xfs: remove xfs_qm_vop_chown_reserve

Now that the only caller of this function is xfs_trans_alloc_ichange,
just open-code the meat of _chown_reserve in that caller.  Drop the
(redundant) [ugp]id checks because xfs has a 1:1 relationship between
quota ids and incore dquots.
Signed-off-by: NDarrick J. Wong <djwong@kernel.org>
Reviewed-by: NBrian Foster <bfoster@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>

fs/xfs/xfs_qm.c

@@ -1817,54 +1817,6 @@ xfs_qm_vop_chown(
 	return prevdq;
 }
 
-/*
- * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
- */
-int
-xfs_qm_vop_chown_reserve(
-	struct xfs_trans	*tp,
-	struct xfs_inode	*ip,
-	struct xfs_dquot	*udqp,
-	struct xfs_dquot	*gdqp,
-	struct xfs_dquot	*pdqp,
-	uint			flags)
-{
-	struct xfs_mount	*mp = ip->i_mount;
-	unsigned int		blkflags;
-	struct xfs_dquot	*udq_delblks = NULL;
-	struct xfs_dquot	*gdq_delblks = NULL;
-	struct xfs_dquot	*pdq_delblks = NULL;
-
-	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
-	ASSERT(XFS_IS_QUOTA_RUNNING(mp));
-
-	blkflags = XFS_IS_REALTIME_INODE(ip) ?
-			XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
-
-	if (XFS_IS_UQUOTA_ON(mp) && udqp &&
-	    i_uid_read(VFS_I(ip)) != udqp->q_id)
-		udq_delblks = udqp;
-
-	if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
-	    i_gid_read(VFS_I(ip)) != gdqp->q_id)
-		gdq_delblks = gdqp;
-
-	if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp &&
-	    ip->i_d.di_projid != pdqp->q_id)
-		pdq_delblks = pdqp;
-
-	/*
-	 * Reserve enough quota to handle blocks on disk and reserved for a
-	 * delayed allocation.  We'll actually transfer the delalloc
-	 * reservation between dquots at chown time, even though that part is
-	 * only semi-transactional.
-	 */
-	return xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, udq_delblks,
-			gdq_delblks, pdq_delblks,
-			ip->i_d.di_nblocks + ip->i_delayed_blks,
-			1, blkflags | flags);
-}
-
 int
 xfs_qm_vop_rename_dqattach(
 	struct xfs_inode	**i_tab)

fs/xfs/xfs_quota.h

@@ -98,9 +98,6 @@ extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
 		struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
-extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *,
-		struct xfs_dquot *, struct xfs_dquot *,
-		struct xfs_dquot *, uint);
 extern int xfs_qm_dqattach(struct xfs_inode *);
 extern int xfs_qm_dqattach_locked(struct xfs_inode *ip, bool doalloc);
 extern void xfs_qm_dqdetach(struct xfs_inode *);
@@ -162,7 +159,6 @@ xfs_trans_reserve_quota_icreate(struct xfs_trans *tp, struct xfs_dquot *udqp,
 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
 #define xfs_qm_vop_rename_dqattach(it)					(0)
 #define xfs_qm_vop_chown(tp, ip, old, new)				(NULL)
-#define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl)			(0)
 #define xfs_qm_dqattach(ip)						(0)
 #define xfs_qm_dqattach_locked(ip, fl)					(0)
 #define xfs_qm_dqdetach(ip)

fs/xfs/xfs_trans.c

@@ -1156,8 +1156,20 @@ xfs_trans_alloc_ichange(
 	if (pdqp == ip->i_pdquot)
 		pdqp = NULL;
 	if (udqp || gdqp || pdqp) {
-		error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, pdqp,
-				force ? XFS_QMOPT_FORCE_RES : 0);
+		unsigned int	qflags = XFS_QMOPT_RES_REGBLKS;
+
+		if (force)
+			qflags |= XFS_QMOPT_FORCE_RES;
+
+		/*
+		 * Reserve enough quota to handle blocks on disk and reserved
+		 * for a delayed allocation.  We'll actually transfer the
+		 * delalloc reservation between dquots at chown time, even
+		 * though that part is only semi-transactional.
+		 */
+		error = xfs_trans_reserve_quota_bydquots(tp, mp, udqp, gdqp,
+				pdqp, ip->i_d.di_nblocks + ip->i_delayed_blks,
+				1, qflags);
 		if (error)
 			goto out_cancel;
 	}