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Subject[PATCH v3 2/3] quota: Replace all block number checking with helper function
Date
Cleanup all block checking places, replace them with helper function
do_check_range().

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
---
fs/quota/quota_tree.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/fs/quota/quota_tree.c b/fs/quota/quota_tree.c
index 7e65d67de9f3..0fa73ca28045 100644
--- a/fs/quota/quota_tree.c
+++ b/fs/quota/quota_tree.c
@@ -518,12 +518,10 @@ static int remove_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
goto out_buf;
}
newblk = le32_to_cpu(ref[get_index(info, dquot->dq_id, depth)]);
- if (newblk < QT_TREEOFF || newblk >= info->dqi_blocks) {
- quota_error(dquot->dq_sb, "Getting block too big (%u >= %u)",
- newblk, info->dqi_blocks);
- ret = -EUCLEAN;
+ ret = do_check_range(dquot->dq_sb, "block", newblk, QT_TREEOFF,
+ info->dqi_blocks - 1);
+ if (ret)
goto out_buf;
- }

if (depth == info->dqi_qtree_depth - 1) {
ret = free_dqentry(info, dquot, newblk);
@@ -624,12 +622,10 @@ static loff_t find_tree_dqentry(struct qtree_mem_dqinfo *info,
blk = le32_to_cpu(ref[get_index(info, dquot->dq_id, depth)]);
if (!blk) /* No reference? */
goto out_buf;
- if (blk < QT_TREEOFF || blk >= info->dqi_blocks) {
- quota_error(dquot->dq_sb, "Getting block too big (%u >= %u)",
- blk, info->dqi_blocks);
- ret = -EUCLEAN;
+ ret = do_check_range(dquot->dq_sb, "block", blk, QT_TREEOFF,
+ info->dqi_blocks - 1);
+ if (ret)
goto out_buf;
- }

if (depth < info->dqi_qtree_depth - 1)
ret = find_tree_dqentry(info, dquot, blk, depth+1);
--
2.31.1
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