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libceph: add CEPH_OSD_OP_ASSERT_VER support

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...and record the user_version in the reply in a new field in
ceph_osd_request, so we can populate the assert_ver appropriately.
Shuffle the fields a bit too so that the new field fits in an
existing hole on x86_64.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-and-tested-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Milind Changire <mchangir@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2022-08-25 09:31:05 -04:00 committed by Ilya Dryomov
parent 77cdb7e17e
commit 69dd3b3930
3 changed files with 14 additions and 1 deletions
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6
include/linux/ceph/osd_client.h
View file

@ -198,6 +198,9 @@ struct ceph_osd_req_op {
u32 src_fadvise_flags;
struct ceph_osd_data osd_data;
} copy_from;
struct {
u64 ver;
} assert_ver;
};
};
@ -252,6 +255,7 @@ struct ceph_osd_request {
struct ceph_osd_client *r_osdc;
struct kref r_kref;
bool r_mempool;
bool r_linger; /* don't resend on failure */
struct completion r_completion; /* private to osd_client.c */
ceph_osdc_callback_t r_callback;
@ -264,9 +268,9 @@ struct ceph_osd_request {
struct ceph_snap_context *r_snapc; /* for writes */
struct timespec64 r_mtime; /* ditto */
u64 r_data_offset; /* ditto */
bool r_linger; /* don't resend on failure */
/* internal */
u64 r_version; /* data version sent in reply */
unsigned long r_stamp; /* jiffies, send or check time */
unsigned long r_start_stamp; /* jiffies */
ktime_t r_start_latency; /* ktime_t */

4
include/linux/ceph/rados.h
View file

@ -523,6 +523,10 @@ struct ceph_osd_op {
struct {
__le64 cookie;
} __attribute__ ((packed)) notify;
struct {
__le64 unused;
__le64 ver;
} __attribute__ ((packed)) assert_ver;
struct {
__le64 offset, length;
__le64 src_offset;

5
net/ceph/osd_client.c
View file

@ -1048,6 +1048,10 @@ static u32 osd_req_encode_op(struct ceph_osd_op *dst,
dst->copy_from.src_fadvise_flags =
cpu_to_le32(src->copy_from.src_fadvise_flags);
break;
case CEPH_OSD_OP_ASSERT_VER:
dst->assert_ver.unused = cpu_to_le64(0);
dst->assert_ver.ver = cpu_to_le64(src->assert_ver.ver);
break;
default:
pr_err("unsupported osd opcode %s\n",
ceph_osd_op_name(src->op));
@ -3859,6 +3863,7 @@ static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
* one (type of) reply back.
*/
WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK));
req->r_version = m.user_version;
req->r_result = m.result ?: data_len;
finish_request(req);
mutex_unlock(&osd->lock);