Anton Altaparmakov wrote:
On Mon, 29 Jan 2007, Mark Fasheh wrote:
No page lock please. Generally, Ocfs2 wants to order cluster locks outside
of page locks. Also, the sparse b-tree support I'm working on right now will
need to be able to allocate in ->page_mkwrite() which would become very
nasty if we came in with the page lock - aside from the additional cluster
locks taken, ocfs2 will want to zero some adjacent pages (because we support
atomic allocation up to 1 meg).
Ditto for NTFS. I will need to lock pages on both sides of the page for
large volume cluster sizes thus I will have to drop the page lock if it is
already taken so it might as well not be... Although I do not feel
strongly about it. If the page is locked I will just drop the lock and
then take it again. If possible to not have the page locked that would
make my code a little easier/more efficient I expect...
OK, that makes sense. Thanks to you both.
--
SUSE Labs, Novell Inc.
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