On Fri, 18 Oct, at 10:30:58PM, Seiji Aguchi wrote: > The scanning and deleting logic is still needed. In case an entry(A) > is found, the pointer is saved to psi->data. And efi_pstore_read() > passes the entry(A) to a pstore filesystem by releasing > __efivars->lock. > > And then, the pstore filesystem calls efi_pstore_read() again and the > same entry(A), which is saved to psi->data, is used for re-scanning a > sysfs-list. (That is why list_for_each_entry_safe_from () is used in > efi_pstore_sysfs_entry_iter().) > > So, to protect the entry(A), the logic is needed because, in pstore > filesystem, __efivars->lock Is released. Very good point.
-- Matt Fleming, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
