On Mon, 2007-02-12 at 23:39 -0800, Trond Myklebust wrote:
> commit 7c85d9007d05436e71d2b805b96c1e36a8193bd4
> Author: Trond Myklebust <[email protected]>
> Date: Wed Dec 13 15:23:48 2006 -0500
>
> NFS: Fixup some outdated comments...
>
> Signed-off-by: Trond Myklebust <[email protected]>
A few new comments would be appreciated :-)
> commit 02241bc47e8961768de83d855accd0dcad1df045
> Author: Trond Myklebust <[email protected]>
> Date: Sat Jan 13 02:28:07 2007 -0500
>
> NFS: Ensure that ->writepage() uses flush_stable() when reclaiming pages
>
> Signed-off-by: Trond Myklebust <[email protected]>
That patch seems to make all ->writepage() calls use stable storage.
Of course, given that there are no other ->writepage() calls this
works out.
I've been using this:
---
Subject: nfs: only use stable storage for swap
unstable writes don't make sense for swap pages.
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Trond Myklebust <[email protected]>
---
fs/nfs/write.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6-git/fs/nfs/write.c
===================================================================
--- linux-2.6-git.orig/fs/nfs/write.c 2007-01-09 11:38:25.000000000 +0100
+++ linux-2.6-git/fs/nfs/write.c 2007-01-09 13:40:34.000000000 +0100
@@ -231,7 +231,7 @@ static int nfs_writepage_setup(struct nf
static int wb_priority(struct writeback_control *wbc)
{
if (wbc->for_reclaim)
- return FLUSH_HIGHPRI;
+ return FLUSH_HIGHPRI|FLUSH_STABLE;
if (wbc->for_kupdate)
return FLUSH_LOWPRI;
return 0;
-
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