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| author | Eric Dumazet <edumazet@google.com> | 2018-03-31 12:58:48 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-31 23:25:39 -0400 |
| commit | ae6da1f503abb5a5081f9f6c4a6881de97830f3e (patch) | |
| tree | 4eea8b062aaa689b2ffe74372acd4377f32e1c0d /lib/rhashtable.c | |
| parent | 483a6e4fa055123142d8956866fe2aa9c98d546d (diff) | |
| download | lwn-ae6da1f503abb5a5081f9f6c4a6881de97830f3e.tar.gz lwn-ae6da1f503abb5a5081f9f6c4a6881de97830f3e.zip | |
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/rhashtable.c')
| -rw-r--r-- | lib/rhashtable.c | 2 |
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; |