On Thu, Apr 20, 2023 at 10:44 AM Alexander Larsson <alexl@xxxxxxxxxx> wrote:
>
> This allows us to get the real path from the ovl_entry in ovl_lookup()
> before having finished setting up the resulting inode.
>
> Signed-off-by: Alexander Larsson <alexl@xxxxxxxxxx>
> ---
> fs/overlayfs/overlayfs.h | 2 ++
> fs/overlayfs/util.c | 25 ++++++++++++++++++-------
> 2 files changed, 20 insertions(+), 7 deletions(-)
>
> diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
> index 4e327665c316..477008186d18 100644
> --- a/fs/overlayfs/overlayfs.h
> +++ b/fs/overlayfs/overlayfs.h
> @@ -395,6 +395,8 @@ void ovl_path_upper(struct dentry *dentry, struct path *path);
> void ovl_path_lower(struct dentry *dentry, struct path *path);
> void ovl_path_lowerdata(struct dentry *dentry, struct path *path);
> void ovl_i_path_real(struct inode *inode, struct path *path);
> +void ovl_entry_path_real(struct ovl_fs *ofs, struct ovl_entry *oe,
> + struct dentry *upperdentry, struct path *path);
> enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path);
> enum ovl_path_type ovl_path_realdata(struct dentry *dentry, struct path *path);
> struct dentry *ovl_dentry_upper(struct dentry *dentry);
> diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
> index 9a042768013e..77c954591daa 100644
> --- a/fs/overlayfs/util.c
> +++ b/fs/overlayfs/util.c
> @@ -351,19 +351,30 @@ struct dentry *ovl_i_dentry_upper(struct inode *inode)
> return ovl_upperdentry_dereference(OVL_I(inode));
> }
>
> -void ovl_i_path_real(struct inode *inode, struct path *path)
> -{
> - struct ovl_path *lowerstack = ovl_lowerstack(OVL_I_E(inode));
> +void ovl_entry_path_real(struct ovl_fs *ofs,
Nit: I would use ovl_e_ prefix. Not critical.
Thanks,
Amir.
