[PATCH V2 08/10] block, throttle: allow sharing cgroup statistic files

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From: Angelo Ruocco <angeloruocco90@xxxxxxxxx>

Some of the cgroup files defined in the throttle policy have the same
meaning as those defined in the proportional share policy.

This commit uses the new file sharing interface in cgroup to share
these files.

Signed-off-by: Angelo Ruocco <angeloruocco90@xxxxxxxxx>
Signed-off-by: Paolo Valente <paolo.valente@xxxxxxxxxx>
---
 block/blk-throttle.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 6bfdaac53b6f..95825448c031 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -1491,22 +1491,30 @@ static struct cftype throtl_legacy_files[] = {
 		.write = tg_set_conf_uint,
 	},
 	{
-		.name = "throttle.io_service_bytes",
+		.name = "io_service_bytes",
+		.owner_name = "throttle",
+		.flags = CFTYPE_SHARES_FILE,
 		.private = (unsigned long)&blkcg_policy_throtl,
 		.seq_show_cft = blkg_print_stat_bytes,
 	},
 	{
-		.name = "throttle.io_service_bytes_recursive",
+		.name = "io_service_bytes_recursive",
+		.owner_name = "throttle",
+		.flags = CFTYPE_SHARES_FILE,
 		.private = (unsigned long)&blkcg_policy_throtl,
 		.seq_show_cft = blkg_print_stat_bytes_recursive,
 	},
 	{
-		.name = "throttle.io_serviced",
+		.name = "io_serviced",
+		.owner_name = "throttle",
+		.flags = CFTYPE_SHARES_FILE,
 		.private = (unsigned long)&blkcg_policy_throtl,
 		.seq_show_cft = blkg_print_stat_ios,
 	},
 	{
-		.name = "throttle.io_serviced_recursive",
+		.name = "io_serviced_recursive",
+		.owner_name = "throttle",
+		.flags = CFTYPE_SHARES_FILE,
 		.private = (unsigned long)&blkcg_policy_throtl,
 		.seq_show_cft = blkg_print_stat_ios_recursive,
 	},
-- 
2.16.1




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