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Diffstat (limited to 'include/linux/pageblock-flags.h')
-rw-r--r--include/linux/pageblock-flags.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h
index 19ef95d293ae..be655e4a2a75 100644
--- a/include/linux/pageblock-flags.h
+++ b/include/linux/pageblock-flags.h
@@ -30,6 +30,9 @@ enum pageblock_bits {
PB_migrate,
PB_migrate_end = PB_migrate + 3 - 1,
/* 3 bits required for migrate types */
+#ifdef CONFIG_COMPACTION
+ PB_migrate_skip,/* If set the block is skipped by compaction */
+#endif /* CONFIG_COMPACTION */
NR_PAGEBLOCK_BITS
};
@@ -65,10 +68,22 @@ unsigned long get_pageblock_flags_group(struct page *page,
void set_pageblock_flags_group(struct page *page, unsigned long flags,
int start_bitidx, int end_bitidx);
+#ifdef CONFIG_COMPACTION
+#define get_pageblock_skip(page) \
+ get_pageblock_flags_group(page, PB_migrate_skip, \
+ PB_migrate_skip)
+#define clear_pageblock_skip(page) \
+ set_pageblock_flags_group(page, 0, PB_migrate_skip, \
+ PB_migrate_skip)
+#define set_pageblock_skip(page) \
+ set_pageblock_flags_group(page, 1, PB_migrate_skip, \
+ PB_migrate_skip)
+#endif /* CONFIG_COMPACTION */
+
#define get_pageblock_flags(page) \
- get_pageblock_flags_group(page, 0, NR_PAGEBLOCK_BITS-1)
+ get_pageblock_flags_group(page, 0, PB_migrate_end)
#define set_pageblock_flags(page, flags) \
set_pageblock_flags_group(page, flags, \
- 0, NR_PAGEBLOCK_BITS-1)
+ 0, PB_migrate_end)
#endif /* PAGEBLOCK_FLAGS_H */