers need further work. To explain the design and rationales of the the unified hierarchy Documentation/cgroups/unified-hierarchy.txt is added. Another notable change is css (cgroup_subsys_state - what each controller uses to identify and interact with a cgroup) iteration update. This is part of continuing updates on css object lifetime and visibility. cgroup started with reference count draining on removal way back and is now reaching a point where csses behave and are iterated like normal refcnted objects albeit with some complexities to allow distinguishing the state where they're being deleted. The css iteration update isn't taken advantage of yet but is planned to be used to simplify memcg significantly" * 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (77 commits) cgroup: disallow disabled controllers on the default hierarchy cgroup: don't destroy the default root cgroup: disallow debug controller on the default hierarchy cgroup: clean up MAINTAINERS entries cgroup: implement css_tryget() device_cgroup: use css_has_online_children() instead of has_children() cgroup: convert cgroup_has_live_children() into css_has_online_children() cgroup: use CSS_ONLINE instead of CGRP_DEAD cgroup: iterate cgroup_subsys_states directly cgroup: introduce CSS_RELEASED and reduce css iteration fallback window cgroup: move cgroup->serial_nr into cgroup_subsys_state cgroup: link all cgroup_subsys_states in their sibling lists cgroup: move cgroup->sibling and ->children into cgroup_subsys_state cgroup: remove cgroup->parent device_cgroup: remove direct access to cgroup->children memcg: update memcg_has_children() to use css_next_child() memcg: remove tasks/children test from mem_cgroup_force_empty() cgroup: remove css_parent() cgroup: skip refcnting on normal root csses and cgrp_dfl_root self css cgroup: use cgroup->self.refcnt for cgroup refcnting ...
Diffstat (limited to 'block/blk-throttle.c')
-rw-r--r--block/blk-throttle.c32
1 files changed, 16 insertions, 16 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 9353b4683359..3fdb21a390c1 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -1346,10 +1346,10 @@ static int tg_print_conf_uint(struct seq_file *sf, void *v)
return 0;
}
-static int tg_set_conf(struct cgroup_subsys_state *css, struct cftype *cft,
- const char *buf, bool is_u64)
+static ssize_t tg_set_conf(struct kernfs_open_file *of,
+ char *buf, size_t nbytes, loff_t off, bool is_u64)
{
- struct blkcg *blkcg = css_to_blkcg(css);
+ struct blkcg *blkcg = css_to_blkcg(of_css(of));
struct blkg_conf_ctx ctx;
struct throtl_grp *tg;
struct throtl_service_queue *sq;
@@ -1368,9 +1368,9 @@ static int tg_set_conf(struct cgroup_subsys_state *css, struct cftype *cft,
ctx.v = -1;
if (is_u64)
- *(u64 *)((void *)tg + cft->private) = ctx.v;
+ *(u64 *)((void *)tg + of_cft(of)->private) = ctx.v;
else
- *(unsigned int *)((void *)tg + cft->private) = ctx.v;
+ *(unsigned int *)((void *)tg + of_cft(of)->private) = ctx.v;
throtl_log(&tg->service_queue,
"limit change rbps=%llu wbps=%llu riops=%u wiops=%u",
@@ -1404,19 +1404,19 @@ static int tg_set_conf(struct cgroup_subsys_state *css, struct cftype *cft,
}
blkg_conf_finish(&ctx);
- return 0;
+ return nbytes;
}
-static int tg_set_conf_u64(struct cgroup_subsys_state *css, struct cftype *cft,
- char *buf)
+static ssize_t tg_set_conf_u64(struct kernfs_open_file *of,
+ char *buf, size_t nbytes, loff_t off)
{
- return tg_set_conf(css, cft, buf, true);
+ return tg_set_conf(of, buf, nbytes, off, true);
}
-static int tg_set_conf_uint(struct cgroup_subsys_state *css, struct cftype *cft,
- char *buf)
+static ssize_t tg_set_conf_uint(struct kernfs_open_file *of,
+ char *buf, size_t nbytes, loff_t off)
{
- return tg_set_conf(css, cft, buf, false);
+ return tg_set_conf(of, buf, nbytes, off, false);
}
static struct cftype throtl_files[] = {
@@ -1424,25 +1424,25 @@ static struct cftype throtl_files[] = {
.name = "throttle.read_bps_device",
.private = offsetof(struct throtl_grp, bps[READ]),
.seq_show = tg_print_conf_u64,
- .write_string = tg_set_conf_u64,
+ .write = tg_set_conf_u64,
},
{
.name = "throttle.write_bps_device",
.private = offsetof(struct throtl_grp, bps[WRITE]),
.seq_show = tg_print_conf_u64,
- .write_string = tg_set_conf_u64,
+ .write = tg_set_conf_u64,
},
{
.name = "throttle.read_iops_device",
.private = offsetof(struct throtl_grp, iops[READ]),
.seq_show = tg_print_conf_uint,
- .write_string = tg_set_conf_uint,
+ .write = tg_set_conf_uint,
},
{
.name = "throttle.write_iops_device",
.private = offsetof(struct throtl_grp, iops[WRITE]),
.seq_show = tg_print_conf_uint,
- .write_string = tg_set_conf_uint,
+ .write = tg_set_conf_uint,
},
{
.name = "throttle.io_service_bytes",