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| author | tegge <tegge@FreeBSD.org> | 2002-02-19 23:19:30 +0000 |
|---|---|---|
| committer | tegge <tegge@FreeBSD.org> | 2002-02-19 23:19:30 +0000 |
| commit | 5f4060fe3b8fa452dbd71d3403ece380470dae76 (patch) | |
| tree | 99edeec5e5d906e1fc6a786d33ae94e0a71f13df /sys/vm/vm_page.h | |
| parent | 872134cfe5d102e39b3dbc8363c48462882de702 (diff) | |
| download | FreeBSD-src-5f4060fe3b8fa452dbd71d3403ece380470dae76.zip FreeBSD-src-5f4060fe3b8fa452dbd71d3403ece380470dae76.tar.gz | |
Add a page queue, PQ_HOLD, that temporarily owns pages with nonzero hold
count that would otherwise be on one of the free queues. This eliminates a
panic when broken programs unmap memory that still has pending IO from raw
devices.
Reviewed by: dillon, alc
Diffstat (limited to 'sys/vm/vm_page.h')
| -rw-r--r-- | sys/vm/vm_page.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h index a2e67df..3610ae0 100644 --- a/sys/vm/vm_page.h +++ b/sys/vm/vm_page.h @@ -215,7 +215,8 @@ struct vm_page { #define PQ_INACTIVE (1 + 1*PQ_L2_SIZE) #define PQ_ACTIVE (2 + 1*PQ_L2_SIZE) #define PQ_CACHE (3 + 1*PQ_L2_SIZE) -#define PQ_COUNT (3 + 2*PQ_L2_SIZE) +#define PQ_HOLD (3 + 2*PQ_L2_SIZE) +#define PQ_COUNT (4 + 2*PQ_L2_SIZE) #else #define PQ_NONE PQ_COUNT #define PQ_FREE 0 |
