linux-ext4 - Re: [PATCH 4/4] ext4: fix incorrect block reservation on quota transfer.

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Message-id: <87zl5uvu4s.fsf@openvz.org>
Date:	Tue, 08 Dec 2009 09:48:19 +0300
From:	Dmitry Monakhov <dmonakhov@...nvz.org>
To:	Mingming <cmm@...ibm.com>
Cc:	linux-ext4@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: Re: [PATCH 4/4] ext4: fix incorrect block reservation on quota
 transfer.

Mingming <cmm@...ibm.com> writes:

> On Wed, 2009-11-25 at 09:57 +0300, Dmitry Monakhov wrote:
>> Inside ->setattr() call both ATTR_UID and ATTR_GID may be valid
>> This means that we may end-up with transferring all quotas. Add
>> we have to reserve QUOTA_DEL_BLOCKS for all quotas, as we do in
>> case of QUOTA_INIT_BLOCKS.
>> 
>> Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
>
> Seems correct to me. It looks like ext3 need similar fix, mind to send a
> ext3 patch as well?
Done.
>
> Reviewed-by: Mingming Cao <cmm@...ibm.com>
>> ---
>>  fs/ext4/inode.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>> 
>> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
>> index 211722b..d42e954 100644
>> --- a/fs/ext4/inode.c
>> +++ b/fs/ext4/inode.c
>> @@ -5439,7 +5439,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
>>  		/* (user+group)*(old+new) structure, inode write (sb,
>>  		 * inode block, ? - but truncate inode update has it) */
>>  		handle = ext4_journal_start(inode, (EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb)+
>> -					EXT4_QUOTA_DEL_BLOCKS(inode->i_sb))+3);
>> +					EXT4_MAXQUOTAS_DEL_BLOCKS(inode->i_sb))+3);
>>  		if (IS_ERR(handle)) {
>>  			error = PTR_ERR(handle);
>>  			goto err_out;
>
>
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