diff mbox series

[10/26] xfs: stop using q_core.d_flags in the quota code

Message ID 159477790082.3263162.2486913704651505901.stgit@magnolia (mailing list archive)
State Accepted
Headers show
Series xfs: remove xfs_disk_quot from incore dquot | expand

Commit Message

Darrick J. Wong July 15, 2020, 1:51 a.m. UTC 
From: Darrick J. Wong <darrick.wong@oracle.com>

Use the incore dq_flags to figure out the dquot type.  This is the first
step towards removing xfs_disk_dquot from the incore dquot.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_dquot.c      |   34 ++++++++++++++++++++++++++++++++--
 fs/xfs/xfs_dquot.h      |    2 ++
 fs/xfs/xfs_dquot_item.c |    6 ++++--
 3 files changed, 38 insertions(+), 4 deletions(-)

Comments

Chandan Babu R July 20, 2020, 5:37 a.m. UTC | #1 
On Wednesday 15 July 2020 7:21:40 AM IST Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> Use the incore dq_flags to figure out the dquot type.  This is the first
> step towards removing xfs_disk_dquot from the incore dquot.
>

The changes look good to me.

Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>

> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> ---
>  fs/xfs/xfs_dquot.c      |   34 ++++++++++++++++++++++++++++++++--
>  fs/xfs/xfs_dquot.h      |    2 ++
>  fs/xfs/xfs_dquot_item.c |    6 ++++--
>  3 files changed, 38 insertions(+), 4 deletions(-)
> 
> 
> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
> index 6fcea0d3989e..93b5b7277cb8 100644
> --- a/fs/xfs/xfs_dquot.c
> +++ b/fs/xfs/xfs_dquot.c
> @@ -568,6 +568,15 @@ xfs_dquot_from_disk(
>  	return 0;
>  }
>  
> +/* Copy the in-core quota fields into the on-disk buffer. */
> +void
> +xfs_dquot_to_disk(
> +	struct xfs_disk_dquot	*ddqp,
> +	struct xfs_dquot	*dqp)
> +{
> +	memcpy(ddqp, &dqp->q_core, sizeof(struct xfs_disk_dquot));
> +}
> +
>  /* Allocate and initialize the dquot buffer for this in-core dquot. */
>  static int
>  xfs_qm_dqread_alloc(
> @@ -1122,6 +1131,19 @@ xfs_dquot_done(
>  	}
>  }
>  
> +/* Check incore dquot for errors before we flush. */
> +static xfs_failaddr_t
> +xfs_qm_dqflush_check(
> +	struct xfs_dquot	*dqp)
> +{
> +	if (dqp->q_type != XFS_DQTYPE_USER &&
> +	    dqp->q_type != XFS_DQTYPE_GROUP &&
> +	    dqp->q_type != XFS_DQTYPE_PROJ)
> +		return __this_address;
> +
> +	return NULL;
> +}
> +
>  /*
>   * Write a modified dquot to disk.
>   * The dquot must be locked and the flush lock too taken by caller.
> @@ -1180,8 +1202,16 @@ xfs_qm_dqflush(
>  		goto out_abort;
>  	}
>  
> -	/* This is the only portion of data that needs to persist */
> -	memcpy(ddqp, &dqp->q_core, sizeof(struct xfs_disk_dquot));
> +	fa = xfs_qm_dqflush_check(dqp);
> +	if (fa) {
> +		xfs_alert(mp, "corrupt dquot ID 0x%x in memory at %pS",
> +				be32_to_cpu(dqp->q_core.d_id), fa);
> +		xfs_buf_relse(bp);
> +		error = -EFSCORRUPTED;
> +		goto out_abort;
> +	}
> +
> +	xfs_dquot_to_disk(ddqp, dqp);
>  
>  	/*
>  	 * Clear the dirty field and remember the flush lsn for later use.
> diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
> index 7f3f734bced8..84399d1d8188 100644
> --- a/fs/xfs/xfs_dquot.h
> +++ b/fs/xfs/xfs_dquot.h
> @@ -151,6 +151,8 @@ static inline bool xfs_dquot_lowsp(struct xfs_dquot *dqp)
>  	return false;
>  }
>  
> +void xfs_dquot_to_disk(struct xfs_disk_dquot *ddqp, struct xfs_dquot *dqp);
> +
>  #define XFS_DQ_IS_LOCKED(dqp)	(mutex_is_locked(&((dqp)->q_qlock)))
>  #define XFS_DQ_IS_DIRTY(dqp)	((dqp)->q_flags & XFS_DQFLAG_DIRTY)
>  #define XFS_QM_ISUDQ(dqp)	((dqp)->q_type == XFS_DQTYPE_USER)
> diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c
> index d7e4de7151d7..fc21e48c889c 100644
> --- a/fs/xfs/xfs_dquot_item.c
> +++ b/fs/xfs/xfs_dquot_item.c
> @@ -45,6 +45,7 @@ xfs_qm_dquot_logitem_format(
>  	struct xfs_log_item	*lip,
>  	struct xfs_log_vec	*lv)
>  {
> +	struct xfs_disk_dquot	ddq;
>  	struct xfs_dq_logitem	*qlip = DQUOT_ITEM(lip);
>  	struct xfs_log_iovec	*vecp = NULL;
>  	struct xfs_dq_logformat	*qlf;
> @@ -58,8 +59,9 @@ xfs_qm_dquot_logitem_format(
>  	qlf->qlf_boffset = qlip->qli_dquot->q_bufoffset;
>  	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_dq_logformat));
>  
> -	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT,
> -			&qlip->qli_dquot->q_core,
> +	xfs_dquot_to_disk(&ddq, qlip->qli_dquot);
> +
> +	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT, &ddq,
>  			sizeof(struct xfs_disk_dquot));
>  }
>  
> 
>
diff mbox series

Patch

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 6fcea0d3989e..93b5b7277cb8 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -568,6 +568,15 @@  xfs_dquot_from_disk(
 	return 0;
 }
 
+/* Copy the in-core quota fields into the on-disk buffer. */
+void
+xfs_dquot_to_disk(
+	struct xfs_disk_dquot	*ddqp,
+	struct xfs_dquot	*dqp)
+{
+	memcpy(ddqp, &dqp->q_core, sizeof(struct xfs_disk_dquot));
+}
+
 /* Allocate and initialize the dquot buffer for this in-core dquot. */
 static int
 xfs_qm_dqread_alloc(
@@ -1122,6 +1131,19 @@  xfs_dquot_done(
 	}
 }
 
+/* Check incore dquot for errors before we flush. */
+static xfs_failaddr_t
+xfs_qm_dqflush_check(
+	struct xfs_dquot	*dqp)
+{
+	if (dqp->q_type != XFS_DQTYPE_USER &&
+	    dqp->q_type != XFS_DQTYPE_GROUP &&
+	    dqp->q_type != XFS_DQTYPE_PROJ)
+		return __this_address;
+
+	return NULL;
+}
+
 /*
  * Write a modified dquot to disk.
  * The dquot must be locked and the flush lock too taken by caller.
@@ -1180,8 +1202,16 @@  xfs_qm_dqflush(
 		goto out_abort;
 	}
 
-	/* This is the only portion of data that needs to persist */
-	memcpy(ddqp, &dqp->q_core, sizeof(struct xfs_disk_dquot));
+	fa = xfs_qm_dqflush_check(dqp);
+	if (fa) {
+		xfs_alert(mp, "corrupt dquot ID 0x%x in memory at %pS",
+				be32_to_cpu(dqp->q_core.d_id), fa);
+		xfs_buf_relse(bp);
+		error = -EFSCORRUPTED;
+		goto out_abort;
+	}
+
+	xfs_dquot_to_disk(ddqp, dqp);
 
 	/*
 	 * Clear the dirty field and remember the flush lsn for later use.
diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
index 7f3f734bced8..84399d1d8188 100644
--- a/fs/xfs/xfs_dquot.h
+++ b/fs/xfs/xfs_dquot.h
@@ -151,6 +151,8 @@  static inline bool xfs_dquot_lowsp(struct xfs_dquot *dqp)
 	return false;
 }
 
+void xfs_dquot_to_disk(struct xfs_disk_dquot *ddqp, struct xfs_dquot *dqp);
+
 #define XFS_DQ_IS_LOCKED(dqp)	(mutex_is_locked(&((dqp)->q_qlock)))
 #define XFS_DQ_IS_DIRTY(dqp)	((dqp)->q_flags & XFS_DQFLAG_DIRTY)
 #define XFS_QM_ISUDQ(dqp)	((dqp)->q_type == XFS_DQTYPE_USER)
diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c
index d7e4de7151d7..fc21e48c889c 100644
--- a/fs/xfs/xfs_dquot_item.c
+++ b/fs/xfs/xfs_dquot_item.c
@@ -45,6 +45,7 @@  xfs_qm_dquot_logitem_format(
 	struct xfs_log_item	*lip,
 	struct xfs_log_vec	*lv)
 {
+	struct xfs_disk_dquot	ddq;
 	struct xfs_dq_logitem	*qlip = DQUOT_ITEM(lip);
 	struct xfs_log_iovec	*vecp = NULL;
 	struct xfs_dq_logformat	*qlf;
@@ -58,8 +59,9 @@  xfs_qm_dquot_logitem_format(
 	qlf->qlf_boffset = qlip->qli_dquot->q_bufoffset;
 	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_dq_logformat));
 
-	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT,
-			&qlip->qli_dquot->q_core,
+	xfs_dquot_to_disk(&ddq, qlip->qli_dquot);
+
+	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT, &ddq,
 			sizeof(struct xfs_disk_dquot));
 }