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branches/zip: Add a clarifying comment to the insert buffer mutex/lock

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order check in sync0sync.c.
This commit is contained in:
sunny 2008-06-17 19:32:18 +00:00
parent 33c5bfc756
commit ccf2f704e1
1 changed files with 3 additions and 0 deletions
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3
sync/sync0sync.c
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@ -1089,6 +1089,9 @@ sync_thread_add_level(
|| sync_thread_levels_g(array, SYNC_REC_LOCK));
break;
case SYNC_IBUF_BITMAP:
/* Either the thread must own the master mutex to all
the bitmap pages, or it is allowed to latch only ONE
bitmap page. */
ut_a((sync_thread_levels_contain(array, SYNC_IBUF_BITMAP_MUTEX)
&& sync_thread_levels_g(array, SYNC_IBUF_BITMAP - 1))
|| sync_thread_levels_g(array, SYNC_IBUF_BITMAP));