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authorMinchan Kim <minchan@kernel.org>2016-07-26 15:26:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-26 16:19:19 -0700
commitdd4123f324bbaec7618b677b7bce2b11aee9594e (patch)
treeccc798b953a7c1eaff8b53d01bc26ceb8e5940da /include
parent0db501f7a34c11d3b964205e5b6d00692a648035 (diff)
mm: fix build warnings in <linux/compaction.h>
Randy reported below build error. > In file included from ../include/linux/balloon_compaction.h:48:0, > from ../mm/balloon_compaction.c:11: > ../include/linux/compaction.h:237:51: warning: 'struct node' declared inside parameter list [enabled by default] > static inline int compaction_register_node(struct node *node) > ../include/linux/compaction.h:237:51: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] > ../include/linux/compaction.h:242:54: warning: 'struct node' declared inside parameter list [enabled by default] > static inline void compaction_unregister_node(struct node *node) > It was caused by non-lru page migration which needs compaction.h but compaction.h doesn't include any header to be standalone. I think proper header for non-lru page migration is migrate.h rather than compaction.h because migrate.h has already headers needed to work non-lru page migration indirectly like isolate_mode_t, migrate_mode MIGRATEPAGE_SUCCESS. [akpm@linux-foundation.org: revert mm-balloon-use-general-non-lru-movable-page-feature-fix.patch temp fix] Link: http://lkml.kernel.org/r/20160610003304.GE29779@bbox Signed-off-by: Minchan Kim <minchan@kernel.org> Reported-by: Randy Dunlap <rdunlap@infradead.org> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Gioh Kim <gi-oh.kim@profitbricks.com> Cc: Rafael Aquini <aquini@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/balloon_compaction.h3
-rw-r--r--include/linux/compaction.h16
-rw-r--r--include/linux/migrate.h15
3 files changed, 16 insertions, 18 deletions
diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
index 504bd724e6ab..79542b2698ec 100644
--- a/include/linux/balloon_compaction.h
+++ b/include/linux/balloon_compaction.h
@@ -45,8 +45,7 @@
#define _LINUX_BALLOON_COMPACTION_H
#include <linux/pagemap.h>
#include <linux/page-flags.h>
-#include <linux/node.h>
-#include <linux/compaction.h>
+#include <linux/migrate.h>
#include <linux/gfp.h>
#include <linux/err.h>
#include <linux/fs.h>
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index c6b47c861cea..1a02dab16646 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -54,9 +54,6 @@ enum compact_result {
struct alloc_context; /* in mm/internal.h */
#ifdef CONFIG_COMPACTION
-extern int PageMovable(struct page *page);
-extern void __SetPageMovable(struct page *page, struct address_space *mapping);
-extern void __ClearPageMovable(struct page *page);
extern int sysctl_compact_memory;
extern int sysctl_compaction_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos);
@@ -154,19 +151,6 @@ extern void kcompactd_stop(int nid);
extern void wakeup_kcompactd(pg_data_t *pgdat, int order, int classzone_idx);
#else
-static inline int PageMovable(struct page *page)
-{
- return 0;
-}
-static inline void __SetPageMovable(struct page *page,
- struct address_space *mapping)
-{
-}
-
-static inline void __ClearPageMovable(struct page *page)
-{
-}
-
static inline enum compact_result try_to_compact_pages(gfp_t gfp_mask,
unsigned int order, int alloc_flags,
const struct alloc_context *ac,
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 404fbfefeb33..ae8d475a9385 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -71,6 +71,21 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
#endif /* CONFIG_MIGRATION */
+#ifdef CONFIG_COMPACTION
+extern int PageMovable(struct page *page);
+extern void __SetPageMovable(struct page *page, struct address_space *mapping);
+extern void __ClearPageMovable(struct page *page);
+#else
+static inline int PageMovable(struct page *page) { return 0; };
+static inline void __SetPageMovable(struct page *page,
+ struct address_space *mapping)
+{
+}
+static inline void __ClearPageMovable(struct page *page)
+{
+}
+#endif
+
#ifdef CONFIG_NUMA_BALANCING
extern bool pmd_trans_migrating(pmd_t pmd);
extern int migrate_misplaced_page(struct page *page,