linux-ext4 - [PATCH v2] ext4: remove readpage() check up for mmap file

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Message-ID: <53B4F5B7.7060209@huawei.com>
Date:	Thu, 3 Jul 2014 14:18:31 +0800
From:	Zhang Zhen <zhenzhang.zhang@...wei.com>
To:	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
CC:	<wangnan0@...wei.com>, "Zwisler, Ross" <ross.zwisler@...el.com>,
	"tytso@....edu" <tytso@....edu>
Subject: [PATCH v2] ext4: remove readpage() check up for mmap file

There is no kind of file does not supply page reading function.

Change v1 -> v2:
- deleted the mapping variable

Signed-off-by: Zhang Zhen <zhenzhang.zhang@...wei.com>
---
 fs/ext4/file.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 8695f70..aca7b24 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -200,10 +200,6 @@ static const struct vm_operations_struct ext4_file_vm_ops = {

 static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct address_space *mapping = file->f_mapping;
-
-	if (!mapping->a_ops->readpage)
-		return -ENOEXEC;
 	file_accessed(file);
 	vma->vm_ops = &ext4_file_vm_ops;
 	return 0;
-- 
1.8.1.2


.




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