Re: [PATCH v3] mdadm/r5cache: allow adding journal to array without journal

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On Mar 28, 2017, at 10:52 AM, jes.sorensen@xxxxxxxxx wrote:
> 
> Song Liu <songliubraving@xxxxxx> writes:
>> Currently, --add-journal can be only used to recreate broken journal
>> for arrays with journal since  creation. As the kernel code getting
>> more mature, this constraint is no longer necessary.
>> 
>> This patch allows --add-journal to add journal to array without
>> journal.
>> 
>> Signed-off-by: Song Liu <songliubraving@xxxxxx>
>> ---
>> Manage.c   | 9 ---------
>> mdadm.8.in | 5 ++---
>> 2 files changed, 2 insertions(+), 12 deletions(-)
>> 
>> diff --git a/Manage.c b/Manage.c
>> index 5c3d2b9..d038b68 100644
>> --- a/Manage.c
>> +++ b/Manage.c
>> @@ -946,7 +946,6 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
>> 
>> 	/* only add journal to array that supports journaling */
>> 	if (dv->disposition == 'j') {
>> -		struct mdinfo mdi;
>> 		struct mdinfo *mdp;
>> 
>> 		mdp = sysfs_read(fd, NULL, GET_ARRAY_STATE);
>> @@ -960,14 +959,6 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
>> 			pr_err("%s is not readonly, cannot add journal.\n", devname);
>> 			return -1;
>> 		}
>> -
>> -		sysfs_free(mdp);
>> -
> 
> Song,
> 
> Sorry for nagging you again on this one, however removing
> sysfs_free(mdp) means you are leaking mbp here.
> 
> Cheers,
> Jes

Oops... new patch coming...

Thanks,
Song
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