bpf: Remove unused MT_ENTRY define

The range tree introduction removed the need for maple tree usage
but missed removing the MT_ENTRY defined value that was used to
mark maple tree allocated entries.
Remove the MT_ENTRY define.

Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Link: https://lore.kernel.org/r/20241223115901.14207-1-lpieralisi@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/kernel/bpf/arena.c b/kernel/bpf/arena.c
index 945a5680f6a54800be404c173a0a32ee0cc6dca6..f5f6b00a982e7bbfd7fbe916e709dbb00f04d96b 100644 (file)
--- a/kernel/bpf/arena.c
+++ b/kernel/bpf/arena.c
@@ -257,8 +257,6 @@ static void arena_vm_close(struct vm_area_struct *vma)
        kfree(vml);
 }
 
-#define MT_ENTRY ((void *)&arena_map_ops) /* unused. has to be valid pointer */
-
 static vm_fault_t arena_vm_fault(struct vm_fault *vmf)
 {
        struct bpf_map *map = vmf->vma->vm_file->private_data;