Re: [PATCH 1/1] block: fix blk_queue_split() resource exhaustion

2016-07-11 Thread Lars Ellenberg
Dropped the XXX comment (oops), moved the current_has_pending_bios() helper to bio.h and dropped the identical ones from bio.c and md.h. Reposted in-thread as [PATCH v2 1/1] block: fix blk_queue_split() resource exhaustion Thanks, Lars Ellenberg

Re: [PATCH 1/1] block: fix blk_queue_split() resource exhaustion

2016-07-08 Thread Mike Snitzer
On Fri, Jul 08 2016 at 11:04am -0400, Lars Ellenberg wrote: > For a long time, generic_make_request() converts recursion into > iteration by queuing recursive arguments on current->bio_list. > > This is convenient for stacking drivers, > the top-most driver would take the originally submitted bi

[PATCH 1/1] block: fix blk_queue_split() resource exhaustion

2016-07-08 Thread Lars Ellenberg
For a long time, generic_make_request() converts recursion into iteration by queuing recursive arguments on current->bio_list. This is convenient for stacking drivers, the top-most driver would take the originally submitted bio, and re-submit a re-mapped version of it, or one or more clones, or on