On 01/14/2018 03:42 PM, Coly Li wrote: > In order to catch I/O error of backing device, a separate bi_end_io > call back is required. Then a per backing device counter can record I/O > errors number and retire the backing device if the counter reaches a > per backing device I/O error limit. > > This patch adds backing_request_endio() to bcache backing device I/O code > path, this is a preparation for further complicated backing device failure > handling. So far there is no real code logic change, I make this change a > separate patch to make sure it is stable and reliable for further work. > > Signed-off-by: Coly Li <colyli@xxxxxxx> > Cc: Junhui Tang <tang.junhui@xxxxxxxxxx> > Cc: Michael Lyle <mlyle@xxxxxxxx> > --- > drivers/md/bcache/request.c | 95 +++++++++++++++++++++++++++++++++++-------- > drivers/md/bcache/super.c | 1 + > drivers/md/bcache/writeback.c | 1 + > 3 files changed, 81 insertions(+), 16 deletions(-) > Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)
