diff mbox series

[4.5/6] xfs: switch xfs_get_defquota to take explicit type

Message ID 0368b615-37af-27fb-b267-b7846f3b73d9@redhat.com (mailing list archive)
State Superseded, archived
Headers show
Series None | expand

Commit Message

Eric Sandeen May 20, 2020, 6:41 p.m. UTC
xfs_get_defquota() currently takes an xfs_dquot, and from that obtains
the type of default quota we should get (user/group/project).

But early in init, we don't have access to a fully set up quota, and
so we will fail to set these defaults.

Switch xfs_get_defquota to take an explicit type, and add a helper 
function to obtain that type from an xfs_dquot for the existing
callers.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---

Comments

Darrick J. Wong May 20, 2020, 8:36 p.m. UTC | #1
On Wed, May 20, 2020 at 01:41:25PM -0500, Eric Sandeen wrote:
> xfs_get_defquota() currently takes an xfs_dquot, and from that obtains
> the type of default quota we should get (user/group/project).
> 
> But early in init, we don't have access to a fully set up quota, and
> so we will fail to set these defaults.
> 
> Switch xfs_get_defquota to take an explicit type, and add a helper 
> function to obtain that type from an xfs_dquot for the existing
> callers.

Ah, so this patch isn't itself fixing anything, it's preparing code for
something that happens in the next patch.

> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> ---
> 
> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
> index 6d6afc0297b3..fdeaccc67d91 100644
> --- a/fs/xfs/xfs_dquot.c
> +++ b/fs/xfs/xfs_dquot.c
> @@ -75,7 +75,7 @@ xfs_qm_adjust_dqlimits(
>  	int			prealloc = 0;
>  
>  	ASSERT(d->d_id);
> -	defq = xfs_get_defquota(dq, q);
> +	defq = xfs_get_defquota(q, xfs_dquot_type(dq));
>  
>  	if (defq->bsoftlimit && !d->d_blk_softlimit) {
>  		d->d_blk_softlimit = cpu_to_be64(defq->bsoftlimit);
> diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
> index e97a3802939c..64ba943e0675 100644
> --- a/fs/xfs/xfs_qm.c
> +++ b/fs/xfs/xfs_qm.c
> @@ -558,7 +558,7 @@ xfs_qm_set_defquota(
>  		return;
>  
>  	ddqp = &dqp->q_core;
> -	defq = xfs_get_defquota(dqp, qinf);
> +	defq = xfs_get_defquota(qinf, xfs_dquot_type(dqp));
>  
>  	/*
>  	 * Timers and warnings have been already set, let's just set the
> diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
> index 3a850401b102..06df406fdf72 100644
> --- a/fs/xfs/xfs_qm.h
> +++ b/fs/xfs/xfs_qm.h
> @@ -113,6 +113,19 @@ xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
>  	return NULL;
>  }
>  
> +static inline int
> +xfs_dquot_type(struct xfs_dquot *dqp)
> +{
> +	if (XFS_QM_ISUDQ(dqp))
> +		return XFS_DQ_USER;
> +	else if (XFS_QM_ISGDQ(dqp))
> +		return XFS_DQ_GROUP;
> +	else {
> +		ASSERT(XFS_QM_ISPDQ(dqp));
> +		return XFS_DQ_PROJ;

/me suspects this could be tidier, e.g.

if (UDQ)
	return XFS_DQ_USER;
if (GDQ)
	return XFS_DQ_GROUP;
ASSERT(PDQ);
return XFS_DQ_PROJ;

Otherwise the rest looks ok.

--D


> +	}
> +}
> +
>  extern void	xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
>  				    uint field, int64_t delta);
>  extern void	xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
> @@ -164,17 +177,22 @@ extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
>  extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
>  
>  static inline struct xfs_def_quota *
> -xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
> +xfs_get_defquota(struct xfs_quotainfo *qi, int type)
>  {
>  	struct xfs_def_quota *defq;
>  
> -	if (XFS_QM_ISUDQ(dqp))
> +	switch (type) {
> +	case XFS_DQ_USER:
>  		defq = &qi->qi_usr_default;
> -	else if (XFS_QM_ISGDQ(dqp))
> +		break;
> +	case XFS_DQ_GROUP:
>  		defq = &qi->qi_grp_default;
> -	else {
> -		ASSERT(XFS_QM_ISPDQ(dqp));
> +		break;
> +	case XFS_DQ_PROJ:
>  		defq = &qi->qi_prj_default;
> +		break;
> +	default:
> +		ASSERT(0);
>  	}
>  	return defq;
>  }
> diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
> index 301a284ee4f9..13196d07c84e 100644
> --- a/fs/xfs/xfs_qm_syscalls.c
> +++ b/fs/xfs/xfs_qm_syscalls.c
> @@ -479,7 +479,7 @@ xfs_qm_scall_setqlim(
>  		goto out_unlock;
>  	}
>  
> -	defq = xfs_get_defquota(dqp, q);
> +	defq = xfs_get_defquota(q, xfs_dquot_type(dqp));
>  	xfs_dqunlock(dqp);
>  
>  	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_setqlim, 0, 0, 0, &tp);
> diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
> index 20542076e32a..edde366ca8e9 100644
> --- a/fs/xfs/xfs_trans_dquot.c
> +++ b/fs/xfs/xfs_trans_dquot.c
> @@ -591,7 +591,7 @@ xfs_trans_dqresv(
>  
>  	xfs_dqlock(dqp);
>  
> -	defq = xfs_get_defquota(dqp, q);
> +	defq = xfs_get_defquota(q, xfs_dquot_type(dqp));
>  
>  	if (flags & XFS_TRANS_DQ_RES_BLKS) {
>  		hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
>
Eric Sandeen May 20, 2020, 8:41 p.m. UTC | #2
On 5/20/20 3:36 PM, Darrick J. Wong wrote:
> On Wed, May 20, 2020 at 01:41:25PM -0500, Eric Sandeen wrote:
>> xfs_get_defquota() currently takes an xfs_dquot, and from that obtains
>> the type of default quota we should get (user/group/project).
>>
>> But early in init, we don't have access to a fully set up quota, and
>> so we will fail to set these defaults.
>>
>> Switch xfs_get_defquota to take an explicit type, and add a helper 
>> function to obtain that type from an xfs_dquot for the existing
>> callers.
> 
> Ah, so this patch isn't itself fixing anything, it's preparing code for
> something that happens in the next patch.

yeah sorry that could be clearer, "fix" on the brain, can edit commit log.

>> Signed-off-by: Eric Sandeen <sandeen@redhat.com>

...

>>  
>> +static inline int
>> +xfs_dquot_type(struct xfs_dquot *dqp)
>> +{
>> +	if (XFS_QM_ISUDQ(dqp))
>> +		return XFS_DQ_USER;
>> +	else if (XFS_QM_ISGDQ(dqp))
>> +		return XFS_DQ_GROUP;
>> +	else {
>> +		ASSERT(XFS_QM_ISPDQ(dqp));
>> +		return XFS_DQ_PROJ;
> 
> /me suspects this could be tidier, e.g.
> 
> if (UDQ)
> 	return XFS_DQ_USER;
> if (GDQ)
> 	return XFS_DQ_GROUP;
> ASSERT(PDQ);
> return XFS_DQ_PROJ;
> 
> Otherwise the rest looks ok.

I suppose, so respin or no?
Darrick J. Wong May 20, 2020, 8:49 p.m. UTC | #3
On Wed, May 20, 2020 at 03:41:03PM -0500, Eric Sandeen wrote:
> On 5/20/20 3:36 PM, Darrick J. Wong wrote:
> > On Wed, May 20, 2020 at 01:41:25PM -0500, Eric Sandeen wrote:
> >> xfs_get_defquota() currently takes an xfs_dquot, and from that obtains
> >> the type of default quota we should get (user/group/project).
> >>
> >> But early in init, we don't have access to a fully set up quota, and
> >> so we will fail to set these defaults.
> >>
> >> Switch xfs_get_defquota to take an explicit type, and add a helper 
> >> function to obtain that type from an xfs_dquot for the existing
> >> callers.
> > 
> > Ah, so this patch isn't itself fixing anything, it's preparing code for
> > something that happens in the next patch.
> 
> yeah sorry that could be clearer, "fix" on the brain, can edit commit log.

Sorry, stream of consciosuness on my part, nothing in this patch
actually said "fix".

> >> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> 
> ...
> 
> >>  
> >> +static inline int
> >> +xfs_dquot_type(struct xfs_dquot *dqp)
> >> +{
> >> +	if (XFS_QM_ISUDQ(dqp))
> >> +		return XFS_DQ_USER;
> >> +	else if (XFS_QM_ISGDQ(dqp))
> >> +		return XFS_DQ_GROUP;
> >> +	else {
> >> +		ASSERT(XFS_QM_ISPDQ(dqp));
> >> +		return XFS_DQ_PROJ;
> > 
> > /me suspects this could be tidier, e.g.
> > 
> > if (UDQ)
> > 	return XFS_DQ_USER;
> > if (GDQ)
> > 	return XFS_DQ_GROUP;
> > ASSERT(PDQ);
> > return XFS_DQ_PROJ;
> > 
> > Otherwise the rest looks ok.
> 
> I suppose, so respin or no?

I fixed up this patch and the next one in my test tree, let's see what
breaks.  I retested all the tests I whined about earlier and they're
fixed now except for generic/594 which might just be ... busted?  Or
maybe I forgot to send a patch...?

--D
diff mbox series

Patch

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 6d6afc0297b3..fdeaccc67d91 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -75,7 +75,7 @@  xfs_qm_adjust_dqlimits(
 	int			prealloc = 0;
 
 	ASSERT(d->d_id);
-	defq = xfs_get_defquota(dq, q);
+	defq = xfs_get_defquota(q, xfs_dquot_type(dq));
 
 	if (defq->bsoftlimit && !d->d_blk_softlimit) {
 		d->d_blk_softlimit = cpu_to_be64(defq->bsoftlimit);
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index e97a3802939c..64ba943e0675 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -558,7 +558,7 @@  xfs_qm_set_defquota(
 		return;
 
 	ddqp = &dqp->q_core;
-	defq = xfs_get_defquota(dqp, qinf);
+	defq = xfs_get_defquota(qinf, xfs_dquot_type(dqp));
 
 	/*
 	 * Timers and warnings have been already set, let's just set the
diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 3a850401b102..06df406fdf72 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -113,6 +113,19 @@  xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
 	return NULL;
 }
 
+static inline int
+xfs_dquot_type(struct xfs_dquot *dqp)
+{
+	if (XFS_QM_ISUDQ(dqp))
+		return XFS_DQ_USER;
+	else if (XFS_QM_ISGDQ(dqp))
+		return XFS_DQ_GROUP;
+	else {
+		ASSERT(XFS_QM_ISPDQ(dqp));
+		return XFS_DQ_PROJ;
+	}
+}
+
 extern void	xfs_trans_mod_dquot(struct xfs_trans *tp, struct xfs_dquot *dqp,
 				    uint field, int64_t delta);
 extern void	xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
@@ -164,17 +177,22 @@  extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
 extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
 
 static inline struct xfs_def_quota *
-xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
+xfs_get_defquota(struct xfs_quotainfo *qi, int type)
 {
 	struct xfs_def_quota *defq;
 
-	if (XFS_QM_ISUDQ(dqp))
+	switch (type) {
+	case XFS_DQ_USER:
 		defq = &qi->qi_usr_default;
-	else if (XFS_QM_ISGDQ(dqp))
+		break;
+	case XFS_DQ_GROUP:
 		defq = &qi->qi_grp_default;
-	else {
-		ASSERT(XFS_QM_ISPDQ(dqp));
+		break;
+	case XFS_DQ_PROJ:
 		defq = &qi->qi_prj_default;
+		break;
+	default:
+		ASSERT(0);
 	}
 	return defq;
 }
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 301a284ee4f9..13196d07c84e 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -479,7 +479,7 @@  xfs_qm_scall_setqlim(
 		goto out_unlock;
 	}
 
-	defq = xfs_get_defquota(dqp, q);
+	defq = xfs_get_defquota(q, xfs_dquot_type(dqp));
 	xfs_dqunlock(dqp);
 
 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_setqlim, 0, 0, 0, &tp);
diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index 20542076e32a..edde366ca8e9 100644
--- a/fs/xfs/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
@@ -591,7 +591,7 @@  xfs_trans_dqresv(
 
 	xfs_dqlock(dqp);
 
-	defq = xfs_get_defquota(dqp, q);
+	defq = xfs_get_defquota(q, xfs_dquot_type(dqp));
 
 	if (flags & XFS_TRANS_DQ_RES_BLKS) {
 		hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);