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| author |   Tom Herbert <tom@quantonium.net> | 2017-12-04 10:31:42 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-12-11 09:58:38 -0500 |
| commit | 2db54b475ae918d274bfc276416c384ba95e9f94 (patch) | |
| tree | c5e93acd923da0ed13d64dad38fc9d10ff25a229 /include/linux/rhashtable.h | |
| parent | rhashtable: Change rhashtable_walk_start to return void (diff) | |
| download | linux-dev-2db54b475ae918d274bfc276416c384ba95e9f94.tar.xz linux-dev-2db54b475ae918d274bfc276416c384ba95e9f94.zip | |
rhashtable: Add rhastable_walk_peek
This function is like rhashtable_walk_next except that it only returns
the current element in the inter and does not advance the iter.
This patch also creates __rhashtable_walk_find_next. It finds the next
element in the table when the entry cached in iter is NULL or at the end
of a slot. __rhashtable_walk_find_next is called from
rhashtable_walk_next and rhastable_walk_peek.
end_of_table is an added field to the iter structure. This indicates
that the end of table was reached (walker.tbl being NULL is not a
sufficient condition for end of table).
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 'include/linux/rhashtable.h')
| -rw-r--r-- | include/linux/rhashtable.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h index 13ccc483738d..542b1b265ac4 100644 --- a/include/linux/rhashtable.h +++ b/include/linux/rhashtable.h @@ -207,6 +207,7 @@ struct rhashtable_iter { struct rhashtable_walker walker; unsigned int slot; unsigned int skip; + bool end_of_table; }; static inline unsigned long rht_marker(const struct rhashtable *ht, u32 hash) @@ -386,6 +387,7 @@ static inline void rhashtable_walk_start(struct rhashtable_iter *iter) } void *rhashtable_walk_next(struct rhashtable_iter *iter); +void *rhashtable_walk_peek(struct rhashtable_iter *iter); void rhashtable_walk_stop(struct rhashtable_iter *iter) __releases(RCU); void rhashtable_free_and_destroy(struct rhashtable *ht, |