diff mbox

[3/5] xfs: repair full xfs_dqblk during quotacheck

Message ID b4796b08-5a1b-c541-395e-3450aecae29b@sandeen.net (mailing list archive)
State Accepted
Headers show

Commit Message

Eric Sandeen May 4, 2018, 5:34 p.m. UTC
It's a bit dicey to pass in the smaller xfs_disk_dquot and then cast it to
something larger; pass in the full xfs_dqblk so we know the caller has sent
us the right thing.  Rename the function to xfs_dqblk_repair for
clarity.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---
 fs/xfs/libxfs/xfs_dquot_buf.c  | 21 +++++++++------------
 fs/xfs/libxfs/xfs_quota_defs.h |  2 +-
 fs/xfs/xfs_qm.c                |  2 +-
 3 files changed, 11 insertions(+), 14 deletions(-)

Comments

Darrick J. Wong May 4, 2018, 10:09 p.m. UTC | #1
On Fri, May 04, 2018 at 12:34:49PM -0500, Eric Sandeen wrote:
> It's a bit dicey to pass in the smaller xfs_disk_dquot and then cast it to
> something larger; pass in the full xfs_dqblk so we know the caller has sent
> us the right thing.  Rename the function to xfs_dqblk_repair for
> clarity.
> 
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>

Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/libxfs/xfs_dquot_buf.c  | 21 +++++++++------------
>  fs/xfs/libxfs/xfs_quota_defs.h |  2 +-
>  fs/xfs/xfs_qm.c                |  2 +-
>  3 files changed, 11 insertions(+), 14 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
> index c00174f32f0d..3b92427883fa 100644
> --- a/fs/xfs/libxfs/xfs_dquot_buf.c
> +++ b/fs/xfs/libxfs/xfs_dquot_buf.c
> @@ -104,29 +104,26 @@ xfs_dquot_verify(
>   * Do some primitive error checking on ondisk dquot data structures.
>   */
>  int
> -xfs_dquot_repair(
> +xfs_dqblk_repair(
>  	struct xfs_mount	*mp,
> -	struct xfs_disk_dquot	*ddq,
> +	struct xfs_dqblk	*dqb,
>  	xfs_dqid_t		id,
>  	uint			type)
>  {
> -	struct xfs_dqblk	*d = (struct xfs_dqblk *)ddq;
> -
> -
>  	/*
>  	 * Typically, a repair is only requested by quotacheck.
>  	 */
>  	ASSERT(id != -1);
> -	memset(d, 0, sizeof(xfs_dqblk_t));
> +	memset(dqb, 0, sizeof(xfs_dqblk_t));
>  
> -	d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC);
> -	d->dd_diskdq.d_version = XFS_DQUOT_VERSION;
> -	d->dd_diskdq.d_flags = type;
> -	d->dd_diskdq.d_id = cpu_to_be32(id);
> +	dqb->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC);
> +	dqb->dd_diskdq.d_version = XFS_DQUOT_VERSION;
> +	dqb->dd_diskdq.d_flags = type;
> +	dqb->dd_diskdq.d_id = cpu_to_be32(id);
>  
>  	if (xfs_sb_version_hascrc(&mp->m_sb)) {
> -		uuid_copy(&d->dd_uuid, &mp->m_sb.sb_meta_uuid);
> -		xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk),
> +		uuid_copy(&dqb->dd_uuid, &mp->m_sb.sb_meta_uuid);
> +		xfs_update_cksum((char *)dqb, sizeof(struct xfs_dqblk),
>  				 XFS_DQUOT_CRC_OFF);
>  	}
>  
> diff --git a/fs/xfs/libxfs/xfs_quota_defs.h b/fs/xfs/libxfs/xfs_quota_defs.h
> index 8433656af0da..a2f8cb334bb3 100644
> --- a/fs/xfs/libxfs/xfs_quota_defs.h
> +++ b/fs/xfs/libxfs/xfs_quota_defs.h
> @@ -154,7 +154,7 @@ typedef uint16_t	xfs_qwarncnt_t;
>  extern xfs_failaddr_t xfs_dquot_verify(struct xfs_mount *mp,
>  		struct xfs_disk_dquot *ddq, xfs_dqid_t id, uint type);
>  extern int xfs_calc_dquots_per_chunk(unsigned int nbblks);
> -extern int xfs_dquot_repair(struct xfs_mount *mp, struct xfs_disk_dquot *ddq,
> +extern int xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb,
>  		xfs_dqid_t id, uint type);
>  
>  #endif	/* __XFS_QUOTA_H__ */
> diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
> index c71ad79bb2e6..6690b938d450 100644
> --- a/fs/xfs/xfs_qm.c
> +++ b/fs/xfs/xfs_qm.c
> @@ -867,7 +867,7 @@ xfs_qm_reset_dqcounts(
>  		 */
>  		fa = xfs_dquot_verify(mp, ddq, id + j, type);
>  		if (fa)
> -			xfs_dquot_repair(mp, ddq, id + j, type);
> +			xfs_dqblk_repair(mp, &dqb[j], id + j, type);
>  
>  		/*
>  		 * Reset type in case we are reusing group quota file for
> -- 
> 2.17.0
> 
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Christoph Hellwig May 7, 2018, 3:09 p.m. UTC | #2
I think this commit is mislabeld, it onl passes the xfs_dqblk,
but doesn't actually change any functionality as far as I can tell.

>  		if (fa)
> -			xfs_dquot_repair(mp, ddq, id + j, type);
> +			xfs_dqblk_repair(mp, &dqb[j], id + j, type);

Also please pick one of the two possible array index / pointer
arithmetics notations and stick to them in a single statement at least.
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diff mbox

Patch

diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
index c00174f32f0d..3b92427883fa 100644
--- a/fs/xfs/libxfs/xfs_dquot_buf.c
+++ b/fs/xfs/libxfs/xfs_dquot_buf.c
@@ -104,29 +104,26 @@  xfs_dquot_verify(
  * Do some primitive error checking on ondisk dquot data structures.
  */
 int
-xfs_dquot_repair(
+xfs_dqblk_repair(
 	struct xfs_mount	*mp,
-	struct xfs_disk_dquot	*ddq,
+	struct xfs_dqblk	*dqb,
 	xfs_dqid_t		id,
 	uint			type)
 {
-	struct xfs_dqblk	*d = (struct xfs_dqblk *)ddq;
-
-
 	/*
 	 * Typically, a repair is only requested by quotacheck.
 	 */
 	ASSERT(id != -1);
-	memset(d, 0, sizeof(xfs_dqblk_t));
+	memset(dqb, 0, sizeof(xfs_dqblk_t));
 
-	d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC);
-	d->dd_diskdq.d_version = XFS_DQUOT_VERSION;
-	d->dd_diskdq.d_flags = type;
-	d->dd_diskdq.d_id = cpu_to_be32(id);
+	dqb->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC);
+	dqb->dd_diskdq.d_version = XFS_DQUOT_VERSION;
+	dqb->dd_diskdq.d_flags = type;
+	dqb->dd_diskdq.d_id = cpu_to_be32(id);
 
 	if (xfs_sb_version_hascrc(&mp->m_sb)) {
-		uuid_copy(&d->dd_uuid, &mp->m_sb.sb_meta_uuid);
-		xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk),
+		uuid_copy(&dqb->dd_uuid, &mp->m_sb.sb_meta_uuid);
+		xfs_update_cksum((char *)dqb, sizeof(struct xfs_dqblk),
 				 XFS_DQUOT_CRC_OFF);
 	}
 
diff --git a/fs/xfs/libxfs/xfs_quota_defs.h b/fs/xfs/libxfs/xfs_quota_defs.h
index 8433656af0da..a2f8cb334bb3 100644
--- a/fs/xfs/libxfs/xfs_quota_defs.h
+++ b/fs/xfs/libxfs/xfs_quota_defs.h
@@ -154,7 +154,7 @@  typedef uint16_t	xfs_qwarncnt_t;
 extern xfs_failaddr_t xfs_dquot_verify(struct xfs_mount *mp,
 		struct xfs_disk_dquot *ddq, xfs_dqid_t id, uint type);
 extern int xfs_calc_dquots_per_chunk(unsigned int nbblks);
-extern int xfs_dquot_repair(struct xfs_mount *mp, struct xfs_disk_dquot *ddq,
+extern int xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb,
 		xfs_dqid_t id, uint type);
 
 #endif	/* __XFS_QUOTA_H__ */
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index c71ad79bb2e6..6690b938d450 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -867,7 +867,7 @@  xfs_qm_reset_dqcounts(
 		 */
 		fa = xfs_dquot_verify(mp, ddq, id + j, type);
 		if (fa)
-			xfs_dquot_repair(mp, ddq, id + j, type);
+			xfs_dqblk_repair(mp, &dqb[j], id + j, type);
 
 		/*
 		 * Reset type in case we are reusing group quota file for