Commit 8ddbb312 authored by David S. Miller's avatar David S. Miller

Merge branch 'bpf-htab-fixes'

Alexei Starovoitov says:

====================
bpf: htab fixes

Two bpf hashtable fixes. See individual patches for details.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 745cb7f8 4fe84359
...@@ -29,6 +29,11 @@ struct hlist_nulls_node { ...@@ -29,6 +29,11 @@ struct hlist_nulls_node {
((ptr)->first = (struct hlist_nulls_node *) NULLS_MARKER(nulls)) ((ptr)->first = (struct hlist_nulls_node *) NULLS_MARKER(nulls))
#define hlist_nulls_entry(ptr, type, member) container_of(ptr,type,member) #define hlist_nulls_entry(ptr, type, member) container_of(ptr,type,member)
#define hlist_nulls_entry_safe(ptr, type, member) \
({ typeof(ptr) ____ptr = (ptr); \
!is_a_nulls(____ptr) ? hlist_nulls_entry(____ptr, type, member) : NULL; \
})
/** /**
* ptr_is_a_nulls - Test if a ptr is a nulls * ptr_is_a_nulls - Test if a ptr is a nulls
* @ptr: ptr to be tested * @ptr: ptr to be tested
......
...@@ -156,5 +156,19 @@ static inline void hlist_nulls_add_tail_rcu(struct hlist_nulls_node *n, ...@@ -156,5 +156,19 @@ static inline void hlist_nulls_add_tail_rcu(struct hlist_nulls_node *n,
({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); 1; }); \ ({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); 1; }); \
pos = rcu_dereference_raw(hlist_nulls_next_rcu(pos))) pos = rcu_dereference_raw(hlist_nulls_next_rcu(pos)))
/**
* hlist_nulls_for_each_entry_safe -
* iterate over list of given type safe against removal of list entry
* @tpos: the type * to use as a loop cursor.
* @pos: the &struct hlist_nulls_node to use as a loop cursor.
* @head: the head for your list.
* @member: the name of the hlist_nulls_node within the struct.
*/
#define hlist_nulls_for_each_entry_safe(tpos, pos, head, member) \
for (({barrier();}), \
pos = rcu_dereference_raw(hlist_nulls_first_rcu(head)); \
(!is_a_nulls(pos)) && \
({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); \
pos = rcu_dereference_raw(hlist_nulls_next_rcu(pos)); 1; });)
#endif #endif
#endif #endif
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