[PATCH 10/28] increment sb writer count when nlink hits zero

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 <[email protected]>
---

 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	2006-08-01 16:35:20.000000000 -0700
+++ lxc-dave/fs/libfs.c	2006-08-01 16:35:21.000000000 -0700
@@ -273,6 +273,7 @@ out:
 void __inode_set_awaiting_final_iput(struct inode *inode)
 {
 	inode->i_state |= I_AWAITING_FINAL_IPUT;
+	atomic_inc(&inode->i_sb->s_mnt_writers);
 }
 
 int simple_unlink(struct inode *dir, struct dentry *dentry)
_
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---

• References:
  • [PATCH 00/28] Mount writer count and read-only bind mounts (v5)
    • From: Dave Hansen <[email protected]>

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