Date: Mon, 13 Jun 2005 20:02:24 +0100 From: Christoph Hellwig <hch@infradead.org> To: Scott Long <scottl@samsco.org> Cc: Daniel Eischen <deischen@freebsd.org>, freebsd-hackers@freebsd.org, Julian Elischer <julian@elischer.org>, Apache Xie <apachexm@hotmail.com> Subject: Re: contigmalloc() and mmap() Message-ID: <20050613190224.GA4308@infradead.org> In-Reply-To: <42ADD6AC.3060505@samsco.org> References: <Pine.GSO.4.43.0506131332380.23852-100000@sea.ntplx.net> <42ADC762.6010801@elischer.org> <20050613181435.GA3096@infradead.org> <42ADD253.4020606@samsco.org> <20050613184551.GA3853@infradead.org> <42ADD6AC.3060505@samsco.org>
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On Mon, Jun 13, 2005 at 12:55:40PM -0600, Scott Long wrote: > >Lot's of driver use file->private to get at per-device data easily, > >but that's just a shortcut. > > Ok, I thought that you were talking about per-process data being in the > file descriptor. No, Linux has absolutely no concept of per-process data in driver, and if you think of it that would be rather bogus anyway (e.g. a driver opening the same device multiple times)
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