[PATCH bpf-next] bpf: Expose bpf_d_path helper to vfs_read/vfs_write

[Hengqi Chen <hengqi.chen@xxxxxxxxx>]

Add vfs_read and vfs_write to bpf_d_path allowlist.
This will help tools like IOVisor's filetop to get
full file path.

Signed-off-by: Hengqi Chen <hengqi.chen@xxxxxxxxx>
---
 kernel/trace/bpf_trace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 64bd2d84367f..6d3f951f38c5 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -861,6 +861,8 @@ BTF_ID(func, vfs_fallocate)
 BTF_ID(func, dentry_open)
 BTF_ID(func, vfs_getattr)
 BTF_ID(func, filp_close)
+BTF_ID(func, vfs_read)
+BTF_ID(func, vfs_write)
 BTF_SET_END(btf_allowlist_d_path)
 
 static bool bpf_d_path_allowed(const struct bpf_prog *prog)
-- 
2.25.1