Messages in this thread | | | From | David Laight <> | Subject | RE: [PATCH v3 2/2] iov_iter: Don't deal with iter->copy_mc in memcpy_from_iter_mc() | Date | Wed, 16 Aug 2023 14:19:02 +0000 |
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From: David Howells > Sent: Wednesday, August 16, 2023 2:01 PM > > David Laight <David.Laight@ACULAB.COM> wrote: > > > > > Couldn't the relevant code directly call __copy_from_iter_mc() ? > > Or a version then checked iov_is_copy_mc() and then fell > > back to the standard function. > > No, because the marked iterator is handed by the coredump code to > __kernel_write_iter() and thence on to who-knows-what driver - which will call > copy_from_iter() or some such. $DRIVER shouldn't need to know about > ->copy_mc.
What about ITER_BVEC_MC ??
David
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