Messages in this thread | | | Date | Sun, 23 Nov 2014 21:30:40 +0100 | From | Pieter Smith <> | Subject | Re: [PATCH 0/6] kernel tinification: optionally compile out splice family of syscalls (splice, vmsplice, tee and sendfile) |
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On Sun, Nov 23, 2014 at 11:43:26AM -0800, Josh Triplett wrote: > On Sun, Nov 23, 2014 at 01:46:23PM -0500, David Miller wrote: > > Truly removing sendfile/sendpage means that you can't even compile NFS > > into the tree. > > If you mean the in-kernel nfsd (CONFIG_NFSD), that already has a large > stack of "select" and "depends on", both directly and indirectly; adding > a "select SPLICE_SYSCALL" to it seems fine. (That select does need > adding, though. Pieter, you need to test-compile more than just > tinyconfig and defconfig. Try an allyesconfig with *just* splice turned > off, and make sure that compiles.)
Did exacly that. Took forever on my hardware, but no problems.
> Given the requirements of running a file server in the kernel, I'd > expect CONFIG_NFSD to end up with several more selects of optional > functionality in the future. It seems rather likely that the average > embedded system will be compiling out NFS. :) > > Also, this patch series compiles out splice and sendfile, including > several *users* of sendpage; it doesn't compile out the sendpage > support/infrastructure itself. > > - Josh Triplett
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