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| author | Stephen Hemminger <shemminger@vyatta.com> | 2010-02-17 18:48:44 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-17 18:48:44 -0800 |
| commit | 6457d26bd40077238799e31df2b800bcf4ef9177 (patch) | |
| tree | 4d9f085a8f33fa5528c14cbf60678295bbe74d11 | |
| parent | dfa1a041094f4a6e5845a19a1b10e317676722e7 (diff) | |
| download | kernel_samsung_crespo-6457d26bd40077238799e31df2b800bcf4ef9177.zip kernel_samsung_crespo-6457d26bd40077238799e31df2b800bcf4ef9177.tar.gz kernel_samsung_crespo-6457d26bd40077238799e31df2b800bcf4ef9177.tar.bz2 | |
IPv6: convert mc_lock to spinlock
Only used for writing, so convert to spinlock
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/if_inet6.h | 2 | ||||
| -rw-r--r-- | net/ipv6/mcast.c | 19 |
2 files changed, 11 insertions, 10 deletions
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index e9d69d1..545d8b0 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -157,7 +157,7 @@ struct inet6_dev { struct ifmcaddr6 *mc_list; struct ifmcaddr6 *mc_tomb; - rwlock_t mc_lock; + spinlock_t mc_lock; unsigned char mc_qrv; unsigned char mc_gq_running; unsigned char mc_ifc_count; diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 25f6cca..bcd9719 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -793,10 +793,10 @@ static void mld_add_delrec(struct inet6_dev *idev, struct ifmcaddr6 *im) } spin_unlock_bh(&im->mca_lock); - write_lock_bh(&idev->mc_lock); + spin_lock_bh(&idev->mc_lock); pmc->next = idev->mc_tomb; idev->mc_tomb = pmc; - write_unlock_bh(&idev->mc_lock); + spin_unlock_bh(&idev->mc_lock); } static void mld_del_delrec(struct inet6_dev *idev, struct in6_addr *pmca) @@ -804,7 +804,7 @@ static void mld_del_delrec(struct inet6_dev *idev, struct in6_addr *pmca) struct ifmcaddr6 *pmc, *pmc_prev; struct ip6_sf_list *psf, *psf_next; - write_lock_bh(&idev->mc_lock); + spin_lock_bh(&idev->mc_lock); pmc_prev = NULL; for (pmc=idev->mc_tomb; pmc; pmc=pmc->next) { if (ipv6_addr_equal(&pmc->mca_addr, pmca)) @@ -817,7 +817,8 @@ static void mld_del_delrec(struct inet6_dev *idev, struct in6_addr *pmca) else idev->mc_tomb = pmc->next; } - write_unlock_bh(&idev->mc_lock); + spin_unlock_bh(&idev->mc_lock); + if (pmc) { for (psf=pmc->mca_tomb; psf; psf=psf_next) { psf_next = psf->sf_next; @@ -832,10 +833,10 @@ static void mld_clear_delrec(struct inet6_dev *idev) { struct ifmcaddr6 *pmc, *nextpmc; - write_lock_bh(&idev->mc_lock); + spin_lock_bh(&idev->mc_lock); pmc = idev->mc_tomb; idev->mc_tomb = NULL; - write_unlock_bh(&idev->mc_lock); + spin_unlock_bh(&idev->mc_lock); for (; pmc; pmc = nextpmc) { nextpmc = pmc->next; @@ -1696,7 +1697,7 @@ static void mld_send_cr(struct inet6_dev *idev) int type, dtype; read_lock_bh(&idev->lock); - write_lock_bh(&idev->mc_lock); + spin_lock(&idev->mc_lock); /* deleted MCA's */ pmc_prev = NULL; @@ -1730,7 +1731,7 @@ static void mld_send_cr(struct inet6_dev *idev) } else pmc_prev = pmc; } - write_unlock_bh(&idev->mc_lock); + spin_unlock(&idev->mc_lock); /* change recs */ for (pmc=idev->mc_list; pmc; pmc=pmc->next) { @@ -2311,7 +2312,7 @@ void ipv6_mc_up(struct inet6_dev *idev) void ipv6_mc_init_dev(struct inet6_dev *idev) { write_lock_bh(&idev->lock); - rwlock_init(&idev->mc_lock); + spin_lock_init(&idev->mc_lock); idev->mc_gq_running = 0; setup_timer(&idev->mc_gq_timer, mld_gq_timer_expire, (unsigned long)idev); |