Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h
new file mode 100644
index 0000000..def32c5
--- /dev/null
+++ b/include/linux/pagevec.h
@@ -0,0 +1,85 @@
+/*
+ * include/linux/pagevec.h
+ *
+ * In many places it is efficient to batch an operation up against multiple
+ * pages. A pagevec is a multipage container which is used for that.
+ */
+
+/* 14 pointers + two long's align the pagevec structure to a power of two */
+#define PAGEVEC_SIZE 14
+
+struct page;
+struct address_space;
+
+struct pagevec {
+ unsigned long nr;
+ unsigned long cold;
+ struct page *pages[PAGEVEC_SIZE];
+};
+
+void __pagevec_release(struct pagevec *pvec);
+void __pagevec_release_nonlru(struct pagevec *pvec);
+void __pagevec_free(struct pagevec *pvec);
+void __pagevec_lru_add(struct pagevec *pvec);
+void __pagevec_lru_add_active(struct pagevec *pvec);
+void pagevec_strip(struct pagevec *pvec);
+unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping,
+ pgoff_t start, unsigned nr_pages);
+unsigned pagevec_lookup_tag(struct pagevec *pvec,
+ struct address_space *mapping, pgoff_t *index, int tag,
+ unsigned nr_pages);
+
+static inline void pagevec_init(struct pagevec *pvec, int cold)
+{
+ pvec->nr = 0;
+ pvec->cold = cold;
+}
+
+static inline void pagevec_reinit(struct pagevec *pvec)
+{
+ pvec->nr = 0;
+}
+
+static inline unsigned pagevec_count(struct pagevec *pvec)
+{
+ return pvec->nr;
+}
+
+static inline unsigned pagevec_space(struct pagevec *pvec)
+{
+ return PAGEVEC_SIZE - pvec->nr;
+}
+
+/*
+ * Add a page to a pagevec. Returns the number of slots still available.
+ */
+static inline unsigned pagevec_add(struct pagevec *pvec, struct page *page)
+{
+ pvec->pages[pvec->nr++] = page;
+ return pagevec_space(pvec);
+}
+
+
+static inline void pagevec_release(struct pagevec *pvec)
+{
+ if (pagevec_count(pvec))
+ __pagevec_release(pvec);
+}
+
+static inline void pagevec_release_nonlru(struct pagevec *pvec)
+{
+ if (pagevec_count(pvec))
+ __pagevec_release_nonlru(pvec);
+}
+
+static inline void pagevec_free(struct pagevec *pvec)
+{
+ if (pagevec_count(pvec))
+ __pagevec_free(pvec);
+}
+
+static inline void pagevec_lru_add(struct pagevec *pvec)
+{
+ if (pagevec_count(pvec))
+ __pagevec_lru_add(pvec);
+}