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Re: [dm-devel] [PATCH] rm alloc_page from dm-emc take 2



Mike Christie wrote:
I am not sure if the first mail got sent out. Here is
the correct mail with the patch.

Hey Lars,

Here is what I meant. A Page for just something around 8-16 bytes
seems wasteful. Plus there is no reserve.

If you have to end up setting more bits maybe it is better to
preallocate a command per device at create time, or maybe since
there are four different combos I should have done it with this
patch?

This was made against 2.6.12-rc2. Only compile tested.

Mike





+	if (bio_add_page(bio, virt_to_page(data), data_size,
+			 offset_in_page(data)) != data_size) {

My concern though is that I do no think I can do this. I mean we cannot start the IO from the middle of a page.



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