On Thu, Jan 26, 2017 at 12:52:15PM -0700, Jens Axboe wrote: > I screwed this up when splitting up the patchset, that last break needs to > be removed as well, of course. Updated below: > > > From 9d68cf9232c06a793e305d10b6d655df4beae928 Mon Sep 17 00:00:00 2001 > From: Jens Axboe <axboe@xxxxxx> > Date: Thu, 26 Jan 2017 12:50:36 -0700 > Subject: [PATCH 1/4] blk-mq: fix potential race in queue restart and driver > tag allocation > > Once we mark the queue as needing a restart, re-check if we can > get a driver tag. This fixes a theoretical issue where the needed > IO completes _after_ blk_mq_get_driver_tag() fails, but before we > manage to set the restart bit. Reviewed-by: Omar Sandoval <osandov@xxxxxx> > Signed-off-by: Jens Axboe <axboe@xxxxxx> > --- > block/blk-mq.c | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
