提交 e6d261e3 编写于 作者: J Johannes Thumshirn 提交者: David Sterba

btrfs: zoned: use regular writes for relocation

Now that we have a dedicated block group for relocation, we can use
REQ_OP_WRITE instead of  REQ_OP_ZONE_APPEND for writing out the data on
relocation.
Reviewed-by: NNaohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: NJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>
上级 35156d85
......@@ -1490,6 +1490,17 @@ bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
if (!is_data_inode(&inode->vfs_inode))
return false;
/*
* Using REQ_OP_ZONE_APPNED for relocation can break assumptions on the
* extent layout the relocation code has.
* Furthermore we have set aside own block-group from which only the
* relocation "process" can allocate and make sure only one process at a
* time can add pages to an extent that gets relocated, so it's safe to
* use regular REQ_OP_WRITE for this special case.
*/
if (btrfs_is_data_reloc_root(inode->root))
return false;
cache = btrfs_lookup_block_group(fs_info, start);
ASSERT(cache);
if (!cache)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册