[PATCH -next] ext4: remove unused variable 'mapping'

[YueHaibing]

fs/ext4/inode.c: In function 'ext4_page_mkwrite':
fs/ext4/inode.c:5910:24: warning: unused variable 'mapping' [-Wunused-variable]

commit 4a58d8158f6d ("fs: Fix page_mkwrite off-by-one errors")
left behind this unused variable.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 fs/ext4/inode.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9a3e8d0..d0049fd 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5907,7 +5907,6 @@ vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf)
 	vm_fault_t ret;
 	struct file *file = vma->vm_file;
 	struct inode *inode = file_inode(file);
-	struct address_space *mapping = inode->i_mapping;
 	handle_t *handle;
 	get_block_t *get_block;
 	int retries = 0;
-- 
2.7.4