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Code Issues Releases Activity

o Acquire and release Giant in vm_map_wakeup() to prevent

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a lost wakeup().

Reviewed by:	tegge
This commit is contained in:
Alan Cox 2002-06-17 13:27:40 +00:00
parent b887806d7b
commit b49ecb86d0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=98343
1 changed files with 7 additions and 0 deletions
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7
sys/vm/vm_map.c
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@ -435,6 +435,13 @@ static __inline void
vm_map_wakeup(vm_map_t map)
{
/*
* Acquire and release Giant to prevent a wakeup() from being
* performed (and lost) between the vm_map_unlock() and the
* tsleep() in vm_map_unlock_and_wait().
*/
mtx_lock(&Giant);
mtx_unlock(&Giant);
wakeup(&map->root);
}