From 16e08b14a4550bb167c48e918b26ef0d4980e9d1 Mon Sep 17 00:00:00 2001
From: "zhangyi (F)" <yi.zhang@huawei.com>
Date: Sun, 10 Feb 2019 23:32:07 -0500
Subject: [PATCH] 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>
---
fs/ext4/extents.c | 12 +-----------
fs/ext4/inode.c | 7 -------
fs/ext4/page-io.c | 4 +---
3 files changed, 2 insertions(+), 21 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 240b6dea5441b..82e239a176c73 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4048,18 +4048,8 @@ ext4_ext_handle_unwritten_extents(handle_t *handle, struct inode *inode,
} 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:
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 213d1857a7cfb..dd4641f3cdb9e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -678,8 +678,6 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
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;
}
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 2aa62d58d8dd8..15599466809b3 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -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);
--
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