malhuda/msm-4.14
1
0
Fork 0
mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

rhashtable: add schedule points

Browse Source 
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>
This commit is contained in:
Eric Dumazet 2018-09-13 07:58:40 -07:00 committed by Greg Kroah-Hartman
parent 11be675bf0
commit 33dc9f7c5d
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/rhashtable.c
View File

@ -364,6 +364,7 @@ static int rhashtable_rehash_table(struct rhashtable *ht)
err = rhashtable_rehash_chain(ht, old_hash); err = rhashtable_rehash_chain(ht, old_hash);
if (err) if (err)
return err; return err;
cond_resched();
} }
/* Publish the new table pointer. */ /* Publish the new table pointer. */
@ -1073,6 +1074,7 @@ void rhashtable_free_and_destroy(struct rhashtable *ht,
for (i = 0; i < tbl->size; i++) { for (i = 0; i < tbl->size; i++) {
struct rhash_head *pos, *next; struct rhash_head *pos, *next;
cond_resched();
for (pos = rht_dereference(*rht_bucket(tbl, i), ht), for (pos = rht_dereference(*rht_bucket(tbl, i), ht),
next = !rht_is_a_nulls(pos) ? next = !rht_is_a_nulls(pos) ?
rht_dereference(pos->next, ht) : NULL; rht_dereference(pos->next, ht) : NULL;