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ovl: separate detection of remote upper layer from stacked overlay

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Following patch will allow remote as upper layer, but not overlay stacked
on upper layer.  Separate the two concepts.

This patch is doesn't change behavior.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi
2020-03-17 15:04:22 +01:00
parent 3bb7df928a
commit 7925dad839
3 changed files with 10 additions and 10 deletions
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14
fs/overlayfs/super.c
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@@ -752,13 +752,13 @@ static int ovl_mount_dir(const char *name, struct path *path)
ovl_unescape(tmp);
err = ovl_mount_dir_noesc(tmp, path);
if (!err)
if (ovl_dentry_remote(path->dentry)) {
pr_err("filesystem on '%s' not supported as upperdir\n",
tmp);
path_put_init(path);
err = -EINVAL;
}
if (!err && (ovl_dentry_remote(path->dentry) ||
path->dentry->d_flags & DCACHE_OP_REAL)) {
pr_err("filesystem on '%s' not supported as upperdir\n",
tmp);
path_put_init(path);
err = -EINVAL;
}
kfree(tmp);
}
return err;