diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-04-11 10:47:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-04-11 10:47:28 +0200 |
| commit | b6466d53afdb0c3ca058848cd4c12e141aba0763 (patch) | |
| tree | 06da4bf69879a7a26dc78d1b4f4b47ca4aaf4c74 /include/linux/list_nulls.h | |
| parent | 4ffa3c977b5da2907eb294dc6d0259a02f2284aa (diff) | |
| parent | 7f00f388712b29005782bad7e4b25942620f3b9c (diff) | |
Merge branch 'x86/urgent' into x86/cpu, to resolve conflict
Conflicts:
arch/x86/kernel/cpu/intel_rdt_schemata.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/list_nulls.h')
| -rw-r--r-- | include/linux/list_nulls.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/list_nulls.h b/include/linux/list_nulls.h index b01fe1009084..87ff4f58a2f0 100644 --- a/include/linux/list_nulls.h +++ b/include/linux/list_nulls.h @@ -29,6 +29,11 @@ struct hlist_nulls_node { ((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_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: ptr to be tested |