[dm-devel] [PATCH 0/4] dm: fix various issues with bio splitting code
Mike Snitzer
snitzer at redhat.com
Sat Jan 19 18:05:02 UTC 2019
Hi,
These mostly stable@ patches will be sent to Linus for 5.0-rc4
inclusion (would've sent today for 5.0-rc3 but I don't yet have
linux-next coverage).
Just wanted to give a heads up because some of the problems fixed
could bite other users of the bio_split()+generic_make_request()
recursive pattern. We should probably factor out some helpers that
all users could share (e.g. so they don't forget to set
BIO_QUEUE_ENTERED or call trace_block_split(), etc).
Thanks,
Mike
Mike Snitzer (4):
dm: fix clone_bio() to trigger blk_recount_segments()
dm: fix redundant IO accounting for bios that need splitting
dm: fix missing bio_split() pattern code in __split_and_process_bio()
dm: fix dm_wq_work() to only use __split_and_process_bio() if appropriate
drivers/md/dm.c | 44 ++++++++++++++++++++++++++++++++------------
1 file changed, 32 insertions(+), 12 deletions(-)
--
2.15.0
More information about the dm-devel
mailing list