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/mman.h b/include/linux/mman.h
new file mode 100644
index 0000000..18a5689
--- /dev/null
+++ b/include/linux/mman.h
@@ -0,0 +1,67 @@
+#ifndef _LINUX_MMAN_H
+#define _LINUX_MMAN_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+
+#include <asm/atomic.h>
+#include <asm/mman.h>
+
+#define MREMAP_MAYMOVE 1
+#define MREMAP_FIXED 2
+
+#define OVERCOMMIT_GUESS 0
+#define OVERCOMMIT_ALWAYS 1
+#define OVERCOMMIT_NEVER 2
+extern int sysctl_overcommit_memory;
+extern int sysctl_overcommit_ratio;
+extern atomic_t vm_committed_space;
+
+#ifdef CONFIG_SMP
+extern void vm_acct_memory(long pages);
+#else
+static inline void vm_acct_memory(long pages)
+{
+ atomic_add(pages, &vm_committed_space);
+}
+#endif
+
+static inline void vm_unacct_memory(long pages)
+{
+ vm_acct_memory(-pages);
+}
+
+/*
+ * Optimisation macro. It is equivalent to:
+ * (x & bit1) ? bit2 : 0
+ * but this version is faster.
+ * ("bit1" and "bit2" must be single bits)
+ */
+#define _calc_vm_trans(x, bit1, bit2) \
+ ((bit1) <= (bit2) ? ((x) & (bit1)) * ((bit2) / (bit1)) \
+ : ((x) & (bit1)) / ((bit1) / (bit2)))
+
+/*
+ * Combine the mmap "prot" argument into "vm_flags" used internally.
+ */
+static inline unsigned long
+calc_vm_prot_bits(unsigned long prot)
+{
+ return _calc_vm_trans(prot, PROT_READ, VM_READ ) |
+ _calc_vm_trans(prot, PROT_WRITE, VM_WRITE) |
+ _calc_vm_trans(prot, PROT_EXEC, VM_EXEC );
+}
+
+/*
+ * Combine the mmap "flags" argument into "vm_flags" used internally.
+ */
+static inline unsigned long
+calc_vm_flag_bits(unsigned long flags)
+{
+ return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) |
+ _calc_vm_trans(flags, MAP_DENYWRITE, VM_DENYWRITE ) |
+ _calc_vm_trans(flags, MAP_EXECUTABLE, VM_EXECUTABLE) |
+ _calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED );
+}
+
+#endif /* _LINUX_MMAN_H */