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Fixes bug in filter rta copy-on-write.

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Filters should try to copy-on-write just cached rtas.
This commit is contained in:
Ondrej Zajicek 2009-09-18 01:11:09 +02:00
parent 46eb80d5d5
commit db96fccb31
1 changed files with 4 additions and 7 deletions
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11
filter/filter.c
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@ -291,7 +291,6 @@ static struct rte **f_rte, *f_rte_old;
static struct linpool *f_pool;
static struct ea_list **f_tmp_attrs;
static int f_flags;
static rta *f_rta_copy;
/*
* rta_cow - prepare rta for modification by filter
@ -299,8 +298,8 @@ static rta *f_rta_copy;
static void
rta_cow(void)
{
if (!f_rta_copy) {
f_rta_copy = lp_alloc(f_pool, sizeof(rta));
if ((*f_rte)->attrs->aflags & RTAF_CACHED) {
rta *f_rta_copy = lp_alloc(f_pool, sizeof(rta));
memcpy(f_rta_copy, (*f_rte)->attrs, sizeof(rta));
f_rta_copy->aflags = 0;
*f_rte = rte_cow(*f_rte);
@ -686,8 +685,8 @@ interpret(struct f_inst *what)
if (!(what->aux & EAF_TEMP) && (!(f_flags & FF_FORCE_TMPATTR))) {
rta_cow();
l->next = f_rta_copy->eattrs;
f_rta_copy->eattrs = l;
l->next = (*f_rte)->attrs->eattrs;
(*f_rte)->attrs->eattrs = l;
} else {
l->next = (*f_tmp_attrs);
(*f_tmp_attrs) = l;
@ -946,7 +945,6 @@ f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struc
f_tmp_attrs = tmp_attrs;
f_rte = rte;
f_rte_old = *rte;
f_rta_copy = NULL;
f_pool = tmp_pool;
inst = filter->root;
res = interpret(inst);
@ -967,7 +965,6 @@ f_eval_int(struct f_inst *expr)
f_tmp_attrs = NULL;
f_rte = NULL;
f_rte_old = NULL;
f_rta_copy = NULL;
f_pool = cfg_mem;
res = interpret(expr);
if (res.type != T_INT)