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authorDavid Rientjes <rientjes@google.com>2008-04-28 13:12:23 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 19:58:19 +0400
commita3b51e0142d1be156ac697eaadadd6cfbb7ba32b (patch)
treeda9e527316f112c09f0bc16553c64e3c87125c82 /include/linux/shmem_fs.h
parent1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b (diff)
downloadlinux-a3b51e0142d1be156ac697eaadadd6cfbb7ba32b.tar.xz
mempolicy: convert MPOL constants to enum
The mempolicy mode constants, MPOL_DEFAULT, MPOL_PREFERRED, MPOL_BIND, and MPOL_INTERLEAVE, are better declared as part of an enum since they are sequentially numbered and cannot be combined. The policy member of struct mempolicy is also converted from type short to type unsigned short. A negative policy does not have any legitimate meaning, so it is possible to change its type in preparation for adding optional mode flags later. The equivalent member of struct shmem_sb_info is also changed from int to unsigned short. For compatibility, the policy formal to get_mempolicy() remains as a pointer to an int: int get_mempolicy(int *policy, unsigned long *nmask, unsigned long maxnode, unsigned long addr, unsigned long flags); although the only possible values is the range of type unsigned short. Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/shmem_fs.h')
-rw-r--r--include/linux/shmem_fs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 8d5fb36ea047..639a4070708e 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -34,7 +34,7 @@ struct shmem_sb_info {
uid_t uid; /* Mount uid for root directory */
gid_t gid; /* Mount gid for root directory */
mode_t mode; /* Mount mode for root directory */
- int policy; /* Default NUMA memory alloc policy */
+ unsigned short policy; /* Default NUMA memory alloc policy */
nodemask_t policy_nodes; /* nodemask for preferred and bind */
};