Date: Fri, 04 Jan 2008 13:48:36 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-current@freebsd.org, Jason Evans <jasone@freebsd.org>, Igor Mozolevsky <igor@hybrid-lab.co.uk> Subject: Re: sbrk(2) broken Message-ID: <86ir29ah97.fsf@ds4.des.no> In-Reply-To: <20080104113426.T77222@fledge.watson.org> (Robert Watson's message of "Fri\, 4 Jan 2008 11\:38\:23 %2B0000 \(GMT\)") References: <477C82F0.5060809@freebsd.org> <863ateemw2.fsf@ds4.des.no> <20080104002002.L30578@fledge.watson.org> <a2b6592c0801040241l598ea9b7h57ad6889a1eccd3@mail.gmail.com> <86bq81c12d.fsf@ds4.des.no> <a2b6592c0801040318s9986f10u40cf725bc96304c6@mail.gmail.com> <20080104111938.N77222@fledge.watson.org> <a2b6592c0801040330g229030dbvc903e4f09d589644@mail.gmail.com> <20080104113426.T77222@fledge.watson.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Robert Watson <rwatson@FreeBSD.org> writes: > As I mentioned in my e-mail, it would be nice if our file system > supported a way to reserve blocks for files without hooking them up to > the file's visiible address space (in order to avoid zeroing them, > which is required if you do want to hook them up for an unprivileged > process). However, that feature doesn't currently exist. Even for files which are intended to be filled up immediately, telling the file system ahead of time how much data will be written would allow it to make much better layout decisions. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?86ir29ah97.fsf>