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| /linux/fs/btrfs/ |
| H A D | disk-io.c | diff 65d33fd7a6e4aaf9cd6577555d0b3c18fbefe415 Tue Apr 22 11:13:51 CEST 2014 Qu Wenruo <quwenruo@cn.fujitsu.com> btrfs: Add check to avoid cleanup roots already in fs_info->dead_roots.
Current btrfs_orphan_cleanup will also cleanup roots which is already in
fs_info->dead_roots without protection.
This will have conditional race with fs_info->cleaner_kthread.
This patch will use refs in root->root_item to detect roots in
dead_roots and avoid conflicts.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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