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authorAndy Grover <andy.grover@oracle.com>2009-04-01 12:20:19 +0400
committerDavid S. Miller <davem@davemloft.net>2009-04-02 11:52:22 +0400
commit745cbccac3fe8cead529a1b3358e1e86a1505bfa (patch)
tree6c865b19881dbdd64556cc1827f6966d8a646a38 /net/rds/iw.h
parentf1cffcbfcc53b825da7d1d26244aabd8dccb24aa (diff)
downloadlinux-745cbccac3fe8cead529a1b3358e1e86a1505bfa.tar.xz
RDS: Rewrite connection cleanup, fixing oops on rmmod
This fixes a bug where a connection was unexpectedly not on *any* list while being destroyed. It also cleans up some code duplication and regularizes some function names. * Grab appropriate lock in conn_free() and explain in comment * Ensure via locking that a conn is never not on either a dev's list or the nodev list * Add rds_xx_remove_conn() to match rds_xx_add_conn() * Make rds_xx_add_conn() return void * Rename remove_{,nodev_}conns() to destroy_{,nodev_}conns() and unify their implementation in a helper function * Document lock ordering as nodev conn_lock before dev_conn_lock Reported-by: Yosef Etigin <yosefe@voltaire.com> Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/iw.h')
-rw-r--r--net/rds/iw.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/net/rds/iw.h b/net/rds/iw.h
index 0ddda34f2a1c..70eb948f42f4 100644
--- a/net/rds/iw.h
+++ b/net/rds/iw.h
@@ -294,9 +294,17 @@ void rds_iw_cm_connect_complete(struct rds_connection *conn,
/* ib_rdma.c */
int rds_iw_update_cm_id(struct rds_iw_device *rds_iwdev, struct rdma_cm_id *cm_id);
-int rds_iw_add_conn(struct rds_iw_device *rds_iwdev, struct rds_connection *conn);
-void rds_iw_remove_nodev_conns(void);
-void rds_iw_remove_conns(struct rds_iw_device *rds_iwdev);
+void rds_iw_add_conn(struct rds_iw_device *rds_iwdev, struct rds_connection *conn);
+void rds_iw_remove_conn(struct rds_iw_device *rds_iwdev, struct rds_connection *conn);
+void __rds_iw_destroy_conns(struct list_head *list, spinlock_t *list_lock);
+static inline void rds_iw_destroy_nodev_conns(void)
+{
+ __rds_iw_destroy_conns(&iw_nodev_conns, &iw_nodev_conns_lock);
+}
+static inline void rds_iw_destroy_conns(struct rds_iw_device *rds_iwdev)
+{
+ __rds_iw_destroy_conns(&rds_iwdev->conn_list, &rds_iwdev->spinlock);
+}
struct rds_iw_mr_pool *rds_iw_create_mr_pool(struct rds_iw_device *);
void rds_iw_get_mr_info(struct rds_iw_device *rds_iwdev, struct rds_info_rdma_connection *iinfo);
void rds_iw_destroy_mr_pool(struct rds_iw_mr_pool *);