Re: [PATCH v2 3/3] block: avoid to call .bi_end_io() recursively

On Wed, Apr 27, 2016 at 12:02 PM, NeilBrown wrote: > On Wed, Apr 27 2016, Ming Lei wrote: > >> There were reports about heavy stack use by recursive calling >> .bi_end_io()([1][2][3]). For example, more than 16K stack is >> consumed in a single bio complete path[3], and in [2] stack >> overflow ca

Re: [PATCH v2 3/3] block: avoid to call .bi_end_io() recursively

On Wed, Apr 27 2016, Ming Lei wrote: > There were reports about heavy stack use by recursive calling > .bi_end_io()([1][2][3]). For example, more than 16K stack is > consumed in a single bio complete path[3], and in [2] stack > overflow can be triggered if 20 nested dm-crypt is used. > > Also patc

[PATCH v2 3/3] block: avoid to call .bi_end_io() recursively

There were reports about heavy stack use by recursive calling .bi_end_io()([1][2][3]). For example, more than 16K stack is consumed in a single bio complete path[3], and in [2] stack overflow can be triggered if 20 nested dm-crypt is used. Also patches[1] [2] [3] were posted for addressing the iss