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xfs: clean up dqblk extraction

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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@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
This commit is contained in:
Darrick J. Wong 2023-11-20 10:31:38 -08:00 committed by Chandan Babu R
parent 98b1cc82c4
commit ed17f7da5f
2 changed files with 7 additions and 5 deletions
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5
fs/xfs/xfs_dquot.c
View File

@ -562,7 +562,8 @@ 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.
@ -1250,7 +1251,7 @@ xfs_qm_dqflush(
}
/* 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);
/*

7
fs/xfs/xfs_dquot_item_recover.c
View File

@ -65,6 +65,7 @@ xlog_recover_dquot_commit_pass2(
{
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;
@ -130,14 +131,14 @@ xlog_recover_dquot_commit_pass2(
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) {
@ -147,7 +148,7 @@ xlog_recover_dquot_commit_pass2(
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);
}