From: NeilBrown <neilb@suse.de>
Date: Wed, 4 Oct 2006 09:16:15 +0000 (-0700)
Subject: [PATCH] knfsd: fix auto-sizing of nfsd request/reply buffers
X-Git-Tag: v2.6.19-rc1~100
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=44c556000a31e8079cfbb9a42a7edb93ca6b589a;p=~shefty%2Frdma-dev.git

[PATCH] knfsd: fix auto-sizing of nfsd request/reply buffers

totalram is measured in pages, not bytes, so PAGE_SHIFT must be used when
trying to find 1/4096 of RAM.

Cc:  "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 0603baad542..6fa6340a5fb 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -209,7 +209,7 @@ int nfsd_create_serv(void)
 		 * Of course, this is only a default.
 		 */
 		nfsd_max_blksize = NFSSVC_MAXBLKSIZE;
-		i.totalram >>= 12;
+		i.totalram <<= PAGE_SHIFT - 12;
 		while (nfsd_max_blksize > i.totalram &&
 		       nfsd_max_blksize >= 8*1024*2)
 			nfsd_max_blksize /= 2;