aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/mm_types.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/mm_types.h')
-rw-r--r--include/linux/mm_types.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 934261099975..423da79877e6 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -147,7 +147,10 @@ struct page {
* system if PG_buddy is set.
*/
#if USE_SPLIT_PTE_PTLOCKS
- spinlock_t ptl;
+ unsigned long ptl; /* It's spinlock_t if it fits to long,
+ * otherwise it's pointer to dynamicaly
+ * allocated spinlock_t.
+ */
#endif
struct kmem_cache *slab_cache; /* SL[AU]B: Pointer to slab */
struct page *first_page; /* Compound tail pages */