Date: Mon, 6 Oct 2003 18:22:06 -0400 (EDT) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: Mark Valentine <mark@valentine.me.uk> Cc: arch@freebsd.org Subject: Re: Alignment of disk-I/O from userland. Message-ID: <200310062222.h96MM6MO093683@khavrinen.lcs.mit.edu> In-Reply-To: <200310062220.h96MK7PI061345@dotar.thuvia.org> References: <mailpost.1065476850.59321@thuvia.org> <200310062220.h96MK7PI061345@dotar.thuvia.org>
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<<On Mon, 6 Oct 2003 23:20:06 +0000, Mark Valentine <mark@valentine.me.uk> said: > It would be reasonable to enforce such restrictions on a raw device if > we still had block devices around, but it doesn't seem reasonable now. I think you've got that backwards. When we had block devices, they would provide extra buffering to avoid I/O-size breakage. Character devices, which are all we have now, never made any promises. -GAWollman
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