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ipvs: Fix possible deadlock in sync code

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Commit 998e7a7680 ("ipvs: Use kthread_run()
instead of doing a double-fork via kernel_thread()") introduced a possible
deadlock in the sync code. We need to use the _bh versions for the lock, as the
lock is also accessed from a bottom half.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Acked-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Sven Wegener 2008-08-10 09:14:05 +00:00
parent 8123b421e8
commit bc0fde2fad
1 changed files with 2 additions and 2 deletions
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4
net/ipv4/ipvs/ip_vs_sync.c
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@ -904,9 +904,9 @@ int stop_sync_thread(int state)
* progress of stopping the master sync daemon.
*/
spin_lock(&ip_vs_sync_lock);
spin_lock_bh(&ip_vs_sync_lock);
ip_vs_sync_state &= ~IP_VS_STATE_MASTER;
spin_unlock(&ip_vs_sync_lock);
spin_unlock_bh(&ip_vs_sync_lock);
kthread_stop(sync_master_thread);
sync_master_thread = NULL;
} else if (state == IP_VS_STATE_BACKUP) {