[RFC][PATCH 08/27] increment sb writer count when nlink hits zero

[Dave Hansen <haveblue@us.ibm.com>]

When a file is unlinked, there will soon be a write to the
filesystem.  Note this, and disallow remounts to r/o during
the time when this write is pending.

Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
---

 lxc-dave/fs/libfs.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN fs/libfs.c~C-inc-sb-writer-count-on-dec-nlink-to-zero fs/libfs.c
--- lxc/fs/libfs.c~C-inc-sb-writer-count-on-dec-nlink-to-zero	2006-07-12 11:09:23.000000000 -0700
+++ lxc-dave/fs/libfs.c	2006-07-12 11:09:25.000000000 -0700
@@ -276,6 +276,7 @@ void inode_drop_nlink(struct inode *inod
 	if (inode->i_nlink)
 		return;
 	inode->i_state |= I_WRITING_ON_SB;
+	atomic_inc(&inode->i_sb->s_mnt_writers);
 }
 
 int simple_unlink(struct inode *dir, struct dentry *dentry)
_
-
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