Messages in this thread | | | Date | Thu, 12 Jun 2008 13:50:14 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH -mm 14/24] Ramfs and Ram Disk pages are unevictable |
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On Fri, 13 Jun 2008 03:37:56 +1000 Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> > > This isn't the case for brd any longer. It doesn't use the buffer > > > cache as its backing store, so the buffer cache is reclaimable.
> > I know that pages of files that got paged into the page > > cache from the ramdisk can be evicted (back to the ram > > disk), but how do the brd pages themselves behave? > > They are not reclaimable. But they have nothing (directly) to do > with brd's i_mapping address space, nor are they put on any LRU > lists.
Ahhhh, doh!
I'm mailing Andrew a patch right now that undoes the brd.c part of patch 14/24. The ramdisk part is correct and should stay (afaict).
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