On Tue, Sep 2, 2025 at 1:53 PM Lorenzo Stoakes
<lorenzo.stoakes@xxxxxxxxxx> wrote:
> The f_op->mmap() callback is deprecated, and we are in the process of
> slowly converting users to f_op->mmap_prepare().
>
> While some filesystems require additional work to be done before they can
> be converted, the gfs2 and udf filesystems (like most) are simple and can
> simply be replaced right away.
>
> This patch adapts them to do so.
>
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
> ---
> fs/gfs2/file.c | 12 ++++++------
> fs/udf/file.c | 8 +++++---
> 2 files changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
> index bc67fa058c84..c28ff8786238 100644
> --- a/fs/gfs2/file.c
> +++ b/fs/gfs2/file.c
> @@ -577,7 +577,7 @@ static const struct vm_operations_struct gfs2_vm_ops = {
> };
>
> /**
> - * gfs2_mmap
> + * gfs2_mmap_prepare
> * @file: The file to map
> * @vma: The VMA which described the mapping
> *
> @@ -588,8 +588,9 @@ static const struct vm_operations_struct gfs2_vm_ops = {
> * Returns: 0
> */
>
> -static int gfs2_mmap(struct file *file, struct vm_area_struct *vma)
> +static int gfs2_mmap_prepare(struct vm_area_desc *desc)
> {
> + struct file *file = desc->file;
> struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
>
> if (!(file->f_flags & O_NOATIME) &&
> @@ -605,7 +606,7 @@ static int gfs2_mmap(struct file *file, struct vm_area_struct *vma)
> gfs2_glock_dq_uninit(&i_gh);
> file_accessed(file);
> }
> - vma->vm_ops = &gfs2_vm_ops;
> + desc->vm_ops = &gfs2_vm_ops;
>
> return 0;
> }
> @@ -1585,7 +1586,7 @@ const struct file_operations gfs2_file_fops = {
> .iopoll = iocb_bio_iopoll,
> .unlocked_ioctl = gfs2_ioctl,
> .compat_ioctl = gfs2_compat_ioctl,
> - .mmap = gfs2_mmap,
> + .mmap_prepare = gfs2_mmap,
This ought to be:
.mmap_prepare = gfs2_mmap_prepare,
> .open = gfs2_open,
> .release = gfs2_release,
> .fsync = gfs2_fsync,
> @@ -1620,7 +1621,7 @@ const struct file_operations gfs2_file_fops_nolock = {
> .iopoll = iocb_bio_iopoll,
> .unlocked_ioctl = gfs2_ioctl,
> .compat_ioctl = gfs2_compat_ioctl,
> - .mmap = gfs2_mmap,
> + .mmap_prepare = gfs2_mmap_prepare,
> .open = gfs2_open,
> .release = gfs2_release,
> .fsync = gfs2_fsync,
> @@ -1639,4 +1640,3 @@ const struct file_operations gfs2_dir_fops_nolock = {
> .fsync = gfs2_fsync,
> .llseek = default_llseek,
> };
> -
> diff --git a/fs/udf/file.c b/fs/udf/file.c
> index 0d76c4f37b3e..fbb2d6ba8ca2 100644
> --- a/fs/udf/file.c
> +++ b/fs/udf/file.c
> @@ -189,10 +189,12 @@ static int udf_release_file(struct inode *inode, struct file *filp)
> return 0;
> }
>
> -static int udf_file_mmap(struct file *file, struct vm_area_struct *vma)
> +static int udf_file_mmap_prepare(struct vm_area_desc *desc)
> {
> + struct file *file = desc->file;
> +
> file_accessed(file);
> - vma->vm_ops = &udf_file_vm_ops;
> + desc->vm_ops = &udf_file_vm_ops;
>
> return 0;
> }
> @@ -201,7 +203,7 @@ const struct file_operations udf_file_operations = {
> .read_iter = generic_file_read_iter,
> .unlocked_ioctl = udf_ioctl,
> .open = generic_file_open,
> - .mmap = udf_file_mmap,
> + .mmap_prepare = udf_file_mmap_prepare,
> .write_iter = udf_file_write_iter,
> .release = udf_release_file,
> .fsync = generic_file_fsync,
> --
> 2.50.1
>
Thanks,
Andreas
