[15/94] kernel/events/uprobes: Use vma_lookup() in find_active_uprobe()
diff mbox series

Message ID 20210428153542.2814175-16-Liam.Howlett@Oracle.com
State New, archived
Headers show
Series
  • Introducing the Maple Tree
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Commit Message

Liam Howlett April 28, 2021, 3:35 p.m. UTC
vma_lookup() will only return the VMA which contains the address
requested so the code is easier to read.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 kernel/events/uprobes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch
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diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 6addc9780319..907d4ee00cb2 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -2046,8 +2046,8 @@  static struct uprobe *find_active_uprobe(unsigned long bp_vaddr, int *is_swbp)
 	struct vm_area_struct *vma;
 
 	mmap_read_lock(mm);
-	vma = find_vma(mm, bp_vaddr);
-	if (vma && vma->vm_start <= bp_vaddr) {
+	vma = vma_lookup(mm, bp_vaddr);
+	if (vma) {
 		if (valid_vma(vma, false)) {
 			struct inode *inode = file_inode(vma->vm_file);
 			loff_t offset = vaddr_to_offset(vma, bp_vaddr);