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authorLinux Build Service Account <lnxbuild@localhost>2019-06-30 03:26:38 -0700
committerLinux Build Service Account <lnxbuild@localhost>2019-06-30 03:26:38 -0700
commitf6f18bf58a688e45e149708a00659bd1010ef94c (patch)
treeaea1549c4c8f28ad359a92b7702481b2cb369d20 /include/linux/backing-dev-defs.h
parentc9d92a953ba0dffba643376ec463754a88db107a (diff)
parent17c66e9e49a181498ae3c75809c98fdbe630de28 (diff)
Merge 17c66e9e49a181498ae3c75809c98fdbe630de28 on remote branch
Change-Id: I49238aefe09bba152a8000c046959157c328f183
Diffstat (limited to 'include/linux/backing-dev-defs.h')
-rw-r--r--include/linux/backing-dev-defs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index a6296c2ffd93..b90dff08edb0 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -160,6 +160,7 @@ struct backing_dev_info {
struct radix_tree_root cgwb_tree; /* radix tree of active cgroup wbs */
struct rb_root cgwb_congested_tree; /* their congested states */
atomic_t usage_cnt; /* counts both cgwbs and cgwb_contested's */
+ struct rw_semaphore wb_switch_rwsem; /* no cgwb switch while syncing */
#else
struct bdi_writeback_congested *wb_congested;
#endif