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SELinux: Reduce max avtab size to avoid page allocation failures 

Reduce MAX_AVTAB_HASH_BITS so that the avtab allocation is an order 2
allocation rather than an order 4 allocation on x86_64.  This
addresses reports of page allocation failures:
http://marc.info/?l=selinux&m=126757230625867&w=2
https://bugzilla.redhat.com/show_bug.cgi?id=570433

Reported-by:  Russell Coker <russell@coker.com.au>
Signed-off-by:  Stephen D. Smalley <sds@tycho.nsa.gov>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Stephen Smalley 2010-03-15 10:42:11 -04:00 committed by James Morris
parent a19c5bbefb
commit 77c160e779
1 changed files with 1 additions and 1 deletions
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2
security/selinux/ss/avtab.h
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@ -82,7 +82,7 @@ struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified
void avtab_cache_init(void); void avtab_cache_init(void);
void avtab_cache_destroy(void); void avtab_cache_destroy(void);
#define MAX_AVTAB_HASH_BITS 13 #define MAX_AVTAB_HASH_BITS 11
#define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS) #define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS)
#define MAX_AVTAB_HASH_MASK (MAX_AVTAB_HASH_BUCKETS-1) #define MAX_AVTAB_HASH_MASK (MAX_AVTAB_HASH_BUCKETS-1)
#define MAX_AVTAB_SIZE MAX_AVTAB_HASH_BUCKETS #define MAX_AVTAB_SIZE MAX_AVTAB_HASH_BUCKETS