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Btrfs: do delay iput in sync_fs
We get lock inversion with umount if we allow iputs from sync_fs, so use the delay iput flag to keep this from happening. Thanks, Reported-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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@ -862,7 +862,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
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return 0;
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}
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btrfs_wait_all_ordered_extents(fs_info, 0);
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btrfs_wait_all_ordered_extents(fs_info, 1);
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trans = btrfs_attach_transaction_barrier(root);
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if (IS_ERR(trans)) {
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