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    SubjectRe: [RFC] simple_recursive_removal()
    On Fri, Nov 15, 2019 at 06:42:09PM +0000, Al Viro wrote:
    > Come to think of that, if we use IS_DEADDIR as "no more additions" marking,
    > that looks like a good candidate for all in-kernel rm -rf on ramfs-style
    > filesystems without cross-directory renames. This bit in kill_it() above
    > if victim is regular
    > __debugfs_file_removed(victim)
    > would be an fs-specific callback passed by the caller, turning the whole
    > thing into this:

    Umm... A bit more than that, actually - the callback would be
    void remove_one(struct dentry *victim)
    {
    if (d_is_reg(victim))
    __debugfs_file_removed(victim);
    simple_release_fs(&debugfs_mount, &debugfs_mount_count);
    }
    and the caller would do
    simple_pin_fs(&debug_fs_type, &debugfs_mount, &debugfs_mount_count);
    simple_recursive_removal(dentry, remove_one);
    simple_release_fs(&debugfs_mount, &debugfs_mount_count);

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