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authorEric Dumazet <edumazet@google.com>2018-03-31 22:58:48 +0300
committerDavid S. Miller <davem@davemloft.net>2018-04-01 06:25:39 +0300
commitae6da1f503abb5a5081f9f6c4a6881de97830f3e (patch)
tree4eea8b062aaa689b2ffe74372acd4377f32e1c0d /lib
parent483a6e4fa055123142d8956866fe2aa9c98d546d (diff)
downloadlinux-ae6da1f503abb5a5081f9f6c4a6881de97830f3e.tar.xz
rhashtable: add schedule points
Rehashing and destroying large hash table takes a lot of time, and happens in process context. It is safe to add cond_resched() in rhashtable_rehash_table() and rhashtable_free_and_destroy() Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib')
-rw-r--r--lib/rhashtable.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 47de025b6245..2b2b79974b61 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -333,6 +333,7 @@ static int rhashtable_rehash_table(struct rhashtable *ht)
err = rhashtable_rehash_chain(ht, old_hash);
if (err)
return err;
+ cond_resched();
}
/* Publish the new table pointer. */
@@ -1112,6 +1113,7 @@ void rhashtable_free_and_destroy(struct rhashtable *ht,
for (i = 0; i < tbl->size; i++) {
struct rhash_head *pos, *next;
+ cond_resched();
for (pos = rht_dereference(*rht_bucket(tbl, i), ht),
next = !rht_is_a_nulls(pos) ?
rht_dereference(pos->next, ht) : NULL;