diff options
| author | hsu <hsu@FreeBSD.org> | 2002-12-24 03:03:39 +0000 |
|---|---|---|
| committer | hsu <hsu@FreeBSD.org> | 2002-12-24 03:03:39 +0000 |
| commit | 32436a25c0510e4371c6f02353b447c09ba9db0d (patch) | |
| tree | 5e53dfd4f16f3a5c2080f2ce73aed007b1be63a1 /sys/kern/vfs_export.c | |
| parent | 018c02046059a2588bdd154c9136e4467aafa156 (diff) | |
| download | FreeBSD-src-32436a25c0510e4371c6f02353b447c09ba9db0d.zip FreeBSD-src-32436a25c0510e4371c6f02353b447c09ba9db0d.tar.gz | |
SMP locking for radix nodes.
Diffstat (limited to 'sys/kern/vfs_export.c')
| -rw-r--r-- | sys/kern/vfs_export.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/sys/kern/vfs_export.c b/sys/kern/vfs_export.c index 22927bd..b909b83 100644 --- a/sys/kern/vfs_export.c +++ b/sys/kern/vfs_export.c @@ -137,7 +137,7 @@ vfs_hang_addrlist(mp, nep, argp) smask->sa_len = argp->ex_masklen; } i = saddr->sa_family; - if ((rnh = nep->ne_rtable[i]) == 0) { + if ((rnh = nep->ne_rtable[i]) == NULL) { /* * Seems silly to initialize every AF when most are not used, * do so on demand here @@ -148,13 +148,15 @@ vfs_hang_addrlist(mp, nep, argp) dom->dom_rtoffset); break; } - if ((rnh = nep->ne_rtable[i]) == 0) { + if ((rnh = nep->ne_rtable[i]) == NULL) { error = ENOBUFS; goto out; } } + RADIX_NODE_HEAD_LOCK(rnh); rn = (*rnh->rnh_addaddr)(saddr, smask, rnh, np->netc_rnodes); - if (rn == 0 || np != (struct netcred *)rn) { /* already exists */ + RADIX_NODE_HEAD_UNLOCK(rnh); + if (rn == NULL || np != (struct netcred *)rn) { /* already exists */ error = EPERM; goto out; } @@ -197,9 +199,11 @@ vfs_free_addrlist(nep) for (i = 0; i <= AF_MAX; i++) if ((rnh = nep->ne_rtable[i])) { + RADIX_NODE_HEAD_LOCK(rnh); (*rnh->rnh_walktree) (rnh, vfs_free_netcred, rnh); + RADIX_NODE_HEAD_DESTROY(rnh); free(rnh, M_RTABLE); - nep->ne_rtable[i] = 0; + nep->ne_rtable[i] = NULL; /* not SMP safe XXX */ } } @@ -355,8 +359,10 @@ vfs_export_lookup(mp, nam) saddr = nam; rnh = nep->ne_rtable[saddr->sa_family]; if (rnh != NULL) { + RADIX_NODE_HEAD_LOCK(rnh); np = (struct netcred *) (*rnh->rnh_matchaddr)(saddr, rnh); + RADIX_NODE_HEAD_UNLOCK(rnh); if (np && np->netc_rnodes->rn_flags & RNF_ROOT) np = NULL; } |
