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| author |   Chris Mason <chris.mason@oracle.com> | 2010-04-22 21:59:15 -0400 |
|---|---|---|
| committer |   Andy Grover <andy.grover@oracle.com> | 2010-09-08 18:12:28 -0700 |
| commit | 764f2dd92f5cd308d1c4372b33fea2b265c093f5 (patch) | |
| tree | f979329a2b5bfb0c92fc83e951d9ac7654c4ba78 /net/rds/ib.c | |
| parent | rds: per-rm flush_wait waitq (diff) | |
| download | linux-dev-764f2dd92f5cd308d1c4372b33fea2b265c093f5.tar.xz linux-dev-764f2dd92f5cd308d1c4372b33fea2b265c093f5.zip | |
rds: rcu-ize rds_ib_get_device()
rds_ib_get_device is called very often as we turn an
ip address into a corresponding device structure. It currently
take a global spinlock as it walks different lists to find active
devices.
This commit changes the lists over to RCU, which isn't very complex
because they are not updated very often at all.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'net/rds/ib.c')
| -rw-r--r-- | net/rds/ib.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/rds/ib.c b/net/rds/ib.c index 927c481b5245..7a2131d37dfb 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -137,6 +137,7 @@ void rds_ib_remove_one(struct ib_device *device) if (!rds_ibdev) return; + synchronize_rcu(); list_for_each_entry_safe(i_ipaddr, i_next, &rds_ibdev->ipaddr_list, list) { list_del(&i_ipaddr->list); kfree(i_ipaddr); |