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btrfs: remove write and wait of struct walk_control 

The ->write and ->wait fields of struct walk_control, used for log trees,
are not used since 2008, more specifically since commit d0c803c404
("Btrfs: Record dirty pages tree-log pages in an extent_io tree") and
since commit d0c803c404 ("Btrfs: Record dirty pages tree-log pages in
an extent_io tree"). So just remove them, along with the function
btrfs_write_tree_block(), which is also not used anymore after removing
the ->write member.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2022-01-04 12:53:41 +00:00 committed by David Sterba
parent 09688c0166
commit c816d705b9
1 changed files with 5 additions and 23 deletions
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28
fs/btrfs/tree-log.c
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@ -270,12 +270,6 @@ void btrfs_end_log_trans(struct btrfs_root *root)
}
}
static int btrfs_write_tree_block(struct extent_buffer *buf)
{
return filemap_fdatawrite_range(buf->pages[0]->mapping, buf->start,
buf->start + buf->len - 1);
}
static void btrfs_wait_tree_block_writeback(struct extent_buffer *buf)
{
filemap_fdatawait_range(buf->pages[0]->mapping,
@ -294,16 +288,6 @@ struct walk_control {
*/
int free;
/* should we write out the extent buffer? This is used
* while flushing the log tree to disk during a sync
*/
int write;
/* should we wait for the extent buffer io to finish? Also used
* while flushing the log tree to disk for a sync
*/
int wait;
/* pin only walk, we record which extents on disk belong to the
* log trees
*/
@ -354,17 +338,15 @@ static int process_one_buffer(struct btrfs_root *log,
return ret;
}
if (wc->pin)
if (wc->pin) {
ret = btrfs_pin_extent_for_log_replay(wc->trans, eb->start,
eb->len);
if (ret)
return ret;
if (!ret && btrfs_buffer_uptodate(eb, gen, 0)) {
if (wc->pin && btrfs_header_level(eb) == 0)
if (btrfs_buffer_uptodate(eb, gen, 0) &&
btrfs_header_level(eb) == 0)
ret = btrfs_exclude_logged_extents(eb);
if (wc->write)
btrfs_write_tree_block(eb);
if (wc->wait)
btrfs_wait_tree_block_writeback(eb);
}
return ret;
}