On 02/14/2014 01:46 PM, Guangliang Zhao wrote:
> On Tue, Feb 11, 2014 at 01:30:11PM +0800, Yan Zheng wrote:
> 
> This looks good, but there maybe some hiccups, see below.
> 
> The symlink also need ceph_init_acl() as Alex mentioned, I have
> add it in the patch.

will update my patch. 

> 
>> Signed-off-by: Yan, Zheng <[email protected]>
>> ---
>>  fs/ceph/dir.c  | 9 +++++----
>>  fs/ceph/file.c | 1 +
>>  2 files changed, 6 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
>> index 6da4df8..3bbd0eb 100644
>> --- a/fs/ceph/dir.c
>> +++ b/fs/ceph/dir.c
>> @@ -695,9 +695,8 @@ static int ceph_mknod(struct inode *dir, struct dentry 
>> *dentry,
>>      ceph_mdsc_put_request(req);
>>  
>>      if (!err)
>> -            err = ceph_init_acl(dentry, dentry->d_inode, dir);
>> -
>> -    if (err)
>> +            ceph_init_acl(dentry, dentry->d_inode, dir);
>> +    else
>>              d_drop(dentry);
> 
> ceph_init_acl() may fail, we shoud take care of the return value.

I remove the error handling intentionally because creating inode and 
initializing
ACL are not atomic in current implementation. A better approach is initializing 
the
ACL on the metadata server, but it requires more works.

Regards
Yan, Zheng

> 
>>      return err;
>>  }
>> @@ -776,7 +775,9 @@ static int ceph_mkdir(struct inode *dir, struct dentry 
>> *dentry, umode_t mode)
>>              err = ceph_handle_notrace_create(dir, dentry);
>>      ceph_mdsc_put_request(req);
>>  out:
>> -    if (err < 0)
>> +    if (!err)
>> +            ceph_init_acl(dentry, dentry->d_inode, dir);
>> +    else
>>              d_drop(dentry);
>>      return err;
>>  }
>> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
>> index dfd2ce3..09c7afe 100644
>> --- a/fs/ceph/file.c
>> +++ b/fs/ceph/file.c
>> @@ -286,6 +286,7 @@ int ceph_atomic_open(struct inode *dir, struct dentry 
>> *dentry,
>>      } else {
>>              dout("atomic_open finish_open on dn %p\n", dn);
>>              if (req->r_op == CEPH_MDS_OP_CREATE && 
>> req->r_reply_info.has_create_ino) {
>> +                    ceph_init_acl(dentry, dentry->d_inode, dir);
> 
> Same to above.
> 
>>                      *opened |= FILE_CREATED;
>>              }
>>              err = finish_open(file, dentry, ceph_open, opened);
>> -- 
>> 1.8.5.3
>>
>> --
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