Re: [bpf-next 1/3] bpf: Move bpf_prog_clone_free into filter.h file

Move bpf_prog_clone_free function into filter.h, so we can use
it in other file.

Signed-off-by: He Fengqing <redacted>
---
 include/linux/filter.h | 15 +++++++++++++++
 kernel/bpf/core.c      | 20 +-------------------
 2 files changed, 16 insertions(+), 19 deletions(-)

diff --git a/include/linux/filter.h b/include/linux/filter.h
index 472f97074da0..f39e008a377d 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h

@@ -884,6 +884,21 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_old, unsigned int size,
                                  gfp_t gfp_extra_flags);
 void __bpf_prog_free(struct bpf_prog *fp);

+static inline void bpf_prog_clone_free(struct bpf_prog *fp)
+{
+       /* aux was stolen by the other clone, so we cannot free
+        * it from this path! It will be freed eventually by the
+        * other program on release.
+        *
+        * At this point, we don't need a deferred release since
+        * clone is guaranteed to not be locked.
+        */
+       fp->aux = NULL;
+       fp->stats = NULL;
+       fp->active = NULL;
+       __bpf_prog_free(fp);
+}
+
 static inline void bpf_prog_unlock_free(struct bpf_prog *fp)
 {
        __bpf_prog_free(fp);

diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 034ad93a1ad7..49b0311f48c1 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c

@@ -238,10 +238,7 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_old, unsigned int size,
                /* We keep fp->aux from fp_old around in the new
                 * reallocated structure.
                 */