linux-kernel - [PATCH] hugetlbfs: Remove unneeded return value of hugetlb

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Date:   Mon, 8 Feb 2021 03:46:37 -0500
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <mike.kravetz@...cle.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] hugetlbfs: Remove unneeded return value of hugetlb_vmtruncate()

The function hugetlb_vmtruncate() is guaranteed to always success since
commit 7aa91e104028 ("hugetlb: allow extending ftruncate on hugetlbfs").
So we should remove the unneeded return value which is always 0.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 fs/hugetlbfs/inode.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 394da2ab08ad..701c82c36138 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -567,7 +567,7 @@ static void hugetlbfs_evict_inode(struct inode *inode)
 	clear_inode(inode);
 }
 
-static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
+static void hugetlb_vmtruncate(struct inode *inode, loff_t offset)
 {
 	pgoff_t pgoff;
 	struct address_space *mapping = inode->i_mapping;
@@ -582,7 +582,6 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
 		hugetlb_vmdelete_list(&mapping->i_mmap, pgoff, 0);
 	i_mmap_unlock_write(mapping);
 	remove_inode_hugepages(inode, offset, LLONG_MAX);
-	return 0;
 }
 
 static long hugetlbfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
@@ -781,9 +780,7 @@ static int hugetlbfs_setattr(struct user_namespace *mnt_userns,
 		if ((newsize < oldsize && (info->seals & F_SEAL_SHRINK)) ||
 		    (newsize > oldsize && (info->seals & F_SEAL_GROW)))
 			return -EPERM;
-		error = hugetlb_vmtruncate(inode, newsize);
-		if (error)
-			return error;
+		hugetlb_vmtruncate(inode, newsize);
 	}
 
 	setattr_copy(&init_user_ns, inode, attr);
-- 
2.19.1