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[DECNET]: Convert rwlock to spinlock

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As per Stephen Hemminger's recent patch to ipv4/fib_semantics.c this
is the same change but for DECnet.

Signed-off-by: Steven Whitehouse <steve@chygwyn.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steven Whitehouse 2006-08-09 16:00:57 -07:00 committed by David S. Miller
parent a8731cbf61
commit a22ec367b0
1 changed files with 5 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

10
net/decnet/dn_fib.c
View file

@ -59,7 +59,7 @@ extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb);
static DEFINE_SPINLOCK(dn_fib_multipath_lock); static DEFINE_SPINLOCK(dn_fib_multipath_lock);
static struct dn_fib_info *dn_fib_info_list; static struct dn_fib_info *dn_fib_info_list;
static DEFINE_RWLOCK(dn_fib_info_lock); static DEFINE_SPINLOCK(dn_fib_info_lock);
static struct static struct
{ {
@ -97,7 +97,7 @@ void dn_fib_free_info(struct dn_fib_info *fi)
void dn_fib_release_info(struct dn_fib_info *fi) void dn_fib_release_info(struct dn_fib_info *fi)
{ {
write_lock(&dn_fib_info_lock); spin_lock(&dn_fib_info_lock);
if (fi && --fi->fib_treeref == 0) { if (fi && --fi->fib_treeref == 0) {
if (fi->fib_next) if (fi->fib_next)
fi->fib_next->fib_prev = fi->fib_prev; fi->fib_next->fib_prev = fi->fib_prev;
@ -108,7 +108,7 @@ void dn_fib_release_info(struct dn_fib_info *fi)
fi->fib_dead = 1; fi->fib_dead = 1;
dn_fib_info_put(fi); dn_fib_info_put(fi);
} }
write_unlock(&dn_fib_info_lock); spin_unlock(&dn_fib_info_lock);
} }
static inline int dn_fib_nh_comp(const struct dn_fib_info *fi, const struct dn_fib_info *ofi) static inline int dn_fib_nh_comp(const struct dn_fib_info *fi, const struct dn_fib_info *ofi)
@ -379,13 +379,13 @@ struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, struct dn_kern_rta
fi->fib_treeref++; fi->fib_treeref++;
atomic_inc(&fi->fib_clntref); atomic_inc(&fi->fib_clntref);
write_lock(&dn_fib_info_lock); spin_lock(&dn_fib_info_lock);
fi->fib_next = dn_fib_info_list; fi->fib_next = dn_fib_info_list;
fi->fib_prev = NULL; fi->fib_prev = NULL;
if (dn_fib_info_list) if (dn_fib_info_list)
dn_fib_info_list->fib_prev = fi; dn_fib_info_list->fib_prev = fi;
dn_fib_info_list = fi; dn_fib_info_list = fi;
write_unlock(&dn_fib_info_lock); spin_unlock(&dn_fib_info_lock);
return fi; return fi;
err_inval: err_inval: