Thread (30 messages) 30 messages, 3 authors, 2021-02-04

Re: [PATCH v6 1/7] xfs: rename `new' to `delta' in xfs_growfs_data_private()

From: Brian Foster <hidden>
Date: 2021-02-02 19:39:50

On Tue, Jan 26, 2021 at 08:56:15PM +0800, Gao Xiang wrote:
It actually means the delta block count of growfs. Rename it in order
to make it clear. Also introduce nb_div to avoid reusing `delta`.

Reviewed-by: Darrick J. Wong <redacted>
Signed-off-by: Gao Xiang <redacted>
---
Looks reasonable:

Reviewed-by: Brian Foster <redacted>
quoted hunk ↗ jump to hunk
 fs/xfs/xfs_fsops.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 959ce91a3755..62600d78bbf1 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -32,8 +32,8 @@ xfs_growfs_data_private(
 	int			error;
 	xfs_agnumber_t		nagcount;
 	xfs_agnumber_t		nagimax = 0;
-	xfs_rfsblock_t		nb, nb_mod;
-	xfs_rfsblock_t		new;
+	xfs_rfsblock_t		nb, nb_div, nb_mod;
+	xfs_rfsblock_t		delta;
 	xfs_agnumber_t		oagcount;
 	xfs_trans_t		*tp;
 	struct aghdr_init_data	id = {};
@@ -50,16 +50,16 @@ xfs_growfs_data_private(
 		return error;
 	xfs_buf_relse(bp);
 
-	new = nb;	/* use new as a temporary here */
-	nb_mod = do_div(new, mp->m_sb.sb_agblocks);
-	nagcount = new + (nb_mod != 0);
+	nb_div = nb;
+	nb_mod = do_div(nb_div, mp->m_sb.sb_agblocks);
+	nagcount = nb_div + (nb_mod != 0);
 	if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
 		nagcount--;
 		nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks;
 		if (nb < mp->m_sb.sb_dblocks)
 			return -EINVAL;
 	}
-	new = nb - mp->m_sb.sb_dblocks;
+	delta = nb - mp->m_sb.sb_dblocks;
 	oagcount = mp->m_sb.sb_agcount;
 
 	/* allocate the new per-ag structures */
@@ -89,7 +89,7 @@ xfs_growfs_data_private(
 	INIT_LIST_HEAD(&id.buffer_list);
 	for (id.agno = nagcount - 1;
 	     id.agno >= oagcount;
-	     id.agno--, new -= id.agsize) {
+	     id.agno--, delta -= id.agsize) {
 
 		if (id.agno == nagcount - 1)
 			id.agsize = nb -
@@ -110,8 +110,8 @@ xfs_growfs_data_private(
 	xfs_trans_agblocks_delta(tp, id.nfree);
 
 	/* If there are new blocks in the old last AG, extend it. */
-	if (new) {
-		error = xfs_ag_extend_space(mp, tp, &id, new);
+	if (delta) {
+		error = xfs_ag_extend_space(mp, tp, &id, delta);
 		if (error)
 			goto out_trans_cancel;
 	}
@@ -143,7 +143,7 @@ xfs_growfs_data_private(
 	 * If we expanded the last AG, free the per-AG reservation
 	 * so we can reinitialize it with the new size.
 	 */
-	if (new) {
+	if (delta) {
 		struct xfs_perag	*pag;
 
 		pag = xfs_perag_get(mp, id.agno);
-- 
2.27.0
  
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