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authorTom Herbert <tom@quantonium.net>2017-12-04 10:31:41 -0800
committerDavid S. Miller <davem@davemloft.net>2017-12-11 09:58:38 -0500
commit97a6ec4ac021f7fbec05c15a3aa0c4aaf0461af5 (patch)
tree06f6f0559c003ac7f718d1453120bf21044d7a35 /lib/test_rhashtable.c
parenta0b586fa75a69578ecf10b40582eed9b35de2432 (diff)
downloadlinux-97a6ec4ac021f7fbec05c15a3aa0c4aaf0461af5.tar.gz
rhashtable: Change rhashtable_walk_start to return void
Most callers of rhashtable_walk_start don't care about a resize event which is indicated by a return value of -EAGAIN. So calls to rhashtable_walk_start are wrapped wih code to ignore -EAGAIN. Something like this is common: ret = rhashtable_walk_start(rhiter); if (ret && ret != -EAGAIN) goto out; Since zero and -EAGAIN are the only possible return values from the function this check is pointless. The condition never evaluates to true. This patch changes rhashtable_walk_start to return void. This simplifies code for the callers that ignore -EAGAIN. For the few cases where the caller cares about the resize event, particularly where the table can be walked in mulitple parts for netlink or seq file dump, the function rhashtable_walk_start_check has been added that returns -EAGAIN on a resize event. Signed-off-by: Tom Herbert <tom@quantonium.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/test_rhashtable.c')
-rw-r--r--lib/test_rhashtable.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c
index 8e83cbdc049c..76d3667fdea2 100644
--- a/lib/test_rhashtable.c
+++ b/lib/test_rhashtable.c
@@ -162,11 +162,7 @@ static void test_bucket_stats(struct rhashtable *ht, unsigned int entries)
return;
}
- err = rhashtable_walk_start(&hti);
- if (err && err != -EAGAIN) {
- pr_warn("Test failed: iterator failed: %d\n", err);
- return;
- }
+ rhashtable_walk_start(&hti);
while ((pos = rhashtable_walk_next(&hti))) {
if (PTR_ERR(pos) == -EAGAIN) {