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ext4: cleanup clean_bdev_aliases() calls 

Now, we have already handle all cases of forgetting buffer in
jbd2_journal_forget(), the buffer should not be mapped to blockdevice
when reallocating it. So this patch remove all clean_bdev_aliases() and
clean_bdev_bh_alias() calls which were invoked by ext4 explicitly.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
zhangyi (F) 2019-02-10 23:32:07 -05:00 committed by Theodore Ts'o
parent 597599268e
commit 16e08b14a4
3 changed files with 2 additions and 21 deletions
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12
fs/ext4/extents.c
View File

@ -4048,18 +4048,8 @@ out:
} else
allocated = ret;
map->m_flags |= EXT4_MAP_NEW;
/*
* if we allocated more blocks than requested
* we need to make sure we unmap the extra block
* allocated. The actual needed block will get
* unmapped later when we find the buffer_head marked
* new.
*/
if (allocated > map->m_len) {
clean_bdev_aliases(inode->i_sb->s_bdev, newblock + map->m_len,
allocated - map->m_len);
if (allocated > map->m_len)
allocated = map->m_len;
}
map->m_len = allocated;
map_out:

7
fs/ext4/inode.c
View File

@ -678,8 +678,6 @@ found:
if (flags & EXT4_GET_BLOCKS_ZERO &&
map->m_flags & EXT4_MAP_MAPPED &&
map->m_flags & EXT4_MAP_NEW) {
clean_bdev_aliases(inode->i_sb->s_bdev, map->m_pblk,
map->m_len);
ret = ext4_issue_zeroout(inode, map->m_lblk,
map->m_pblk, map->m_len);
if (ret) {
@ -1194,7 +1192,6 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len,
if (err)
break;
if (buffer_new(bh)) {
clean_bdev_bh_alias(bh);
if (PageUptodate(page)) {
clear_buffer_new(bh);
set_buffer_uptodate(bh);
@ -2490,10 +2487,6 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd)
}
BUG_ON(map->m_len == 0);
if (map->m_flags & EXT4_MAP_NEW) {
clean_bdev_aliases(inode->i_sb->s_bdev, map->m_pblk,
map->m_len);
}
return 0;
}

4
fs/ext4/page-io.c
View File

@ -467,10 +467,8 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
ext4_io_submit(io);
continue;
}
if (buffer_new(bh)) {
if (buffer_new(bh))
clear_buffer_new(bh);
clean_bdev_bh_alias(bh);
}
set_buffer_async_write(bh);
nr_to_submit++;
} while ((bh = bh->b_this_page) != head);