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authorJulian Anastasov <ja@ssi.bg>2005-07-11 20:59:57 -0700
committerDavid S. Miller <davem@davemloft.net>2005-07-11 20:59:57 -0700
commitaf9debd461d10fe582c9c0e80eafa69f698331ed (patch)
treef9473e1ec1c1ec18bf90ff8049fe63f5abd35ef7 /net/ipv4/ipvs/ip_vs_ctl.c
parentf5b8adb4f5767415b7b00e32e4766a052e2ed4cc (diff)
downloadblackbird-op-linux-af9debd461d10fe582c9c0e80eafa69f698331ed.tar.gz
blackbird-op-linux-af9debd461d10fe582c9c0e80eafa69f698331ed.zip
[IPVS]: Add and reorder bh locks after moving to keventd.
An addition to the last ipvs changes that move update_defense_level/si_meminfo to keventd: - ip_vs_random_dropentry now runs in process context and should use _bh locks to protect from softirqs - update_defense_level still needs _bh locks after si_meminfo is called, for the same purpose Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ipvs/ip_vs_ctl.c')
-rw-r--r--net/ipv4/ipvs/ip_vs_ctl.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index 12a82e91d22a..7d99ede2ef79 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -90,7 +90,8 @@ int ip_vs_get_debug_level(void)
#endif
/*
- * update_defense_level is called from keventd and from sysctl.
+ * update_defense_level is called from keventd and from sysctl,
+ * so it needs to protect itself from softirqs
*/
static void update_defense_level(void)
{
@@ -110,6 +111,8 @@ static void update_defense_level(void)
nomem = (availmem < sysctl_ip_vs_amemthresh);
+ local_bh_disable();
+
/* drop_entry */
spin_lock(&__ip_vs_dropentry_lock);
switch (sysctl_ip_vs_drop_entry) {
@@ -206,6 +209,8 @@ static void update_defense_level(void)
if (to_change >= 0)
ip_vs_protocol_timeout_change(sysctl_ip_vs_secure_tcp>1);
write_unlock(&__ip_vs_securetcp_lock);
+
+ local_bh_enable();
}
@@ -1360,9 +1365,7 @@ proc_do_defense_mode(ctl_table *table, int write, struct file * filp,
/* Restore the correct value */
*valp = val;
} else {
- local_bh_disable();
update_defense_level();
- local_bh_enable();
}
}
return rc;
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