[Ocfs2-devel] Tiny patch for cached ACLs support

[jeff.liu <jeff.liu@oracle.com>]

Hi Tristan,

Thanks for you info, I'll definitely try it tonight.

Regards,
-Jeff

Tristan Ye wrote:
> jeff.liu wrote:
>> Hello,
>>
>> Below is a tiny patch for adding cached ACLs support to OCFS2, I have run a few simple tests like
>> getacl/setacl/chacl on my single node OCFS2, it works for me.
> 
> Hi Jeff,
> 	Take a look at http://oss.oracle.com/git/ocfs2-test.git/programs/acl_tests,
> there is a somewhat comprehensive testing script in existence for posix_acl,
> maybe it can be a bit overkilling for your patch, but please just take it as a
> double-checker if you wish;-)
> 
> 
> 
>> Any comments and testing are appreciated.
>>
>> Thanks,
>> -Jeff
>>
>>
>> Signed-off-by: Jeff Liu <jeff.liu@oracle.com>
>> ---
>>  fs/ocfs2/acl.c   |   12 +++++++++++-
>>  fs/ocfs2/inode.c |    4 ++++
>>  2 files changed, 15 insertions(+), 1 deletions(-)
>>
>> diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
>> index 704f6b1..13c58b0 100644
>> --- a/fs/ocfs2/acl.c
>> +++ b/fs/ocfs2/acl.c
>> @@ -152,6 +152,10 @@ static struct posix_acl *ocfs2_get_acl(struct inode *inode, int type)
>>  	if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
>>  		return NULL;
>>
>> +	acl = get_cached_acl(inode, type);
>> +	if (acl != ACL_NOT_CACHED)
>> +		return acl;
>> +
>>  	ret = ocfs2_inode_lock(inode, &di_bh, 0);
>>  	if (ret < 0) {
>>  		mlog_errno(ret);
>> @@ -286,6 +290,9 @@ static int ocfs2_set_acl(handle_t *handle,
>>  	else
>>  		ret = ocfs2_xattr_set(inode, name_index, "", value, size, 0);
>>
>> +	if (!ret)
>> +		set_cached_acl(inode, type, acl);
>> +
>>  	kfree(value);
>>
>>  	return ret;
>> @@ -348,9 +355,12 @@ int ocfs2_acl_chmod(struct inode *inode)
>>  	if (!clone)
>>  		return -ENOMEM;
>>  	ret = posix_acl_chmod_masq(clone, inode->i_mode);
>> -	if (!ret)
>> +	if (!ret) {
>>  		ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS,
>>  				    clone, NULL, NULL);
>> +		set_cached_acl(inode, ACL_TYPE_ACCESS, clone);
>> +	}
>> +
>>  	posix_acl_release(clone);
>>  	return ret;
>>  }
>> diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
>> index 4068c6c..80deac8 100644
>> --- a/fs/ocfs2/inode.c
>> +++ b/fs/ocfs2/inode.c
>> @@ -28,6 +28,7 @@
>>  #include <linux/highmem.h>
>>  #include <linux/pagemap.h>
>>  #include <linux/quotaops.h>
>> +#include <linux/posix_acl.h>
>>
>>  #include <asm/byteorder.h>
>>
>> @@ -783,6 +784,9 @@ static int ocfs2_wipe_inode(struct inode *inode,
>>  		goto bail_unlock_dir;
>>  	}
>>
>> +	if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)
>> +		forget_all_cached_acls(inode);
>> +
>>  	status = ocfs2_remove_refcount_tree(inode, di_bh);
>>  	if (status < 0) {
>>  		mlog_errno(status);
>