On Fri, Apr 21 2017, Christoph Hellwig wrote: > On Thu, Apr 20, 2017 at 03:38:48PM +1000, NeilBrown wrote: >> This patch converts bioset_create() and >> bioset_create_nobvec() to not create a workqueue so >> alloctions will never trigger punt_bios_to_rescuer(). It >> also introduces bioset_create_rescued() and >> bioset_create_nobvec_rescued() which preserve the old >> behaviour. > > Why these super-early line breaks in the committ message? They make > the text much more awkware compared to say: I usually set a smaller wrap-margin for git comments because of the extra space that git inserts on the left. Maybe I over-do it. > > This patch converts bioset_create() and bioset_create_nobvec() to not > create a workqueue so alloctions will never trigger > punt_bios_to_rescuer(). It also introduces bioset_create_rescued() and > bioset_create_nobvec_rescued() which preserve the old behaviour. > >> static struct bio_set *__bioset_create(unsigned int pool_size, >> unsigned int front_pad, >> - bool create_bvec_pool) >> + bool create_bvec_pool, >> + bool create_rescue_workqueue) > > I'd much prefer a single new bioset_create with a bunch of flags > arguments over the number of new functions and these bool arguments. I was following the existing practice exemplified by bioset_create_nobvec(). By not changing the signature of the function, I can avoid touching quite a few places where it is called. I hope to get rid of the _rescued() versions eventually. That is easier if there are a separate function rather than an extra arg that needs to be removed everywhere. NeilBrown
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