Messages in this thread | | | Date | Thu, 28 May 2020 20:00:52 +0100 | From | Al Viro <> | Subject | Re: [PATCH 09/14] fs: don't change the address limit for ->write_iter in __kernel_write |
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On Thu, May 28, 2020 at 07:40:38AM +0200, Christoph Hellwig wrote: > If we write to a file that implements ->write_iter there is no need > to change the address limit if we send a kvec down. Implement that > case, and prefer it over using plain ->write with a changed address > limit if available.
Umm... It needs a comment along the lines of "weird shits like /dev/sg that currently check for uaccess_kernel() will just have to make sure they never switch to ->write_iter()"
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