dlm: do not byteswap rcom_lock

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Teigland <teigland@redhat.com>

4 files changed, 39 insertions, 76 deletions

diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 65499ceaa516..e73b988995f5 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -416,21 +416,21 @@ struct rcom_config {
 };
 
 struct rcom_lock {
-        uint32_t                rl_ownpid;
-        uint32_t                rl_lkid;
-        uint32_t                rl_remid;
-        uint32_t                rl_parent_lkid;
-        uint32_t                rl_parent_remid;
-        uint32_t                rl_exflags;
-        uint32_t                rl_flags;
-        uint32_t                rl_lvbseq;
-        int                     rl_result;
+        __le32                  rl_ownpid;
+        __le32                  rl_lkid;
+        __le32                  rl_remid;
+        __le32                  rl_parent_lkid;
+        __le32                  rl_parent_remid;
+        __le32                  rl_exflags;
+        __le32                  rl_flags;
+        __le32                  rl_lvbseq;
+        __le32                  rl_result;
         int8_t                  rl_rqmode;
         int8_t                  rl_grmode;
         int8_t                  rl_status;
         int8_t                  rl_asts;
-        uint16_t                rl_wait_type;
-        uint16_t                rl_namelen;
+        __le16                  rl_wait_type;
+        __le16                  rl_namelen;
         char                    rl_name[DLM_RESNAME_MAXLEN];
         char                    rl_lvb[0];
 };
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 2a28048252ed..75176b58ae04 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -4273,12 +4273,12 @@ static int receive_rcom_lock_args(struct dlm_ls *ls, struct dlm_lkb *lkb,
         int lvblen;
 
         lkb->lkb_nodeid = rc->rc_header.h_nodeid;
-        lkb->lkb_ownpid = rl->rl_ownpid;
-        lkb->lkb_remid = rl->rl_lkid;
-        lkb->lkb_exflags = rl->rl_exflags;
-        lkb->lkb_flags = rl->rl_flags & 0x0000FFFF;
+        lkb->lkb_ownpid = le32_to_cpu(rl->rl_ownpid);
+        lkb->lkb_remid = le32_to_cpu(rl->rl_lkid);
+        lkb->lkb_exflags = le32_to_cpu(rl->rl_exflags);
+        lkb->lkb_flags = le32_to_cpu(rl->rl_flags) & 0x0000FFFF;
         lkb->lkb_flags |= DLM_IFL_MSTCPY;
-        lkb->lkb_lvbseq = rl->rl_lvbseq;
+        lkb->lkb_lvbseq = le32_to_cpu(rl->rl_lvbseq);
         lkb->lkb_rqmode = rl->rl_rqmode;
         lkb->lkb_grmode = rl->rl_grmode;
         /* don't set lkb_status because add_lkb wants to itself */
@@ -4299,7 +4299,8 @@ static int receive_rcom_lock_args(struct dlm_ls *ls, struct dlm_lkb *lkb,
            The real granted mode of these converting locks cannot be determined
            until all locks have been rebuilt on the rsb (recover_conversion) */
 
-        if (rl->rl_wait_type == DLM_MSG_CONVERT && middle_conversion(lkb)) {
+        if (rl->rl_wait_type == cpu_to_le16(DLM_MSG_CONVERT) &&
+            middle_conversion(lkb)) {
                 rl->rl_status = DLM_LKSTS_CONVERT;
                 lkb->lkb_grmode = DLM_LOCK_IV;
                 rsb_set_flag(r, RSB_RECOVER_CONVERT);
@@ -4326,13 +4327,14 @@ int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
                 goto out;
         }
 
-        error = find_rsb(ls, rl->rl_name, rl->rl_namelen, R_MASTER, &r);
+        error = find_rsb(ls, rl->rl_name, le16_to_cpu(rl->rl_namelen),
+                         R_MASTER, &r);
         if (error)
                 goto out;
 
         lock_rsb(r);
 
-        lkb = search_remid(r, rc->rc_header.h_nodeid, rl->rl_lkid);
+        lkb = search_remid(r, rc->rc_header.h_nodeid, le32_to_cpu(rl->rl_lkid));
         if (lkb) {
                 error = -EEXIST;
                 goto out_remid;
@@ -4355,15 +4357,16 @@ int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
  out_remid:
         /* this is the new value returned to the lock holder for
            saving in its process-copy lkb */
-        rl->rl_remid = lkb->lkb_id;
+        rl->rl_remid = cpu_to_le32(lkb->lkb_id);
 
  out_unlock:
         unlock_rsb(r);
         put_rsb(r);
  out:
         if (error)
-                log_debug(ls, "recover_master_copy %d %x", error, rl->rl_lkid);
-        rl->rl_result = error;
+                log_debug(ls, "recover_master_copy %d %x", error,
+                          le32_to_cpu(rl->rl_lkid));
+        rl->rl_result = cpu_to_le32(error);
         return error;
 }
 
@@ -4374,15 +4377,16 @@ int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
         struct dlm_lkb *lkb;
         int error;
 
-        error = find_lkb(ls, rl->rl_lkid, &lkb);
+        error = find_lkb(ls, le32_to_cpu(rl->rl_lkid), &lkb);
         if (error) {
-                log_error(ls, "recover_process_copy no lkid %x", rl->rl_lkid);
+                log_error(ls, "recover_process_copy no lkid %x",
+                                le32_to_cpu(rl->rl_lkid));
                 return error;
         }
 
         DLM_ASSERT(is_process_copy(lkb), dlm_print_lkb(lkb););
 
-        error = rl->rl_result;
+        error = le32_to_cpu(rl->rl_result);
 
         r = lkb->lkb_resource;
         hold_rsb(r);
@@ -4401,7 +4405,7 @@ int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
                 log_debug(ls, "master copy exists %x", lkb->lkb_id);
                 /* fall through */
         case 0:
-                lkb->lkb_remid = rl->rl_remid;
+                lkb->lkb_remid = le32_to_cpu(rl->rl_remid);
                 break;
         default:
                 log_error(ls, "dlm_recover_process_copy unknown error %d %x",
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index 026824cd3acb..86c1ab99208e 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -299,22 +299,22 @@ static void pack_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb,
 {
         memset(rl, 0, sizeof(*rl));
 
-        rl->rl_ownpid = lkb->lkb_ownpid;
-        rl->rl_lkid = lkb->lkb_id;
-        rl->rl_exflags = lkb->lkb_exflags;
-        rl->rl_flags = lkb->lkb_flags;
-        rl->rl_lvbseq = lkb->lkb_lvbseq;
+        rl->rl_ownpid = cpu_to_le32(lkb->lkb_ownpid);
+        rl->rl_lkid = cpu_to_le32(lkb->lkb_id);
+        rl->rl_exflags = cpu_to_le32(lkb->lkb_exflags);
+        rl->rl_flags = cpu_to_le32(lkb->lkb_flags);
+        rl->rl_lvbseq = cpu_to_le32(lkb->lkb_lvbseq);
         rl->rl_rqmode = lkb->lkb_rqmode;
         rl->rl_grmode = lkb->lkb_grmode;
         rl->rl_status = lkb->lkb_status;
-        rl->rl_wait_type = lkb->lkb_wait_type;
+        rl->rl_wait_type = cpu_to_le16(lkb->lkb_wait_type);
 
         if (lkb->lkb_bastaddr)
                 rl->rl_asts |= AST_BAST;
         if (lkb->lkb_astaddr)
                 rl->rl_asts |= AST_COMP;
 
-        rl->rl_namelen = r->res_length;
+        rl->rl_namelen = cpu_to_le16(r->res_length);
         memcpy(rl->rl_name, r->res_name, r->res_length);
 
         /* FIXME: might we have an lvb without DLM_LKF_VALBLK set ?
diff --git a/fs/dlm/util.c b/fs/dlm/util.c
index 4d9c1f4e1bd1..d3ed6da0b650 100644
--- a/fs/dlm/util.c
+++ b/fs/dlm/util.c
@@ -131,36 +131,6 @@ void dlm_message_in(struct dlm_message *ms)
         ms->m_result            = from_dlm_errno(le32_to_cpu(ms->m_result));
 }
 
-static void rcom_lock_out(struct rcom_lock *rl)
-{
-        rl->rl_ownpid           = cpu_to_le32(rl->rl_ownpid);
-        rl->rl_lkid             = cpu_to_le32(rl->rl_lkid);
-        rl->rl_remid            = cpu_to_le32(rl->rl_remid);
-        rl->rl_parent_lkid      = cpu_to_le32(rl->rl_parent_lkid);
-        rl->rl_parent_remid     = cpu_to_le32(rl->rl_parent_remid);
-        rl->rl_exflags          = cpu_to_le32(rl->rl_exflags);
-        rl->rl_flags            = cpu_to_le32(rl->rl_flags);
-        rl->rl_lvbseq           = cpu_to_le32(rl->rl_lvbseq);
-        rl->rl_result           = cpu_to_le32(rl->rl_result);
-        rl->rl_wait_type        = cpu_to_le16(rl->rl_wait_type);
-        rl->rl_namelen          = cpu_to_le16(rl->rl_namelen);
-}
-
-static void rcom_lock_in(struct rcom_lock *rl)
-{
-        rl->rl_ownpid           = le32_to_cpu(rl->rl_ownpid);
-        rl->rl_lkid             = le32_to_cpu(rl->rl_lkid);
-        rl->rl_remid            = le32_to_cpu(rl->rl_remid);
-        rl->rl_parent_lkid      = le32_to_cpu(rl->rl_parent_lkid);
-        rl->rl_parent_remid     = le32_to_cpu(rl->rl_parent_remid);
-        rl->rl_exflags          = le32_to_cpu(rl->rl_exflags);
-        rl->rl_flags            = le32_to_cpu(rl->rl_flags);
-        rl->rl_lvbseq           = le32_to_cpu(rl->rl_lvbseq);
-        rl->rl_result           = le32_to_cpu(rl->rl_result);
-        rl->rl_wait_type        = le16_to_cpu(rl->rl_wait_type);
-        rl->rl_namelen          = le16_to_cpu(rl->rl_namelen);
-}
-
 static void rcom_config_out(struct rcom_config *rf)
 {
         rf->rf_lvblen           = cpu_to_le32(rf->rf_lvblen);
@@ -185,17 +155,12 @@ void dlm_rcom_out(struct dlm_rcom *rc)
         rc->rc_seq              = cpu_to_le64(rc->rc_seq);
         rc->rc_seq_reply        = cpu_to_le64(rc->rc_seq_reply);
 
-        if ((type == DLM_RCOM_LOCK) || (type == DLM_RCOM_LOCK_REPLY))
-                rcom_lock_out((struct rcom_lock *) rc->rc_buf);
-
-        else if (type == DLM_RCOM_STATUS_REPLY)
+        if (type == DLM_RCOM_STATUS_REPLY)
                 rcom_config_out((struct rcom_config *) rc->rc_buf);
 }
 
 void dlm_rcom_in(struct dlm_rcom *rc)
 {
-        int type;
-
         header_in(&rc->rc_header);
 
         rc->rc_type             = le32_to_cpu(rc->rc_type);
@@ -204,12 +169,6 @@ void dlm_rcom_in(struct dlm_rcom *rc)
         rc->rc_seq              = le64_to_cpu(rc->rc_seq);
         rc->rc_seq_reply        = le64_to_cpu(rc->rc_seq_reply);
 
-        type = rc->rc_type;
-
-        if ((type == DLM_RCOM_LOCK) || (type == DLM_RCOM_LOCK_REPLY))
-                rcom_lock_in((struct rcom_lock *) rc->rc_buf);
-
-        else if (type == DLM_RCOM_STATUS_REPLY)
+        if (rc->rc_type == DLM_RCOM_STATUS_REPLY)
                 rcom_config_in((struct rcom_config *) rc->rc_buf);
 }
-