This is a note to let you know that I've just added the patch titled
libceph: clean up con flags
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
0098-libceph-clean-up-con-flags.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From ecbcf07ec09575e41ebc9194bfc353773477fcd0 Mon Sep 17 00:00:00 2001
From: Sage Weil <[email protected]>
Date: Fri, 20 Jul 2012 17:29:55 -0700
Subject: libceph: clean up con flags
From: Sage Weil <[email protected]>
(cherry picked from commit 4a8616920860920abaa51193146fe36b38ef09aa)
Rename flags with CON_FLAG prefix, move the definitions into the c file,
and (better) document their meaning.
Signed-off-by: Sage Weil <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
include/linux/ceph/messenger.h | 10 ------
net/ceph/messenger.c | 62 +++++++++++++++++++++++------------------
2 files changed, 36 insertions(+), 36 deletions(-)
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -107,16 +107,6 @@ struct ceph_msg_pos {
#define MAX_DELAY_INTERVAL (5 * 60 * HZ)
/*
- * ceph_connection flag bits
- */
-
-#define LOSSYTX 0 /* we can close channel or drop messages on errors
*/
-#define KEEPALIVE_PENDING 3
-#define WRITE_PENDING 4 /* we have data ready to send */
-#define SOCK_CLOSED 11 /* socket state changed to closed */
-#define BACKOFF 15
-
-/*
* A single connection with another host.
*
* We maintain a queue of outgoing messages, and some session state to
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -87,6 +87,15 @@
#define CON_STATE_OPEN 5 /* -> STANDBY, CLOSED */
#define CON_STATE_STANDBY 6 /* -> PREOPEN, CLOSED */
+/*
+ * ceph_connection flag bits
+ */
+#define CON_FLAG_LOSSYTX 0 /* we can close channel or drop
+ * messages on errors */
+#define CON_FLAG_KEEPALIVE_PENDING 1 /* we need to send a keepalive */
+#define CON_FLAG_WRITE_PENDING 2 /* we have data ready to send */
+#define CON_FLAG_SOCK_CLOSED 3 /* socket state changed to closed */
+#define CON_FLAG_BACKOFF 4 /* need to retry queuing delayed work */
/* static tag bytes (protocol control messages) */
static char tag_msg = CEPH_MSGR_TAG_MSG;
@@ -288,7 +297,7 @@ static void ceph_sock_write_space(struct
* buffer. See net/ipv4/tcp_input.c:tcp_check_space()
* and net/core/stream.c:sk_stream_write_space().
*/
- if (test_bit(WRITE_PENDING, &con->flags)) {
+ if (test_bit(CON_FLAG_WRITE_PENDING, &con->flags)) {
if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk)) {
dout("%s %p queueing write work\n", __func__, con);
clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
@@ -313,7 +322,7 @@ static void ceph_sock_state_change(struc
case TCP_CLOSE_WAIT:
dout("%s TCP_CLOSE_WAIT\n", __func__);
con_sock_state_closing(con);
- set_bit(SOCK_CLOSED, &con->flags);
+ set_bit(CON_FLAG_SOCK_CLOSED, &con->flags);
queue_con(con);
break;
case TCP_ESTABLISHED:
@@ -449,12 +458,12 @@ static int con_close_socket(struct ceph_
con->sock = NULL;
/*
- * Forcibly clear the SOCK_CLOSE flag. It gets set
+ * Forcibly clear the SOCK_CLOSED flag. It gets set
* independent of the connection mutex, and we could have
* received a socket close event before we had the chance to
* shut the socket down.
*/
- clear_bit(SOCK_CLOSED, &con->flags);
+ clear_bit(CON_FLAG_SOCK_CLOSED, &con->flags);
con_sock_state_closed(con);
return rc;
}
@@ -516,9 +525,9 @@ void ceph_con_close(struct ceph_connecti
ceph_pr_addr(&con->peer_addr.in_addr));
con->state = CON_STATE_CLOSED;
- clear_bit(LOSSYTX, &con->flags); /* so we retry next connect */
- clear_bit(KEEPALIVE_PENDING, &con->flags);
- clear_bit(WRITE_PENDING, &con->flags);
+ clear_bit(CON_FLAG_LOSSYTX, &con->flags); /* so we retry next connect */
+ clear_bit(CON_FLAG_KEEPALIVE_PENDING, &con->flags);
+ clear_bit(CON_FLAG_WRITE_PENDING, &con->flags);
reset_connection(con);
con->peer_global_seq = 0;
@@ -770,7 +779,7 @@ static void prepare_write_message(struct
/* no, queue up footer too and be done */
prepare_write_message_footer(con);
- set_bit(WRITE_PENDING, &con->flags);
+ set_bit(CON_FLAG_WRITE_PENDING, &con->flags);
}
/*
@@ -791,7 +800,7 @@ static void prepare_write_ack(struct cep
&con->out_temp_ack);
con->out_more = 1; /* more will follow.. eventually.. */
- set_bit(WRITE_PENDING, &con->flags);
+ set_bit(CON_FLAG_WRITE_PENDING, &con->flags);
}
/*
@@ -802,7 +811,7 @@ static void prepare_write_keepalive(stru
dout("prepare_write_keepalive %p\n", con);
con_out_kvec_reset(con);
con_out_kvec_add(con, sizeof (tag_keepalive), &tag_keepalive);
- set_bit(WRITE_PENDING, &con->flags);
+ set_bit(CON_FLAG_WRITE_PENDING, &con->flags);
}
/*
@@ -845,7 +854,7 @@ static void prepare_write_banner(struct
&con->msgr->my_enc_addr);
con->out_more = 0;
- set_bit(WRITE_PENDING, &con->flags);
+ set_bit(CON_FLAG_WRITE_PENDING, &con->flags);
}
static int prepare_write_connect(struct ceph_connection *con)
@@ -896,7 +905,7 @@ static int prepare_write_connect(struct
auth->authorizer_buf);
con->out_more = 0;
- set_bit(WRITE_PENDING, &con->flags);
+ set_bit(CON_FLAG_WRITE_PENDING, &con->flags);
return 0;
}
@@ -1622,7 +1631,7 @@ static int process_connect(struct ceph_c
le32_to_cpu(con->in_reply.connect_seq));
if (con->in_reply.flags & CEPH_MSG_CONNECT_LOSSY)
- set_bit(LOSSYTX, &con->flags);
+ set_bit(CON_FLAG_LOSSYTX, &con->flags);
con->delay = 0; /* reset backoff memory */
@@ -2061,14 +2070,15 @@ do_next:
prepare_write_ack(con);
goto more;
}
- if (test_and_clear_bit(KEEPALIVE_PENDING, &con->flags)) {
+ if (test_and_clear_bit(CON_FLAG_KEEPALIVE_PENDING,
+ &con->flags)) {
prepare_write_keepalive(con);
goto more;
}
}
/* Nothing to do! */
- clear_bit(WRITE_PENDING, &con->flags);
+ clear_bit(CON_FLAG_WRITE_PENDING, &con->flags);
dout("try_write nothing else to write.\n");
ret = 0;
out:
@@ -2241,7 +2251,7 @@ static void con_work(struct work_struct
mutex_lock(&con->mutex);
restart:
- if (test_and_clear_bit(SOCK_CLOSED, &con->flags)) {
+ if (test_and_clear_bit(CON_FLAG_SOCK_CLOSED, &con->flags)) {
switch (con->state) {
case CON_STATE_CONNECTING:
con->error_msg = "connection failed";
@@ -2260,7 +2270,7 @@ restart:
goto fault;
}
- if (test_and_clear_bit(BACKOFF, &con->flags)) {
+ if (test_and_clear_bit(CON_FLAG_BACKOFF, &con->flags)) {
dout("con_work %p backing off\n", con);
if (queue_delayed_work(ceph_msgr_wq, &con->work,
round_jiffies_relative(con->delay))) {
@@ -2336,7 +2346,7 @@ static void ceph_fault(struct ceph_conne
con_close_socket(con);
- if (test_bit(LOSSYTX, &con->flags)) {
+ if (test_bit(CON_FLAG_LOSSYTX, &con->flags)) {
dout("fault on LOSSYTX channel, marking CLOSED\n");
con->state = CON_STATE_CLOSED;
goto out_unlock;
@@ -2356,9 +2366,9 @@ static void ceph_fault(struct ceph_conne
/* If there are no messages queued or keepalive pending, place
* the connection in a STANDBY state */
if (list_empty(&con->out_queue) &&
- !test_bit(KEEPALIVE_PENDING, &con->flags)) {
+ !test_bit(CON_FLAG_KEEPALIVE_PENDING, &con->flags)) {
dout("fault %p setting STANDBY clearing WRITE_PENDING\n", con);
- clear_bit(WRITE_PENDING, &con->flags);
+ clear_bit(CON_FLAG_WRITE_PENDING, &con->flags);
con->state = CON_STATE_STANDBY;
} else {
/* retry after a delay. */
@@ -2383,7 +2393,7 @@ static void ceph_fault(struct ceph_conne
* that when con_work restarts we schedule the
* delay then.
*/
- set_bit(BACKOFF, &con->flags);
+ set_bit(CON_FLAG_BACKOFF, &con->flags);
}
}
@@ -2440,8 +2450,8 @@ static void clear_standby(struct ceph_co
dout("clear_standby %p and ++connect_seq\n", con);
con->state = CON_STATE_PREOPEN;
con->connect_seq++;
- WARN_ON(test_bit(WRITE_PENDING, &con->flags));
- WARN_ON(test_bit(KEEPALIVE_PENDING, &con->flags));
+ WARN_ON(test_bit(CON_FLAG_WRITE_PENDING, &con->flags));
+ WARN_ON(test_bit(CON_FLAG_KEEPALIVE_PENDING, &con->flags));
}
}
@@ -2482,7 +2492,7 @@ void ceph_con_send(struct ceph_connectio
/* if there wasn't anything waiting to send before, queue
* new work */
- if (test_and_set_bit(WRITE_PENDING, &con->flags) == 0)
+ if (test_and_set_bit(CON_FLAG_WRITE_PENDING, &con->flags) == 0)
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_send);
@@ -2571,8 +2581,8 @@ void ceph_con_keepalive(struct ceph_conn
mutex_lock(&con->mutex);
clear_standby(con);
mutex_unlock(&con->mutex);
- if (test_and_set_bit(KEEPALIVE_PENDING, &con->flags) == 0 &&
- test_and_set_bit(WRITE_PENDING, &con->flags) == 0)
+ if (test_and_set_bit(CON_FLAG_KEEPALIVE_PENDING, &con->flags) == 0 &&
+ test_and_set_bit(CON_FLAG_WRITE_PENDING, &con->flags) == 0)
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_keepalive);
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/0073-libceph-clear-CONNECTING-in-ceph_con_close.patch
queue-3.4/0020-ceph-ensure-auth-ops-are-defined-before-use.patch
queue-3.4/0025-ceph-add-auth-buf-in-prepare_write_connect.patch
queue-3.4/0021-ceph-have-get_authorizer-methods-return-pointers.patch
queue-3.4/0026-libceph-avoid-unregistering-osd-request-when-not-reg.patch
queue-3.4/0077-libceph-distinguish-two-phases-of-connect-sequence.patch
queue-3.4/0045-libceph-provide-osd-number-when-creating-osd.patch
queue-3.4/0059-libceph-transition-socket-state-prior-to-actual-conn.patch
queue-3.4/0084-libceph-prevent-the-race-of-incoming-work-during-tea.patch
queue-3.4/0005-crush-fix-memory-leak-when-destroying-tree-buckets.patch
queue-3.4/0002-crush-adjust-local-retry-threshold.patch
queue-3.4/0091-libceph-fix-fault-locking-close-socket-on-lossy-faul.patch
queue-3.4/0088-libceph-re-initialize-bio_iter-on-start-of-message-r.patch
queue-3.4/0023-ceph-return-pointer-from-prepare_connect_authorizer.patch
queue-3.4/0055-libceph-make-ceph_con_revoke_message-a-msg-op.patch
queue-3.4/0090-libceph-reset-connection-retry-on-successfully-negot.patch
queue-3.4/0054-libceph-make-ceph_con_revoke-a-msg-operation.patch
queue-3.4/0098-libceph-clean-up-con-flags.patch
queue-3.4/0093-libceph-move-ceph_con_send-closed-check-under-the-co.patch
queue-3.4/0066-libceph-move-init_bio_-functions-up.patch
queue-3.4/0018-ceph-define-ceph_auth_handshake-type.patch
queue-3.4/0063-libceph-encapsulate-out-message-data-setup.patch
queue-3.4/0076-libceph-separate-banner-and-connect-writes.patch
queue-3.4/0040-libceph-rename-socket-callbacks.patch
queue-3.4/0011-ceph-messenger-reset-connection-kvec-caller.patch
queue-3.4/0032-libceph-fix-messenger-retry.patch
queue-3.4/0070-libceph-don-t-change-socket-state-on-sock-event.patch
queue-3.4/0061-libceph-use-con-get-put-methods.patch
queue-3.4/0074-libceph-clear-NEGOTIATING-when-done.patch
queue-3.4/0019-ceph-messenger-reduce-args-to-create_authorizer.patch
queue-3.4/0041-libceph-rename-kvec_reset-and-kvec_add-functions.patch
queue-3.4/0047-libceph-embed-ceph-connection-structure-in-mon_clien.patch
queue-3.4/0029-libceph-use-con-get-put-ops-from-osd_client.patch
queue-3.4/0051-libceph-tweak-ceph_alloc_msg.patch
queue-3.4/0064-libceph-encapsulate-advancing-msg-page.patch
queue-3.4/0075-libceph-define-and-use-an-explicit-CONNECTED-state.patch
queue-3.4/0082-libceph-allow-sock-transition-from-CONNECTING-to-CLO.patch
queue-3.4/0015-ceph-messenger-check-prepare_write_connect-result.patch
queue-3.4/0003-crush-be-more-tolerant-of-nonsensical-crush-maps.patch
queue-3.4/0028-libceph-osd_client-don-t-drop-reply-reference-too-ea.patch
queue-3.4/0014-ceph-don-t-set-WRITE_PENDING-too-early.patch
queue-3.4/0049-libceph-init-monitor-connection-when-opening.patch
queue-3.4/0016-ceph-messenger-rework-prepare_connect_authorizer.patch
queue-3.4/0097-libceph-replace-connection-state-bits-with-states.patch
queue-3.4/0068-libceph-don-t-use-bio_iter-as-a-flag.patch
queue-3.4/0062-libceph-drop-ceph_con_get-put-helpers-and-nref-membe.patch
queue-3.4/0089-libceph-protect-ceph_con_open-with-mutex.patch
queue-3.4/0048-libceph-drop-connection-refcounting-for-mon_client.patch
queue-3.4/0031-libceph-flush-msgr-queue-during-mon_client-shutdown.patch
queue-3.4/0094-libceph-drop-gratuitous-socket-close-calls-in-con_wo.patch
queue-3.4/0013-ceph-drop-msgr-argument-from-prepare_write_connect.patch
queue-3.4/0080-libceph-set-peer-name-on-con_open-not-init.patch
queue-3.4/0043-libceph-start-separating-connection-flags-from-state.patch
queue-3.4/0046-libceph-set-CLOSED-state-bit-in-con_init.patch
queue-3.4/0085-libceph-report-socket-read-write-error-message.patch
queue-3.4/0083-libceph-initialize-msgpool-message-types.patch
queue-3.4/0092-libceph-move-msgr-clear_standby-under-con-mutex-prot.patch
queue-3.4/0095-libceph-close-socket-directly-from-ceph_con_close.patch
queue-3.4/0009-ceph-messenger-change-read_partial-to-take-end-arg.patch
queue-3.4/0096-libceph-drop-unnecessary-CLOSED-check-in-socket-stat.patch
queue-3.4/0017-ceph-messenger-check-return-from-get_authorizer.patch
queue-3.4/0086-libceph-fix-mutex-coverage-for-ceph_con_close.patch
queue-3.4/0001-crush-clean-up-types-const-ness.patch
queue-3.4/0072-libceph-don-t-touch-con-state-in-con_close_socket.patch
queue-3.4/0037-ceph-check-PG_Private-flag-before-accessing-page-pri.patch
queue-3.4/0044-libceph-start-tracking-connection-socket-state.patch
queue-3.4/0099-libceph-clear-all-flags-on-con_close.patch
queue-3.4/0071-libceph-just-set-SOCK_CLOSED-when-state-changes.patch
queue-3.4/0022-ceph-use-info-returned-by-get_authorizer.patch
queue-3.4/0065-libceph-don-t-mark-footer-complete-before-it-is.patch
queue-3.4/0027-libceph-fix-pg_temp-updates.patch
queue-3.4/0079-libceph-add-some-fine-ASCII-art.patch
queue-3.4/0008-ceph-messenger-update-to-in-read_partial-caller.patch
queue-3.4/0007-ceph-messenger-use-read_partial-in-read_partial_mess.patch
queue-3.4/0078-libceph-small-changes-to-messenger.c.patch
queue-3.4/0010-libceph-don-t-reset-kvec-in-prepare_write_banner.patch
queue-3.4/0087-libceph-resubmit-linger-ops-when-pg-mapping-changes.patch
queue-3.4/0052-libceph-have-messages-point-to-their-connection.patch
queue-3.4/0067-libceph-move-init-of-bio_iter.patch
queue-3.4/0081-libceph-initialize-mon_client-con-only-once.patch
queue-3.4/0050-libceph-fully-initialize-connection-in-con_init.patch
queue-3.4/0053-libceph-have-messages-take-a-connection-reference.patch
queue-3.4/0012-ceph-messenger-send-banner-in-process_connect.patch
queue-3.4/0024-ceph-rename-prepare_connect_authorizer.patch
queue-3.4/0042-libceph-embed-ceph-messenger-structure-in-ceph_clien.patch
queue-3.4/0069-libceph-SOCK_CLOSED-is-a-flag-not-a-state.patch
queue-3.4/0004-crush-fix-tree-node-weight-lookup.patch
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