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| author | Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com> | 2016-06-20 09:18:52 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-10-24 18:20:29 +0200 |
| commit | 9d1032cc49a8a1065e79ee323de66bcb4fdbd535 (patch) | |
| tree | 949523d20856471ba5d48aaca9cf26c70638b59a | |
| parent | 9c894696f56f5d84fb5766af81bcda4a7cb9a842 (diff) | |
btrfs: fix WARNING in btrfs_select_ref_head()
This issue was found when testing in-band dedupe enospc behaviour,
sometimes run_one_delayed_ref() may fail for enospc reason, then
__btrfs_run_delayed_refs（）will return, but forget to add num_heads_read
back, which will trigger "WARN_ON(delayed_refs->num_heads_ready == 0)" in
btrfs_select_ref_head().
Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>