Messages in this thread |  | | From | Daniel Phillips <> | Subject | Re: invalidate_inode_pages in 2.5.32/3 | Date | Fri, 13 Sep 2002 01:53:08 +0200 |
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On Friday 13 September 2002 01:23, Rik van Riel wrote: > On Thu, 12 Sep 2002, Andrew Morton wrote: > > Rik van Riel wrote: > > > > invalidate_page(struct page * page) { > > > That's the bottom-up approach. The top-down (vmtruncate) approach > > would also work, if the locking is suitable. > > The top-down approach will almost certainly be most efficient when > invalidating a large chunk of a file (truncate, large file locks) > while the bottom-up approach is probably more efficient when the > system invalidates very few pages (small file lock, cluster file > system mmap() support).
The bottom-up approach is the one we want to use when we'd otherwise skip a page in invalidate_inode_pages. This is the rare case. On the face of it, this works out very well. Just have to think about interactions now - I don't see any, but I haven't really gone hunting yet.
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