Commit a5e674ac authored Mar 09, 2017 by Daniel Rosenberg

ANDROID: sdcardfs: remove unnecessary call to do_munmap



Adapted from wrapfs
commit 5be6de9ecf02 ("Wrapfs: use vm_munmap in ->mmap")
commit 2c9f6014a8bb ("Wrapfs: remove unnecessary call
to vm_unmap in ->mmap")

Code is unnecessary and causes deadlocks in newer kernels.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 35766959
Change-Id: Ia252d60c60799d7e28fc5f1f0f5b5ec2430a2379

parent 610f179d

fs/sdcardfs/file.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -176,12 +176,6 @@ static int sdcardfs_mmap(struct file file, struct vm_area_struct vma)
		goto out;
		}
		saved_vm_ops = vma->vm_ops; /* save: came from lower ->mmap */
		err = do_munmap(current->mm, vma->vm_start,
		vma->vm_end - vma->vm_start);
		if (err) {
		pr_err("sdcardfs: do_munmap failed %d\n", err);
		goto out;
		}
		}

		/*