[merged mm-stable] mm-vmalloc-refactor-vmalloc_dump_obj-function.patch removed from -mm tree

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The quilt patch titled
     Subject: mm: vmalloc: refactor vmalloc_dump_obj() function
has been removed from the -mm tree.  Its filename was
     mm-vmalloc-refactor-vmalloc_dump_obj-function.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx>
Subject: mm: vmalloc: refactor vmalloc_dump_obj() function
Date: Wed, 24 Jan 2024 19:09:20 +0100

This patch tends to simplify the function in question, by removing an
extra stack "objp" variable, returning back to an early exit approach if
spin_trylock() fails or VA was not found.

Link: https://lkml.kernel.org/r/20240124180920.50725-2-urezki@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Reviewed-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/vmalloc.c |   33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

--- a/mm/vmalloc.c~mm-vmalloc-refactor-vmalloc_dump_obj-function
+++ a/mm/vmalloc.c
@@ -4696,34 +4696,35 @@ void pcpu_free_vm_areas(struct vm_struct
 #ifdef CONFIG_PRINTK
 bool vmalloc_dump_obj(void *object)
 {
-	void *objp = (void *)PAGE_ALIGN((unsigned long)object);
 	const void *caller;
+	struct vm_struct *vm;
 	struct vmap_area *va;
 	struct vmap_node *vn;
 	unsigned long addr;
 	unsigned int nr_pages;
-	bool success = false;
 
-	vn = addr_to_node((unsigned long)objp);
+	addr = PAGE_ALIGN((unsigned long) object);
+	vn = addr_to_node(addr);
 
-	if (spin_trylock(&vn->busy.lock)) {
-		va = __find_vmap_area((unsigned long)objp, &vn->busy.root);
-
-		if (va && va->vm) {
-			addr = (unsigned long)va->vm->addr;
-			caller = va->vm->caller;
-			nr_pages = va->vm->nr_pages;
-			success = true;
-		}
+	if (!spin_trylock(&vn->busy.lock))
+		return false;
 
+	va = __find_vmap_area(addr, &vn->busy.root);
+	if (!va || !va->vm) {
 		spin_unlock(&vn->busy.lock);
+		return false;
 	}
 
-	if (success)
-		pr_cont(" %u-page vmalloc region starting at %#lx allocated at %pS\n",
-			nr_pages, addr, caller);
+	vm = va->vm;
+	addr = (unsigned long) vm->addr;
+	caller = vm->caller;
+	nr_pages = vm->nr_pages;
+	spin_unlock(&vn->busy.lock);
+
+	pr_cont(" %u-page vmalloc region starting at %#lx allocated at %pS\n",
+		nr_pages, addr, caller);
 
-	return success;
+	return true;
 }
 #endif
 
_

Patches currently in -mm which might be from urezki@xxxxxxxxx are






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