Messages in this thread | | | Date | Thu, 17 Jun 2010 02:16:47 -0400 | From | Christoph Hellwig <> | Subject | Re: [PATCH 12/12] vmscan: Do not writeback pages in direct reclaim |
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On Thu, Jun 17, 2010 at 09:25:38AM +0900, KAMEZAWA Hiroyuki wrote: > > BTW, why xbf_buf_create() use GFP_KERNEL even if it can be blocked ? > memory cgroup just limits pages for users, then, doesn't intend to > limit kernel pages.
You mean xfs_buf_allocate? It doesn't in the end. It goes through the xfs_kmem helper which clear __GFP_FS if we're currently inside a filesystem transaction (PF_FSTRANS is set) or a caller specificly requested it to be disabled even without that by passig the XBF_DONT_BLOCK flag.
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