The patch titled
memcgroup: use triggers in force_empty and max_usage files
has been added to the -mm tree. Its filename is
memcgroup-use-triggers-in-force_empty-and-max_usage-files.patch
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------------------------------------------------------
Subject: memcgroup: use triggers in force_empty and max_usage files
From: Pavel Emelyanov <xemul@xxxxxxxxxx>
These two files are essentially event callbacks. They do not care about the
contents of the string, but only about the fact of the write itself.
Signed-off-by: Pavel Emelyanov <xemul@xxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxx>
Cc: Paul Menage <menage@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 21 ++++++---------------
1 file changed, 6 insertions(+), 15 deletions(-)
diff -puN mm/memcontrol.c~memcgroup-use-triggers-in-force_empty-and-max_usage-files mm/memcontrol.c
--- a/mm/memcontrol.c~memcgroup-use-triggers-in-force_empty-and-max_usage-files
+++ a/mm/memcontrol.c
@@ -870,27 +870,18 @@ static ssize_t mem_cgroup_write(struct c
mem_cgroup_write_strategy);
}
-static ssize_t mem_cgroup_max_reset(struct cgroup *cont, struct cftype *cft,
- struct file *file, const char __user *userbuf,
- size_t nbytes, loff_t *ppos)
+static int mem_cgroup_max_reset(struct cgroup *cont, unsigned int event)
{
struct mem_cgroup *mem;
mem = mem_cgroup_from_cont(cont);
res_counter_reset_max(&mem->res);
- return nbytes;
+ return 0;
}
-static ssize_t mem_force_empty_write(struct cgroup *cont,
- struct cftype *cft, struct file *file,
- const char __user *userbuf,
- size_t nbytes, loff_t *ppos)
+static int mem_force_empty_write(struct cgroup *cont, unsigned int event)
{
- struct mem_cgroup *mem = mem_cgroup_from_cont(cont);
- int ret = mem_cgroup_force_empty(mem);
- if (!ret)
- ret = nbytes;
- return ret;
+ return mem_cgroup_force_empty(mem_cgroup_from_cont(cont));
}
static const struct mem_cgroup_stat_desc {
@@ -938,7 +929,7 @@ static struct cftype mem_cgroup_files[]
{
.name = "max_usage_in_bytes",
.private = RES_MAX_USAGE,
- .write = mem_cgroup_max_reset,
+ .trigger = mem_cgroup_max_reset,
.read_u64 = mem_cgroup_read,
},
{
@@ -954,7 +945,7 @@ static struct cftype mem_cgroup_files[]
},
{
.name = "force_empty",
- .write = mem_force_empty_write,
+ .trigger = mem_force_empty_write,
},
{
.name = "stat",
_
Patches currently in -mm which might be from xemul@xxxxxxxxxx are
origin.patch
git-kgdb-light.patch
use-find_task_by_vpid-in-audit-code.patch
ia64-fix-getpid-and-set_tid_address-fast-system-calls-for-pid-namespaces.patch
git-udf.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx-fix-memcg-ooms.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx-just-return-do_try_to_free_pages.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx-just-return-do_try_to_free_pages-do_try_to_free_pages-gfp_mask-redundant.patch
binfmt_miscc-avoid-potential-kernel-stack-overflow.patch
cgroup-api-files-rename-read-write_uint-methods-to-read_write_u64.patch
cgroup-api-files-add-res_counter_read_u64.patch
cgroup-api-files-use-read_u64-in-memory-controller.patch
cgroup-api-files-strip-all-trailing-whitespace-in-cgroup_write_u64.patch
cgroup-api-files-update-cpusets-to-use-cgroup-structured-file-api.patch
cgroup-api-files-update-cpusets-to-use-cgroup-structured-file-api-fix.patch
cgroup-api-files-add-cgroup-map-data-type.patch
cgroup-api-files-use-cgroup-map-for-memcontrol-stats-file.patch
cgroup-api-files-drop-mem_cgroup_force_empty.patch
cgroup-api-files-move-releasable-to-cgroup_debug-subsystem.patch
cgroup-api-files-make-cgroup_debug-default-to-off.patch
cgroups-add-cgroup-support-for-enabling-controllers-at-boot-time.patch
cgroups-add-the-trigger-callback-to-struct-cftype.patch
memory-controller-make-memory-resource-control-aware-of-boot-options.patch
memcgroup-add-the-max_usage-member-on-the-res_counter.patch
add-a-document-describing-the-resource-counter-abstraction-v2.patch
add-a-document-describing-the-resource-counter-abstraction-v2-fix.patch
memcgroup-move-memory-controller-allocations-to-their-own-slabs.patch
memcgroup-use-triggers-in-force_empty-and-max_usage-files.patch
memcgroup-implement-failcounter-reset.patch
remove-unused-variable-from-send_signal.patch
turn-legacy_queue-macro-into-static-inline-function.patch
consolidate-checking-for-ignored-legacy-signals.patch
consolidate-checking-for-ignored-legacy-signals-simplify.patch
signals-consolidate-checks-for-whether-or-not-to-ignore-a-signal.patch
signals-clean-dequeue_signal-from-excess-checks-and-assignments.patch
signals-consolidate-send_sigqueue-and-send_group_sigqueue.patch
signals-cleanup-security_task_kill-usage-implementation.patch
signals-use-__group_complete_signal-for-the-specific-signals-too.patch
signals-fold-complete_signal-into-send_signal-do_send_sigqueue.patch
signals-unify-send_sigqueue-send_group_sigqueue-completely.patch
sysctl-merge-equal-proc_sys_read-and-proc_sys_write.patch
sysctl-clean-from-unneeded-extern-and-forward-declarations.patch
sysctl-add-the-permissions-callback-on-the-ctl_table_root.patch
free_pidmap-turn-it-into-free_pidmapstruct-upid.patch
use-find_task_by_vpid-in-taskstats.patch
deprecate-find_task_by_pid.patch
deprecate-find_task_by_pid-warning-fix.patch
pidns-make-pid-level-and-pid_ns-level-unsigned.patch
reiser4.patch
put_pid-make-sure-we-dont-free-the-live-pid.patch
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