diff options
| author | Mohan Srinivasan <mohans@FreeBSD.org> | 2007-01-25 01:05:23 +0000 |
|---|---|---|
| committer | Mohan Srinivasan <mohans@FreeBSD.org> | 2007-01-25 01:05:23 +0000 |
| commit | 6c125b8df6750dba0aa916ee7779fe5b20bf63b8 (patch) | |
| tree | 29d5e3c67fe7103c5fe9363f82111c4d5203c0f7 /sys/vm/uma.h | |
| parent | fd7b77628d10ab8e30adb344626665cd6ff61155 (diff) | |
| download | src-6c125b8df6750dba0aa916ee7779fe5b20bf63b8.tar.gz src-6c125b8df6750dba0aa916ee7779fe5b20bf63b8.zip | |
Fix for problems that occur when all mbuf clusters migrate to the mbuf packet
zone. Cluster allocations fail when this happens. Also processes that may have
blocked on cluster allocations will never be woken up. Thanks to rwatson for
an overview of the issue and pointers to the mbuma paper and his tool to dump
out UMA zones.
Reviewed by: andre@
Notes
Notes:
svn path=/head/; revision=166213
Diffstat (limited to 'sys/vm/uma.h')
| -rw-r--r-- | sys/vm/uma.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/vm/uma.h b/sys/vm/uma.h index 08a55d675e88..002717723369 100644 --- a/sys/vm/uma.h +++ b/sys/vm/uma.h @@ -48,6 +48,8 @@ struct uma_zone; /* Opaque type used as a handle to the zone */ typedef struct uma_zone * uma_zone_t; +void zone_drain(uma_zone_t); + /* * Item constructor * @@ -518,6 +520,7 @@ u_int32_t *uma_find_refcnt(uma_zone_t zone, void *item); * Non-zero if zone is exhausted. */ int uma_zone_exhausted(uma_zone_t zone); +int uma_zone_exhausted_nolock(uma_zone_t zone); /* * Exported statistics structures to be used by user space monitoring tools. |