On Tue, Nov 18, 2025 at 10:10:33PM -0800, Bart Van Assche wrote: > Is the following deadlock inherent to this approach? > - Several bios are present on zwplug->bio_list and these bios cannot be > submitted because their starting offset is past the write pointer. > - No new bios can be allocated because all memory is in use. > - A deadlock occurs because none of the queued bios can be submitted > and no new bio can be allocated.
This can if the number of in-flight bios is larger than bio mempool reserve. Which is real, but we also have this in various other submitters that hold bios to submit in a list. This suggests it is mostly theoretical, but I'd still love to address it for all these cases.
