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ext4: remove buffer_uninit handling

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There isn't any need for setting BH_Uninit on buffers anymore.  It was
only used to signal we need to mark io_end as needing extent
conversion in add_bh_to_extent() but now we can mark the io_end
directly when mapping extent.

Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Jan Kara
2013-06-04 13:19:34 -04:00
committed by Theodore Ts'o
parent 4e7ea81db5
commit 3613d22807
3 changed files with 8 additions and 15 deletions
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4
fs/ext4/inode.c
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@@ -2047,8 +2047,6 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd)
clear_buffer_delay(bh);
bh->b_blocknr = pblock++;
}
if (mpd->map.m_flags & EXT4_MAP_UNINIT)
set_buffer_uninit(bh);
clear_buffer_unwritten(bh);
} while (++lblk < blocks &&
(bh = bh->b_this_page) != head);
@@ -2110,6 +2108,8 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd)
err = ext4_map_blocks(handle, inode, map, get_blocks_flags);
if (err < 0)
return err;
if (map->m_flags & EXT4_MAP_UNINIT)
ext4_set_io_unwritten_flag(inode, mpd->io_submit.io_end);
BUG_ON(map->m_len == 0);
if (map->m_flags & EXT4_MAP_NEW) {