From d60beb1f698a429825ea2c463ee9e3dc3b1a79b7 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Fri, 20 Jan 2023 11:26:16 -0500 Subject: [PATCH] ipc/shm: use the vma iterator for munmap calls Pass through the vma iterator to do_vmi_munmap() to handle the iterator state internally Link: https://lkml.kernel.org/r/20230120162650.984577-16-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett Signed-off-by: Andrew Morton --- ipc/shm.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/ipc/shm.c b/ipc/shm.c index bd2fcc4d454e..1c6a6b319a49 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -1786,8 +1786,8 @@ long ksys_shmdt(char __user *shmaddr) */ file = vma->vm_file; size = i_size_read(file_inode(vma->vm_file)); - do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start, NULL); - mas_pause(&vmi.mas); + do_vmi_munmap(&vmi, mm, vma->vm_start, + vma->vm_end - vma->vm_start, NULL, false); /* * We discovered the size of the shm segment, so * break out of here and fall through to the next @@ -1810,10 +1810,9 @@ long ksys_shmdt(char __user *shmaddr) /* finding a matching vma now does not alter retval */ if ((vma->vm_ops == &shm_vm_ops) && ((vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) && - (vma->vm_file == file)) { - do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start, NULL); - mas_pause(&vmi.mas); - } + (vma->vm_file == file)) + do_vmi_munmap(&vmi, mm, vma->vm_start, + vma->vm_end - vma->vm_start, NULL, false); vma = vma_next(&vmi); }