On Fri, Oct 11, 2024 at 05:11:33PM +0800, Qun-Wei Lin wrote: > This patch splits the BLK_FEAT_SYNCHRONOUS feature flag into two > separate flags: BLK_FEAT_READ_SYNCHRONOUS and > BLK_FEAT_WRITE_SYNCHRONOUS. Similarly, the SWP_SYNCHRONOUS_IO flag is > split into SWP_READ_SYNCHRONOUS_IO and SWP_WRITE_SYNCHRONOUS_IO. > > These changes are motivated by the need to better accommodate certain > swap devices that support synchronous read operations but asynchronous write > operations. > > The existing BLK_FEAT_SYNCHRONOUS and SWP_SYNCHRONOUS_IO flags are not > sufficient for these devices, as they enforce synchronous behavior for > both read and write operations. You're still failing to provide a user. Without that it is dead in the water from the very beginning.
