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[PATCH 21/25] do_rmdir(): elevate write count [message #16950 is a reply to message #16934]

Mon, 11 December 2006 22:30

Dave Hansen
Messages: 240
Registered: October 2005

Senior Member

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~20-24-do-rmdir-elevate-write-count fs/namei.c
--- lxc/fs/namei.c~20-24-do-rmdir-elevate-write-count	2006-12-11 14:22:10.000000000 -0800
+++ lxc-dave/fs/namei.c	2006-12-11 14:22:10.000000000 -0800
@@ -2097,7 +2097,12 @@ 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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[Message index]

		[PATCH 00/25] Mount writer count and read-only bind mounts (v7) By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 01/25] filesystem helpers for custom 'struct file's By: Dave Hansen on Mon, 11 December 2006 22:30
		Re: [PATCH 01/25] filesystem helpers for custom 'struct file's By: Christoph Hellwig on Tue, 12 December 2006 10:30
		[PATCH 02/25] introduce simple_set_mnt_no_get() helper for NFS By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 04/25] Add vfsmount writer count By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 06/25] kill open files traverse on remount ro By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 07/25] elevate writer count for chown and friends By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 08/25] elevate mnt writers for callers of vfs_mkdir() By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 09/25] elevate write count during entire ncp_ioctl() By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 11/25] elevate mount count for extended attributes By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 12/25] mount_is_safe(): add comment By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 14/25] elevate write count over calls to vfs_rename() By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 15/25] elevate write count files are open()ed By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 16/25] elevate writer count for do_sys_truncate() By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 18/25] elevate write count for do_sys_utime() and touch_atime() By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 19/25] sys_mknodat(): elevate write count for vfs_mknod/create() By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 20/25] elevate mnt writers for vfs_unlink() callers By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 21/25] do_rmdir(): elevate write count By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 23/25] elevate writer count for custom struct_file By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 24/25] honor r/w changes at do_remount() time By: Dave Hansen on Mon, 11 December 2006 22:30
		[PATCH 25/25] add kerneldoc for i_nlink helpers By: Dave Hansen on Mon, 11 December 2006 22:30

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