On 2022-09-16 05:34, Yu Kuai wrote: > From: Yu Kuai <yukuai3@xxxxxxxxxx> > > Currently, wait_barrier() will hold 'resync_lock' to read 'conf->barrier', > and io can't be dispatched until 'barrier' is dropped. > > Since holding the 'barrier' is not common, convert 'resync_lock' to use > seqlock so that holding lock can be avoided in fast path. > > Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx> Reviewed-and-Tested-by: Logan Gunthorpe <logang@xxxxxxxxxxxx> So far, I've run this series 3 times through the mdadm test suite and haven't detected any issues. Thanks, Logan
