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-rw-r--r--include/linux/compaction.h5
-rw-r--r--include/linux/sched.h2
2 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index e94776496049..7bf0c521db63 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -80,6 +80,11 @@ static inline unsigned long compact_gap(unsigned int order)
return 2UL << order;
}
+static inline int current_is_kcompactd(void)
+{
+ return current->flags & PF_KCOMPACTD;
+}
+
#ifdef CONFIG_COMPACTION
extern unsigned int extfrag_for_order(struct zone *zone, unsigned int order);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9632e3318e0d..9c15365a30c0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1701,7 +1701,7 @@ extern struct pid *cad_pid;
#define PF_USED_MATH 0x00002000 /* If unset the fpu must be initialized before use */
#define PF_USER_WORKER 0x00004000 /* Kernel thread cloned from userspace thread */
#define PF_NOFREEZE 0x00008000 /* This thread should not be frozen */
-#define PF__HOLE__00010000 0x00010000
+#define PF_KCOMPACTD 0x00010000 /* I am kcompactd */
#define PF_KSWAPD 0x00020000 /* I am kswapd */
#define PF_MEMALLOC_NOFS 0x00040000 /* All allocations inherit GFP_NOFS. See memalloc_nfs_save() */
#define PF_MEMALLOC_NOIO 0x00080000 /* All allocations inherit GFP_NOIO. See memalloc_noio_save() */