linux-kernel - [PATCH 1/1] [NFS/NOMMU]: fix bug - executing FDPIC ELF on NFS mount triggers BUG() at mm/nommu.c:862:/do_mmap

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Date:	Tue,  1 Apr 2008 20:23:39 -0700
From:	Bryan Wu <cooloney@...nel.org>
To:	Trond.Myklebust@...app.com, linux-nfs@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Bryan Wu <cooloney@...nel.org>,
	Mike Frysinger <vapier.adi@...il.com>
Subject: [PATCH 1/1] [NFS/NOMMU]: fix bug - executing FDPIC ELF on NFS mount triggers BUG() at mm/nommu.c:862:/do_mmap_private()

NFS needs a NOMMU version mmap function to support uClinux on NOMMU machine
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_id=141&tracker_item_id=3992

Signed-off-by: Bryan Wu <cooloney@...nel.org>
Cc: Mike Frysinger <vapier.adi@...il.com>
---
 fs/nfs/file.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index ef57a5a..5d2e9d9 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -64,7 +64,11 @@ const struct file_operations nfs_file_operations = {
 	.write		= do_sync_write,
 	.aio_read	= nfs_file_read,
 	.aio_write	= nfs_file_write,
+#ifdef CONFIG_MMU
 	.mmap		= nfs_file_mmap,
+#else
+	.mmap		= generic_file_mmap,
+#endif
 	.open		= nfs_file_open,
 	.flush		= nfs_file_flush,
 	.release	= nfs_file_release,
-- 
1.5.4.3
--
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