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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>
This commit is contained in:
jon ernst 2013-07-01 08:12:39 -04:00 committed by Theodore Ts'o
parent 64cb927371
commit 353eefd338
1 changed files with 1 additions and 9 deletions
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10
fs/ext4/inode.c
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@ -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);