ext4: delete unnecessary C statements

Comparing unsigned variable with 0 always returns false.
err = 0 is duplicated and unnecessary.

[ tytso: Also cleaned up error handling in ext4_block_zero_page_range() ]

Signed-off-by: "Jon Ernst" <jonernst07@gmx.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 753c156..6d051de 100644 (file)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1100,8 +1100,6 @@ static int ext4_write_end(struct file *file,
        if (i_size_changed)
                ext4_mark_inode_dirty(handle, inode);
 
-       if (copied < 0)
-               ret = copied;
        if (pos + len > inode->i_size && ext4_can_truncate(inode))
                /* if we have allocated more blocks and copied
                 * less. We will have blocks allocated outside
@@ -3368,13 +3366,10 @@ int ext4_block_zero_page_range(handle_t *handle,
                iblock++;
                pos += blocksize;
        }
-
-       err = 0;
        if (buffer_freed(bh)) {
                BUFFER_TRACE(bh, "freed: skip");
                goto unlock;
        }
-
        if (!buffer_mapped(bh)) {
                BUFFER_TRACE(bh, "unmapped");
                ext4_get_block(inode, iblock, bh, 0);
@@ -3397,22 +3392,19 @@ int ext4_block_zero_page_range(handle_t *handle,
                if (!buffer_uptodate(bh))
                        goto unlock;
        }
-
        if (ext4_should_journal_data(inode)) {
                BUFFER_TRACE(bh, "get write access");
                err = ext4_journal_get_write_access(handle, bh);
                if (err)
                        goto unlock;
        }
-
        zero_user(page, offset, length);
-
        BUFFER_TRACE(bh, "zeroed end of block");
 
-       err = 0;
        if (ext4_should_journal_data(inode)) {
                err = ext4_handle_dirty_metadata(handle, inode, bh);
        } else {
+               err = 0;
                mark_buffer_dirty(bh);
                if (ext4_test_inode_state(inode, EXT4_STATE_ORDERED_MODE))
                        err = ext4_jbd2_file_inode(handle, inode);