From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from fieldses.org ([174.143.236.118]:36016 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754960Ab2JPWBn (ORCPT ); Tue, 16 Oct 2012 18:01:43 -0400 From: "J. Bruce Fields" To: Al Viro Cc: linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, "J. Bruce Fields" Subject: [PATCH 03/12] vfs: rename I_MUTEX_QUOTA now that it's not used for quotas Date: Tue, 16 Oct 2012 18:01:28 -0400 Message-Id: <1350424897-26894-4-git-send-email-bfields@redhat.com> In-Reply-To: <1350424897-26894-1-git-send-email-bfields@redhat.com> References: <1350424897-26894-1-git-send-email-bfields@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: From: "J. Bruce Fields" I_MUTEX_QUOTA is now just being used whenever we want to lock two non-directories. So the name isn't right. I_MUTEX_NONDIR2 isn't especially elegant but it's the best I could think of. Also fix some outdated documentation. Signed-off-by: J. Bruce Fields --- fs/inode.c | 4 ++-- include/linux/fs.h | 9 ++++++--- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/fs/inode.c b/fs/inode.c index 413b043..2cffc18 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -977,10 +977,10 @@ void lock_two_nondirectories(struct inode *inode1, struct inode *inode2) { if (inode1 < inode2) { mutex_lock(&inode1->i_mutex); - mutex_lock_nested(&inode2->i_mutex, I_MUTEX_QUOTA); + mutex_lock_nested(&inode2->i_mutex, I_MUTEX_NONDIR2); } else { mutex_lock(&inode2->i_mutex); - mutex_lock_nested(&inode1->i_mutex, I_MUTEX_QUOTA); + mutex_lock_nested(&inode1->i_mutex, I_MUTEX_NONDIR2); } } EXPORT_SYMBOL(lock_two_nondirectories); diff --git a/include/linux/fs.h b/include/linux/fs.h index 83da035..7ffc865 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -554,10 +554,13 @@ static inline int inode_unhashed(struct inode *inode) * 0: the object of the current VFS operation * 1: parent * 2: child/target - * 3: quota file + * 3: xattr + * 4: second non-directory + * The last is for certain operations (such as rename) which lock two + * non-directories at once. * * The locking order between these classes is - * parent -> child -> normal -> xattr -> quota + * parent -> child -> normal -> xattr -> second non-directory */ enum inode_i_mutex_lock_class { @@ -565,7 +568,7 @@ enum inode_i_mutex_lock_class I_MUTEX_PARENT, I_MUTEX_CHILD, I_MUTEX_XATTR, - I_MUTEX_QUOTA + I_MUTEX_NONDIR2 }; void lock_two_nondirectories(struct inode *, struct inode*); -- 1.7.9.5