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lvmetad: Fix a possible deadlock.

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If an update and a query were running in parallel, there was a slim but non-zero
chance of a deadlock due to (unnecessary) mutex nesting.
This commit is contained in:
Petr Rockai 2012-12-17 00:39:00 +01:00
parent ed23da95b6
commit fae1a611d2
1 changed files with 1 additions and 1 deletions
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daemons/lvmetad/lvmetad-core.c
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@ -671,8 +671,8 @@ static int update_metadata(lvmetad_state *s, const char *name, const char *_vgid
lock_vgid_to_metadata(s);
old = dm_hash_lookup(s->vgid_to_metadata, _vgid);
lock_vg(s, _vgid);
unlock_vgid_to_metadata(s);
lock_vg(s, _vgid);
seq = dm_config_find_int(metadata, "metadata/seqno", -1);