summaryrefslogtreecommitdiff
path: root/include/linux/backing-dev.h
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2015-07-13 17:28:09 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-13 17:28:09 -0700
commit638d3c63811e31b2745f7fdd568b38c8abcffe03 (patch)
tree606426ab4de84e59c5f50e1e3cce6e24819d45af /include/linux/backing-dev.h
parent74fe61f17e999a458d5f64ca2aa9a0282ca32198 (diff)
parentf760b87f8f12eb262f14603e65042996fe03720e (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts: net/bridge/br_mdb.c Minor conflict in br_mdb.c, in 'net' we added a memset of the on-stack 'ip' variable whereas in 'net-next' we assign a new member 'vid'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/backing-dev.h')
-rw-r--r--include/linux/backing-dev.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 0e6d4828a77a..0fe9df983ab7 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -15,6 +15,7 @@
#include <linux/writeback.h>
#include <linux/blk-cgroup.h>
#include <linux/backing-dev-defs.h>
+#include <linux/slab.h>
int __must_check bdi_init(struct backing_dev_info *bdi);
void bdi_destroy(struct backing_dev_info *bdi);
@@ -465,11 +466,14 @@ static inline bool inode_cgwb_enabled(struct inode *inode)
static inline struct bdi_writeback_congested *
wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp)
{
- return bdi->wb.congested;
+ atomic_inc(&bdi->wb_congested->refcnt);
+ return bdi->wb_congested;
}
static inline void wb_congested_put(struct bdi_writeback_congested *congested)
{
+ if (atomic_dec_and_test(&congested->refcnt))
+ kfree(congested);
}
static inline struct bdi_writeback *wb_find_current(struct backing_dev_info *bdi)