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authorIlya Dryomov <idryomov@gmail.com>2020-05-29 20:31:37 +0200
committerIlya Dryomov <idryomov@gmail.com>2020-06-01 23:32:35 +0200
commitd3798acc094c8ff2406e9acc7a9b2c09da994616 (patch)
tree5ada40171a9d15868733c648b3fe6825e045fd07 /include/linux/ceph/rados.h
parent8ad44d5e0d1eda7e4a0ed382174888476dc81789 (diff)
downloadlinux-next-d3798acc094c8ff2406e9acc7a9b2c09da994616.tar.gz
libceph: support for alloc hint flags
Allow indicating future I/O pattern via flags. This is supported since Kraken (and bluestore persists flags together with expected_object_size and expected_write_size). Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Diffstat (limited to 'include/linux/ceph/rados.h')
-rw-r--r--include/linux/ceph/rados.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h
index 88ed3c5c04c5..3a518fd0eaad 100644
--- a/include/linux/ceph/rados.h
+++ b/include/linux/ceph/rados.h
@@ -465,6 +465,19 @@ enum {
const char *ceph_osd_watch_op_name(int o);
enum {
+ CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_WRITE = 1,
+ CEPH_OSD_ALLOC_HINT_FLAG_RANDOM_WRITE = 2,
+ CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_READ = 4,
+ CEPH_OSD_ALLOC_HINT_FLAG_RANDOM_READ = 8,
+ CEPH_OSD_ALLOC_HINT_FLAG_APPEND_ONLY = 16,
+ CEPH_OSD_ALLOC_HINT_FLAG_IMMUTABLE = 32,
+ CEPH_OSD_ALLOC_HINT_FLAG_SHORTLIVED = 64,
+ CEPH_OSD_ALLOC_HINT_FLAG_LONGLIVED = 128,
+ CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE = 256,
+ CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE = 512,
+};
+
+enum {
CEPH_OSD_BACKOFF_OP_BLOCK = 1,
CEPH_OSD_BACKOFF_OP_ACK_BLOCK = 2,
CEPH_OSD_BACKOFF_OP_UNBLOCK = 3,
@@ -517,6 +530,7 @@ struct ceph_osd_op {
struct {
__le64 expected_object_size;
__le64 expected_write_size;
+ __le32 flags; /* CEPH_OSD_OP_ALLOC_HINT_FLAG_* */
} __attribute__ ((packed)) alloc_hint;
struct {
__le64 snapid;