From: Zhihao Cheng <chengzhihao1@huawei.com>
Date: Tue, 11 Oct 2022 03:47:30 +0000 (+0800)
Subject: ubifs: Fix wrong dirty space budget for dirty inode
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8e30559876d8f61296135ce2c92d3fdb90128ddf;p=linux.git

ubifs: Fix wrong dirty space budget for dirty inode

[ Upstream commit b248eaf049d9cdc5eb76b59399e4d3de233f02ac ]

Each dirty inode should reserve 'c->bi.inode_budget' bytes in space
budget calculation. Currently, space budget for dirty inode reports
more space than what UBIFS actually needs to write.

Fixes: 1e51764a3c2ac0 ("UBIFS: add new flash file system")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index c0b84e960b20c..bdb79be6dc0e2 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -403,7 +403,7 @@ static int calc_dd_growth(const struct ubifs_info *c,
 	dd_growth = req->dirtied_page ? c->bi.page_budget : 0;
 
 	if (req->dirtied_ino)
-		dd_growth += c->bi.inode_budget << (req->dirtied_ino - 1);
+		dd_growth += c->bi.inode_budget * req->dirtied_ino;
 	if (req->mod_dent)
 		dd_growth += c->bi.dent_budget;
 	dd_growth += req->dirtied_ino_d;