linux/ipc
Lee Schermerhorn ae4d8c16aa mempolicy: fixup Fallback for Default Shmem Policy
get_vma_policy() is not handling fallback to task policy correctly when the
get_policy() vm_op returns NULL.  The NULL overwrites the 'pol' variable that
was holding the fallback task mempolicy.  So, it was falling back directly to
system default policy.

Fix get_vma_policy() to use only non-NULL policy returned from the vma
get_policy op.

shm_get_policy() was falling back to current task's mempolicy if the "backing
file system" [tmpfs vs hugetlbfs] does not support the get_policy vm_op and
the vma policy is null.  This is incorrect for show_numa_maps() which is
likely querying the numa_maps of some task other than current.  Remove this
fallback.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:24 -07:00
..
compat_mq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compat.c fix logic error in ipc compat semctl() 2007-07-06 10:23:43 -07:00
ipc_sysctl.c namespaces: move the IPC namespace under IPC_NS option 2008-02-08 09:22:23 -08:00
Makefile namespaces: move the IPC namespace under IPC_NS option 2008-02-08 09:22:23 -08:00
mqueue.c [PATCH] r/o bind mounts: elevate write count for open()s 2008-04-19 00:29:25 -04:00
msg.c IPC: consolidate sem_exit_ns(), msg_exit_ns() and shm_exit_ns() 2008-02-08 09:22:26 -08:00
msgutil.c [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
namespace.c IPC: consolidate sem_exit_ns(), msg_exit_ns() and shm_exit_ns() 2008-02-08 09:22:26 -08:00
sem.c IPC: consolidate sem_exit_ns(), msg_exit_ns() and shm_exit_ns() 2008-02-08 09:22:26 -08:00
shm.c mempolicy: fixup Fallback for Default Shmem Policy 2008-04-28 08:58:24 -07:00
util.c IPC: make struct ipc_ids static in ipc_namespace 2008-02-08 09:22:26 -08:00
util.h IPC: make struct ipc_ids static in ipc_namespace 2008-02-08 09:22:26 -08:00