---
mm/mmap.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/mm/mmap.c b/mm/mmap.c
index dd4b35a25aeb..f927744e6384 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1464,9 +1464,17 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
*/
if (unlikely(vm_flags != vma->vm_flags && vmg.prev)) {
vmg.flags = vma->vm_flags;
+
+ pr_err("LJS: HIT CASE [%lx, %lx) orig flags=[%lu] flags=[%lu]\n",
+ vma->vm_start, vma->vm_end, vm_flags, vma->vm_flags);
+
/* If this fails, state is reset ready for a reattempt. */
merge = vma_merge_new_range(&vmg);
+ pr_err("LJS: HIT CASE POST MERGE [%lx, %lx) merge=%s\n",
+ vma->vm_start, vma->vm_end,
+ merge == NULL ? "false" : "success");
+
if (merge) {
/*
* ->mmap() can change vma->vm_file and fput
--
2.46.2
