[PATCH 07/27] r-o-bind-mounts-do_rmdir-elevate-write-count

Dave Hansen
2007-11-01T23:12:16Z

Elevate the write count during the vfs_rmdir() call.

Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
---

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

diff -puN fs/namei.c~r-o-bind-mounts-do_rmdir-elevate-write-count fs/namei.c
--- linux-2.6.git/fs/namei.c~r-o-bind-mounts-do_rmdir-elevate-write-count 2007-11-01 14:46:09.000000000 -0700
+++ linux-2.6.git-dave/fs/namei.c 2007-11-01 14:46:09.000000000 -0700
@@ -2174,7 +2174,12 @@ static long do_rmdir(int dfd, const char
error = PTR_ERR(dentry);
if (IS_ERR(dentry))
goto exit2;
+ error = mnt_want_write(nd.mnt);
+ if (error)
+ goto exit3;
error = vfs_rmdir(nd.dentry->d_inode, dentry);
+ mnt_drop_write(nd.mnt);
+exit3:
dput(dentry);
exit2:
mutex_unlock(&nd.dentry->d_inode->i_mutex);
_