fs/buffer: Remove redundant assignment to err

Variable 'err' set but not used.

fs/buffer.c:2613:2: warning: Value stored to 'err' is never read.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4589
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/fs/buffer.c b/fs/buffer.c
index 9e1e2ad..10390f5 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2581,7 +2581,7 @@ int block_truncate_page(struct address_space *mapping,
        struct inode *inode = mapping->host;
        struct page *page;
        struct buffer_head *bh;
-       int err;
+       int err = 0;
 
        blocksize = i_blocksize(inode);
        length = offset & (blocksize - 1);
@@ -2594,9 +2594,8 @@ int block_truncate_page(struct address_space *mapping,
        iblock = (sector_t)index << (PAGE_SHIFT - inode->i_blkbits);
        
        page = grab_cache_page(mapping, index);
-       err = -ENOMEM;
        if (!page)
-               goto out;
+               return -ENOMEM;
 
        if (!page_has_buffers(page))
                create_empty_buffers(page, blocksize, 0);
@@ -2610,7 +2609,6 @@ int block_truncate_page(struct address_space *mapping,
                pos += blocksize;
        }
 
-       err = 0;
        if (!buffer_mapped(bh)) {
                WARN_ON(bh->b_size != blocksize);
                err = get_block(inode, iblock, bh, 0);
@@ -2634,12 +2632,11 @@ int block_truncate_page(struct address_space *mapping,
 
        zero_user(page, offset, length);
        mark_buffer_dirty(bh);
-       err = 0;
 
 unlock:
        unlock_page(page);
        put_page(page);
-out:
+
        return err;
 }
 EXPORT_SYMBOL(block_truncate_page);