From: "Darrick J. Wong" <djwong@xxxxxxxxxx>
[ Upstream commit ed17f7da5f0c8b65b7b5f7c98beb0aadbc0546ee ]
Since the introduction of xfs_dqblk in V5, xfs really ought to find the
dqblk pointer from the dquot buffer, then compute the xfs_disk_dquot
pointer from the dqblk pointer. Fix the open-coded xfs_buf_offset calls
and do the type checking in the correct order.
Note that this has made no practical difference since the start of the
xfs_disk_dquot is coincident with the start of the xfs_dqblk.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Chandan Babu R <chandanbabu@xxxxxxxxxx>
Signed-off-by: Leah Rumancik <leah.rumancik@xxxxxxxxx>
---
fs/xfs/xfs_dquot.c | 5 +++--
fs/xfs/xfs_dquot_item_recover.c | 7 ++++---
2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 7f071757f278..a8b2f3b278ea 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -560,11 +560,12 @@ xfs_dquot_check_type(
STATIC int
xfs_dquot_from_disk(
struct xfs_dquot *dqp,
struct xfs_buf *bp)
{
- struct xfs_disk_dquot *ddqp = bp->b_addr + dqp->q_bufoffset;
+ struct xfs_dqblk *dqb = xfs_buf_offset(bp, dqp->q_bufoffset);
+ struct xfs_disk_dquot *ddqp = &dqb->dd_diskdq;
/*
* Ensure that we got the type and ID we were looking for.
* Everything else was checked by the dquot buffer verifier.
*/
@@ -1248,11 +1249,11 @@ xfs_qm_dqflush(
error = -EFSCORRUPTED;
goto out_abort;
}
/* Flush the incore dquot to the ondisk buffer. */
- dqblk = bp->b_addr + dqp->q_bufoffset;
+ dqblk = xfs_buf_offset(bp, dqp->q_bufoffset);
xfs_dquot_to_disk(&dqblk->dd_diskdq, dqp);
/*
* Clear the dirty field and remember the flush lsn for later use.
*/
diff --git a/fs/xfs/xfs_dquot_item_recover.c b/fs/xfs/xfs_dquot_item_recover.c
index 8966ba842395..db2cb5e4197b 100644
--- a/fs/xfs/xfs_dquot_item_recover.c
+++ b/fs/xfs/xfs_dquot_item_recover.c
@@ -63,10 +63,11 @@ xlog_recover_dquot_commit_pass2(
struct xlog_recover_item *item,
xfs_lsn_t current_lsn)
{
struct xfs_mount *mp = log->l_mp;
struct xfs_buf *bp;
+ struct xfs_dqblk *dqb;
struct xfs_disk_dquot *ddq, *recddq;
struct xfs_dq_logformat *dq_f;
xfs_failaddr_t fa;
int error;
uint type;
@@ -128,28 +129,28 @@ xlog_recover_dquot_commit_pass2(
&xfs_dquot_buf_ops);
if (error)
return error;
ASSERT(bp);
- ddq = xfs_buf_offset(bp, dq_f->qlf_boffset);
+ dqb = xfs_buf_offset(bp, dq_f->qlf_boffset);
+ ddq = &dqb->dd_diskdq;
/*
* If the dquot has an LSN in it, recover the dquot only if it's less
* than the lsn of the transaction we are replaying.
*/
if (xfs_has_crc(mp)) {
- struct xfs_dqblk *dqb = (struct xfs_dqblk *)ddq;
xfs_lsn_t lsn = be64_to_cpu(dqb->dd_lsn);
if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) {
goto out_release;
}
}
memcpy(ddq, recddq, item->ri_buf[1].i_len);
if (xfs_has_crc(mp)) {
- xfs_update_cksum((char *)ddq, sizeof(struct xfs_dqblk),
+ xfs_update_cksum((char *)dqb, sizeof(struct xfs_dqblk),
XFS_DQUOT_CRC_OFF);
}
ASSERT(dq_f->qlf_size == 2);
ASSERT(bp->b_mount == mp);
--
2.48.1.362.g079036d154-goog
