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| author | Eric Dumazet <edumazet@google.com> | 2018-09-13 07:58:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-19 22:43:45 +0200 |
| commit | 33dc9f7c5d127bfc203a17f7a31d4dcc754376df (patch) | |
| tree | 4be57c14303e8bedccd8e84cf1f95a1a2ce43683 | |
| parent | 11be675bf0aaf4a6dcde817126168b9cbd8ba90e (diff) | |
| download | linux-exynos-33dc9f7c5d127bfc203a17f7a31d4dcc754376df.tar.gz linux-exynos-33dc9f7c5d127bfc203a17f7a31d4dcc754376df.tar.bz2 linux-exynos-33dc9f7c5d127bfc203a17f7a31d4dcc754376df.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>
(cherry picked from commit ae6da1f503abb5a5081f9f6c4a6881de97830f3e)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 39215c724fc7..cebbcec877d7 100644 --- a/lib/rhashtable.c +++ b/lib/rhashtable.c @@ -364,6 +364,7 @@ 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. */ @@ -1073,6 +1074,7 @@ 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; |