xfs: also use xfs_bmap_btalloc_accounting for RT allocations

Make xfs_bmap_btalloc_accounting more generic by handling the RT quota
reservations and then also use it from xfs_bmap_rtalloc instead of
open coding the accounting logic there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>

Author: Christoph Hellwig

fs/xfs/libxfs/xfs_bmap.c

@@ -3263,10 +3263,14 @@ xfs_bmap_btalloc_select_lengths(
 }
 
 /* Update all inode and quota accounting for the allocation we just did. */
-static void
-xfs_bmap_btalloc_accounting(
+void
+xfs_bmap_alloc_account(
 	struct xfs_bmalloca	*ap)
 {
+	bool			isrt = XFS_IS_REALTIME_INODE(ap->ip) &&
+					(ap->flags & XFS_BMAPI_ATTRFORK);
+	uint			fld;
+
 	if (ap->flags & XFS_BMAPI_COWFORK) {
 		/*
 		 * COW fork blocks are in-core only and thus are treated as
@@ -3291,7 +3295,8 @@ xfs_bmap_btalloc_accounting(
 		 * to that of a delalloc extent.
 		 */
 		ap->ip->i_delayed_blks += ap->length;
-		xfs_trans_mod_dquot_byino(ap->tp, ap->ip, XFS_TRANS_DQ_RES_BLKS,
+		xfs_trans_mod_dquot_byino(ap->tp, ap->ip, isrt ?
+				XFS_TRANS_DQ_RES_RTBLKS : XFS_TRANS_DQ_RES_BLKS,
 				-(long)ap->length);
 		return;
 	}
@@ -3302,10 +3307,12 @@ xfs_bmap_btalloc_accounting(
 	if (ap->wasdel) {
 		ap->ip->i_delayed_blks -= ap->length;
 		xfs_mod_delalloc(ap->ip->i_mount, -(int64_t)ap->length);
+		fld = isrt ? XFS_TRANS_DQ_DELRTBCOUNT : XFS_TRANS_DQ_DELBCOUNT;
+	} else {
+		fld = isrt ? XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
 	}
-	xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
-		ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT : XFS_TRANS_DQ_BCOUNT,
-		ap->length);
+
+	xfs_trans_mod_dquot_byino(ap->tp, ap->ip, fld, ap->length);
 }
 
 static int
@@ -3379,7 +3386,7 @@ xfs_bmap_process_allocated_extent(
 		ap->offset = orig_offset;
 	else if (ap->offset + ap->length < orig_offset + orig_length)
 		ap->offset = orig_offset + orig_length - ap->length;
-	xfs_bmap_btalloc_accounting(ap);
+	xfs_bmap_alloc_account(ap);
 }
 
 #ifdef DEBUG

fs/xfs/libxfs/xfs_bmap.h

@@ -116,6 +116,8 @@ static inline int xfs_bmapi_whichfork(uint32_t bmapi_flags)
 	return XFS_DATA_FORK;
 }
 
+void xfs_bmap_alloc_account(struct xfs_bmalloca *ap);
+
 /*
  * Special values for xfs_bmbt_irec_t br_startblock field.
  */

fs/xfs/xfs_bmap_util.c

@@ -168,17 +168,7 @@ xfs_bmap_rtalloc(
 	if (rtx != NULLRTEXTNO) {
 		ap->blkno = xfs_rtx_to_rtb(mp, rtx);
 		ap->length = xfs_rtxlen_to_extlen(mp, ralen);
-		ap->ip->i_nblocks += ap->length;
-		xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
-		if (ap->wasdel)
-			ap->ip->i_delayed_blks -= ap->length;
-		/*
-		 * Adjust the disk quota also. This was reserved
-		 * earlier.
-		 */
-		xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
-			ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT :
-					XFS_TRANS_DQ_RTBCOUNT, ap->length);
+		xfs_bmap_alloc_account(ap);
 		return 0;
 	}