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[PATCH 23/23] do_rmdir(): elevate write count

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From: Dave Hansen <haveblue@...>
To: <linux-kernel@...>
Cc: <linux-fsdevel@...>, <viro@...>, <hch@...>, Dave Hansen <haveblue@...>
Subject: [PATCH 23/23] do_rmdir(): elevate write count
Date: Wednesday, July 11, 2007 - 8:17 pm

Elevate the write count during the vfs_rmdir() call.

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

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

diff -puN fs/namei.c~do-rmdir-elevate-write-count fs/namei.c
--- lxc/fs/namei.c~do-rmdir-elevate-write-count	2007-07-10 12:46:16.000000000 -0700
+++ lxc-dave/fs/namei.c	2007-07-10 12:46:16.000000000 -0700
@@ -2115,7 +2115,12 @@ 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);
_
-
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Messages in current thread:
[PATCH 00/23] Mount writer count API (read-only bind mounts ..., Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 06/23] r/o bind mounts: elevate write count for some ..., Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 05/23] elevate write count open()'d files, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 03/23] filesystem helpers for custom 'struct file's, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 07/23] elevate writer count for chown and friends, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 20/23] elevate write count for do_sys_utime() and tou..., Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 17/23] nfs: check mnt instead of superblock directly, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 18/23] elevate writer count for do_sys_truncate(), Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 10/23] elevate write count during entire ncp_ioctl(), Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 23/23] do_rmdir(): elevate write count, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 22/23] elevate mnt writers for vfs_unlink() callers, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 08/23] make access() use mnt check, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 16/23] elevate write count over calls to vfs_rename(), Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 21/23] sys_mknodat(): elevate write count for vfs_mkn..., Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 15/23] unix_find_other() elevate write count for touc..., Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 19/23] elevate write count for do_utimes(), Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 14/23] mount_is_safe(): add comment, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 13/23] elevate write count for file_update_time(), Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 11/23] elevate write count for link and symlink calls, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 02/23] create cleanup helper svc_msnfs(), Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 04/23] r/o bind mounts: stub functions, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 12/23] elevate mount count for extended attributes, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 01/23] rearrange may_open() to be r/o friendly, Dave Hansen, (Wed Jul 11, 8:17 pm)
[PATCH 09/23] elevate mnt writers for callers of vfs_mkdir(), Dave Hansen, (Wed Jul 11, 8:17 pm)