linux-kernel - [PATCH v2] xfs: donot need to check return value of xlog

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Message-ID: <471db2ec-8836-14f5-fb33-579b294943e9@huawei.com>
Date:   Thu, 1 Sep 2022 10:59:08 +0800
From:   Zhiqiang Liu <liuzhiqiang26@...wei.com>
To:     <djwong@...nel.org>, <linux-xfs@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     linfeilong <linfeilong@...wei.com>,
        wuguanghao <wuguanghao3@...wei.com>, <liuzhiqiang26@...wei.com>
Subject: [PATCH v2] xfs: donot need to check return value of xlog_kvmalloc()

In xfs_attri_log_nameval_alloc(), xlog_kvmalloc() is called
to alloc memory, which will always return
successfully, so we donot need to check return value.

Reviewed-by: Eric Sandeen <sandeen@...hat.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@...wei.com>
---
Changelog:
V1 -> V2:
  1.add Reviewed-by: Eric Sandeen <sandeen@...hat.com>
  2.remove santity check of xfs_attri_log_nameval_alloc()
    suggested by Eric Sandeen.

 fs/xfs/xfs_attr_item.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c
index 5077a7ad5646..cf5ce607dc05 100644
--- a/fs/xfs/xfs_attr_item.c
+++ b/fs/xfs/xfs_attr_item.c
@@ -86,8 +86,6 @@ xfs_attri_log_nameval_alloc(
 	 */
 	nv = xlog_kvmalloc(sizeof(struct xfs_attri_log_nameval) +
 					name_len + value_len);
-	if (!nv)
-		return nv;

 	nv->name.i_addr = nv + 1;
 	nv->name.i_len = name_len;
@@ -441,8 +439,6 @@ xfs_attr_create_intent(
 		attr->xattri_nameval = xfs_attri_log_nameval_alloc(args->name,
 				args->namelen, args->value, args->valuelen);
 	}
-	if (!attr->xattri_nameval)
-		return ERR_PTR(-ENOMEM);

 	attrip = xfs_attri_init(mp, attr->xattri_nameval);
 	xfs_trans_add_item(tp, &attrip->attri_item);
@@ -762,8 +758,6 @@ xlog_recover_attri_commit_pass2(
 	nv = xfs_attri_log_nameval_alloc(attr_name,
 			attri_formatp->alfi_name_len, attr_value,
 			attri_formatp->alfi_value_len);
-	if (!nv)
-		return -ENOMEM;

 	attrip = xfs_attri_init(mp, nv);
 	error = xfs_attri_copy_format(&item->ri_buf[0], &attrip->attri_format);
-- 
2.33.0