libceph: support the RADOS copy-from operation

[sfrench/cifs-2.6.git] / include / linux / ceph / rados.h

diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h
index f1988387c5ad03882decfa12f444f250fe905134..3eb0e55665b4c5344a04d652b42307219d6589c0 100644 (file)
--- a/include/linux/ceph/rados.h
+++ b/include/linux/ceph/rados.h
@@ -410,6 +410,14 @@ enum {
 enum {
        CEPH_OSD_OP_FLAG_EXCL = 1,      /* EXCL object create */
        CEPH_OSD_OP_FLAG_FAILOK = 2,    /* continue despite failure */
+       CEPH_OSD_OP_FLAG_FADVISE_RANDOM     = 0x4, /* the op is random */
+       CEPH_OSD_OP_FLAG_FADVISE_SEQUENTIAL = 0x8, /* the op is sequential */
+       CEPH_OSD_OP_FLAG_FADVISE_WILLNEED   = 0x10,/* data will be accessed in
+                                                     the near future */
+       CEPH_OSD_OP_FLAG_FADVISE_DONTNEED   = 0x20,/* data will not be accessed
+                                                     in the near future */
+       CEPH_OSD_OP_FLAG_FADVISE_NOCACHE    = 0x40,/* data will be accessed only
+                                                     once by this client */
 };
 
 #define EOLDSNAPC    ERESTART  /* ORDERSNAP flag set; writer has old snapc*/
@@ -431,6 +439,15 @@ enum {
        CEPH_OSD_CMPXATTR_MODE_U64    = 2
 };
 
+enum {
+       CEPH_OSD_COPY_FROM_FLAG_FLUSH = 1,       /* part of a flush operation */
+       CEPH_OSD_COPY_FROM_FLAG_IGNORE_OVERLAY = 2, /* ignore pool overlay */
+       CEPH_OSD_COPY_FROM_FLAG_IGNORE_CACHE = 4,   /* ignore osd cache logic */
+       CEPH_OSD_COPY_FROM_FLAG_MAP_SNAP_CLONE = 8, /* map snap direct to
+                                                    * cloneid */
+       CEPH_OSD_COPY_FROM_FLAG_RWORDERED = 16,     /* order with write */
+};
+
 enum {
        CEPH_OSD_WATCH_OP_UNWATCH = 0,
        CEPH_OSD_WATCH_OP_LEGACY_WATCH = 1,
@@ -497,6 +514,17 @@ struct ceph_osd_op {
                        __le64 expected_object_size;
                        __le64 expected_write_size;
                } __attribute__ ((packed)) alloc_hint;
+               struct {
+                       __le64 snapid;
+                       __le64 src_version;
+                       __u8 flags; /* CEPH_OSD_COPY_FROM_FLAG_* */
+                       /*
+                        * CEPH_OSD_OP_FLAG_FADVISE_*: fadvise flags
+                        * for src object, flags for dest object are in
+                        * ceph_osd_op::flags.
+                        */
+                       __le32 src_fadvise_flags;
+               } __attribute__ ((packed)) copy_from;
        };
        __le32 payload_len;
 } __attribute__ ((packed));