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Date: Sun, 23 Nov 2014 11:43:26 -0800 From: Josh Triplett <josh@...htriplett.org> To: David Miller <davem@...emloft.net> Cc: pieter@...sman.nl, alexander.h.duyck@...el.com, viro@...iv.linux.org.uk, ast@...mgrid.com, akpm@...ux-foundation.org, beber@...eeweb.net, catalina.mocanu@...il.com, dborkman@...hat.com, edumazet@...gle.com, ebiederm@...ssion.com, fabf@...net.be, fuse-devel@...ts.sourceforge.net, geert@...ux-m68k.org, hughd@...gle.com, iulia.manda21@...il.com, JBeulich@...e.com, bfields@...ldses.org, jlayton@...chiereds.net, linux-api@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, mcgrof@...e.com, mattst88@...il.com, mgorman@...e.de, mst@...hat.com, miklos@...redi.hu, netdev@...r.kernel.org, oleg@...hat.com, Paul.Durrant@...rix.com, paulmck@...ux.vnet.ibm.com, pefoley2@...oley.com, tgraf@...g.ch, therbert@...gle.com, willemb@...gle.com, xiaoguangrong@...ux.vnet.ibm.com, zhenglong.cai@...c.com.cn Subject: Re: [PATCH 0/6] kernel tinification: optionally compile out splice family of syscalls (splice, vmsplice, tee and sendfile) 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.) 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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