panic: add sysctl to dump all CPUs backtraces on oops event

[sfrench/cifs-2.6.git] / include / linux / gfp.h

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 4aba4c86c626c8509eb62ccf92bf196843878995..67a0774e080b9828c83c6dbea6e5591aa2273524 100644 (file)
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -110,6 +110,11 @@ struct vm_area_struct;
  * the caller guarantees the allocation will allow more memory to be freed
  * very shortly e.g. process exiting or swapping. Users either should
  * be the MM or co-ordinating closely with the VM (e.g. swap over NFS).
+ * Users of this flag have to be extremely careful to not deplete the reserve
+ * completely and implement a throttling mechanism which controls the
+ * consumption of the reserve based on the amount of freed memory.
+ * Usage of a pre-allocated pool (e.g. mempool) should be always considered
+ * before using this flag.
  *
  * %__GFP_NOMEMALLOC is used to explicitly forbid access to emergency reserves.
  * This takes precedence over the %__GFP_MEMALLOC flag if both are set.
@@ -307,7 +312,7 @@ struct vm_area_struct;
 #define GFP_MOVABLE_MASK (__GFP_RECLAIMABLE|__GFP_MOVABLE)
 #define GFP_MOVABLE_SHIFT 3
 
-static inline int gfpflags_to_migratetype(const gfp_t gfp_flags)
+static inline int gfp_migratetype(const gfp_t gfp_flags)
 {
        VM_WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
        BUILD_BUG_ON((1UL << GFP_MOVABLE_SHIFT) != ___GFP_MOVABLE);