Messages in this thread |  | | Date | Tue, 6 Feb 2001 16:42:14 -0800 (PST) | | From | Linus Torvalds <> | | Subject | Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait |
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On Tue, 6 Feb 2001, Ingo Molnar wrote: > > On Wed, 7 Feb 2001, Stephen C. Tweedie wrote: > > > No, it is a problem of the ll_rw_block interface: buffer_heads need to > > be aligned on disk at a multiple of their buffer size. Under the Unix > > raw IO interface it is perfectly legal to begin a 128kB IO at offset > > 512 bytes into a device. > > then we should either fix this limitation, or the raw IO code should split > the request up into several, variable-size bhs, so that the range is > filled out optimally with aligned bhs.
As mentioned, no such limitation exists if you just use the right interfaces.
Linus
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