[RFC][PATCH 17/30] r/o bind mounts: write count for file_update_time()

[Dave Hansen]

Signed-off-by: Dave Hansen <haveblue@xxxxxxxxxx>
---

 linux-2.6.git-dave/fs/inode.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff -puN fs/inode.c~r-o-bind-mounts-elevate-write-count-for-file_update_time fs/inode.c
--- linux-2.6.git/fs/inode.c~r-o-bind-mounts-elevate-write-count-for-file_update_time	2008-02-08 13:04:53.000000000 -0800
+++ linux-2.6.git-dave/fs/inode.c	2008-02-08 13:04:53.000000000 -0800
@@ -1250,10 +1250,13 @@ void file_update_time(struct file *file)
 	struct inode *inode = file->f_path.dentry->d_inode;
 	struct timespec now;
 	int sync_it = 0;
+	int err;
 
 	if (IS_NOCMTIME(inode))
 		return;
-	if (IS_RDONLY(inode))
+
+	err = mnt_want_write(file->f_vfsmnt);
+	if (err)
 		return;
 
 	now = current_fs_time(inode->i_sb);
@@ -1274,6 +1277,7 @@ void file_update_time(struct file *file)
 
 	if (sync_it)
 		mark_inode_dirty_sync(inode);
+	mnt_drop_write(file->f_vfsmnt);
 }
 
 EXPORT_SYMBOL(file_update_time);
_
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