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btrfs: make success path out of btrfs_init_dev_replace_tgtdev more clear

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This is a preparatory cleanup that will make clear that the only
successful way out of btrfs_init_dev_replace_tgtdev will also set the
device_out to a valid pointer. With this guarantee, the callers can be
simplified.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2018-03-20 15:37:08 +01:00
parent 00251a527a
commit 6fc4749d25
2 changed files with 7 additions and 2 deletions
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1
fs/btrfs/dev-replace.c
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@@ -358,7 +358,6 @@ int btrfs_dev_replace_start(struct btrfs_fs_info *fs_info,
dev_replace->cont_reading_from_srcdev_mode = read_src;
WARN_ON(!src_device);
dev_replace->srcdev = src_device;
WARN_ON(!tgt_device);
dev_replace->tgtdev = tgt_device;
btrfs_info_in_rcu(fs_info,