[PATCH 2/2] nfsd: fix default iosize calculation on 32bit

["J. Bruce Fields" <bfields@redhat.com>]

From: "J. Bruce Fields" <bfields@redhat.com>

The rpc buffers will be allocated out of low memory, so we should really
only be taking that into account.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfssvc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 2ad5ffe..53c89f7 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -314,7 +314,7 @@ static int nfsd_get_default_max_blksize(void)
 	unsigned long bytes;
 
 	si_meminfo(&i);
-	target = i.totalram << PAGE_SHIFT;
+	target = (i.totalram - i.totalhigh) << PAGE_SHIFT;
 	/*
 	 * Aim for 1/4096 of memory per thread This gives 1MB on 4Gig
 	 * machines, but only uses 32K on 128M machines.  Bottom out at
-- 
1.7.5.4