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authorBob Copeland <me@bobcopeland.com>2016-03-02 18:09:19 +0300
committerJohannes Berg <johannes.berg@intel.com>2016-04-05 11:56:32 +0300
commit8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697 (patch)
tree5b5a00794c61ddd351c11b2a928e1796290896c7 /net/netlink
parent947c2a0eccec29fcd30e717787e65792b1e607ed (diff)
downloadlinux-8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697.tar.xz
rhashtable: accept GFP flags in rhashtable_walk_init
In certain cases, the 802.11 mesh pathtable code wants to iterate over all of the entries in the forwarding table from the receive path, which is inside an RCU read-side critical section. Enable walks inside atomic sections by allowing GFP_ATOMIC allocations for the walker state. Change all existing callsites to pass in GFP_KERNEL. Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: Bob Copeland <me@bobcopeland.com> [also adjust gfs2/glock.c and rhashtable tests] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/netlink')
-rw-r--r--net/netlink/af_netlink.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 215fc08c02ab..0f16bf635480 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2343,7 +2343,8 @@ static int netlink_walk_start(struct nl_seq_iter *iter)
{
int err;
- err = rhashtable_walk_init(&nl_table[iter->link].hash, &iter->hti);
+ err = rhashtable_walk_init(&nl_table[iter->link].hash, &iter->hti,
+ GFP_KERNEL);
if (err) {
iter->link = MAX_LINKS;
return err;