Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem:
  xen: cleancache shim to Xen Transcendent Memory
  ocfs2: add cleancache support
  ext4: add cleancache support
  btrfs: add cleancache support
  ext3: add cleancache support
  mm/fs: add hooks to support cleancache
  mm: cleancache core ops functions and config
  fs: add field to superblock to support cleancache
  mm/fs: cleancache documentation

Fix up trivial conflict in fs/btrfs/extent_io.c due to includes

1 files changed, 22 insertions, 0 deletions

diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index b33257bc7e83..70213b4515eb 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -58,6 +58,7 @@
 #define __HYPERVISOR_event_channel_op     32
 #define __HYPERVISOR_physdev_op           33
 #define __HYPERVISOR_hvm_op               34
+#define __HYPERVISOR_tmem_op              38
 
 /* Architecture-specific hypercall definitions. */
 #define __HYPERVISOR_arch_0               48
@@ -461,6 +462,27 @@ typedef uint8_t xen_domain_handle_t[16];
 #define __mk_unsigned_long(x) x ## UL
 #define mk_unsigned_long(x) __mk_unsigned_long(x)
 
+#define TMEM_SPEC_VERSION 1
+
+struct tmem_op {
+        uint32_t cmd;
+        int32_t pool_id;
+        union {
+                struct {  /* for cmd == TMEM_NEW_POOL */
+                        uint64_t uuid[2];
+                        uint32_t flags;
+                } new;
+                struct {
+                        uint64_t oid[3];
+                        uint32_t index;
+                        uint32_t tmem_offset;
+                        uint32_t pfn_offset;
+                        uint32_t len;
+                        GUEST_HANDLE(void) gmfn; /* guest machine page frame */
+                } gen;
+        } u;
+};
+
 #else /* __ASSEMBLY__ */
 
 /* In assembly code we cannot use C numeric constant suffixes. */