Messages in this thread | | | Date | Tue, 12 Aug 2003 04:56:10 +0200 | From | Andries Brouwer <> | Subject | Re: [PATCH] 2 of 2 - Allow O_EXCL on a block device to claim exclusive use. |
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On Tue, Aug 12, 2003 at 11:48:28AM +1000, Neil Brown wrote:
> My first attempt at this did claim before openning. > However that didn't work. > Some aspects of the bdev that are needed for claiming are not > initialised before it is first opened. In particular, bd_contains, > gets set up by do_open.
Size and structure of partitions are entirely independent of whether someone has opened them. Thus, the corresponding bookkeeping must not be in struct block_device, which exists only when the device is open, but in struct gendisk or so (and only there).
It is a design mistake to have such stuff in struct block device.
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