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Btrfs: update comments in cache_save_setup

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We also don't bother to flush free space cache while with free space
tree.

Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2017-03-06 13:49:02 -08:00 committed by David Sterba
parent 539b50d2f6
commit 1a79c1f246
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/extent-tree.c
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@ -3443,7 +3443,8 @@ static int cache_save_setup(struct btrfs_block_group_cache *block_group,
/*
* don't bother trying to write stuff out _if_
* a) we're not cached,
* b) we're with nospace_cache mount option.
* b) we're with nospace_cache mount option,
* c) we're with v2 space_cache (FREE_SPACE_TREE).
*/
dcs = BTRFS_DC_WRITTEN;
spin_unlock(&block_group->lock);