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In vm_swapout_map_deactivate_pages(), it is enough to lock the map for read.

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Reviewed by:	alc, markj (as part of the larger patch)
Tested by:	pho (again, as part of the larger patch)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D13671
This commit is contained in:
Konstantin Belousov 2017-12-28 22:56:30 +00:00
parent 54ef33c2a8
commit 0080a8fa95
1 changed files with 2 additions and 2 deletions
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4
sys/vm/vm_swapout.c
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@ -263,7 +263,7 @@ vm_swapout_map_deactivate_pages(vm_map_t map, long desired)
vm_object_t obj, bigobj;
int nothingwired;
if (!vm_map_trylock(map))
if (!vm_map_trylock_read(map))
return;
bigobj = NULL;
@ -327,7 +327,7 @@ vm_swapout_map_deactivate_pages(vm_map_t map, long desired)
vm_map_max(map));
}
vm_map_unlock(map);
vm_map_unlock_read(map);
}
/*