[PATCH V3] staging: lustre: kernel style neating (block comments)

From: snnw
Date: Mon Oct 19 2015 - 07:57:06 EST

From: Sanne Wouda <snnw@xxxxxxxxxxxxxx>

Fix lustre/ptlrpc/client.c block comments following the Coding Style
preferred format for multi-line and single-line comments:

/*
* This is the preferred style for multi-line
* comments in the Linux kernel source code.
* Please use it consistently.
*
* Description: A column of asterisks on the left side,
* with beginning and ending almost-blank lines.
*/

Included some minor textual fixes to get some comments on a single line.

Signed-off-by: Sanne Wouda <snnw@xxxxxxxxxxxxxx>
---

Greg:
> This doesn't apply to my tree anymore, can you please redo it against
> the staging-testing branch of my staging.git tree on git.kernel.org and
> resend it?

Applies cleanly to c3af8a28f43
"staging: IB/hfi1: use TASK_COMM_LEN in hfi1_ctxtdata"

Comments by Andreas have been addressed.

drivers/staging/lustre/lustre/ptlrpc/client.c | 322 +++++++++++++++-----------
1 file changed, 182 insertions(+), 140 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ptlrpc/client.c b/drivers/staging/lustre/lustre/ptlrpc/client.c
index 9bf13d7..083f99c 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/client.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/client.c
@@ -72,9 +72,11 @@ struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid)
lnet_process_id_t peer;
int err;

- /* ptlrpc_uuid_to_peer() initializes its 2nd parameter
- * before accessing its values. */
- /* coverity[uninit_use_in_call] */
+ /*
+ * ptlrpc_uuid_to_peer() initializes its 2nd parameter
+ * before accessing its values.
+ * coverity[uninit_use_in_call]
+ */
err = ptlrpc_uuid_to_peer(uuid, &peer, &self);
if (err != 0) {
CNETERR("cannot find peer %s!\n", uuid->uuid);
@@ -117,8 +119,10 @@ struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned npages, unsigned max_brw,
desc->bd_md_count = 0;
LASSERT(max_brw > 0);
desc->bd_md_max_brw = min(max_brw, PTLRPC_BULK_OPS_COUNT);
- /* PTLRPC_BULK_OPS_COUNT is the compile-time transfer limit for this
- * node. Negotiated ocd_brw_size will always be <= this number. */
+ /*
+ * PTLRPC_BULK_OPS_COUNT is the compile-time transfer limit for this
+ * node. Negotiated ocd_brw_size will always be <= this number.
+ */
for (i = 0; i < PTLRPC_BULK_OPS_COUNT; i++)
LNetInvalidateHandle(&desc->bd_mds[i]);

@@ -223,8 +227,9 @@ void ptlrpc_at_set_req_timeout(struct ptlrpc_request *req)
LASSERT(req->rq_import);

if (AT_OFF) {
- /* non-AT settings */
- /**
+ /*
+ * non-AT settings
+ *
* \a imp_server_timeout means this is reverse import and
* we send (currently only) ASTs to the client and cannot afford
* to wait too long for the reply, otherwise the other client
@@ -240,11 +245,15 @@ void ptlrpc_at_set_req_timeout(struct ptlrpc_request *req)
serv_est = at_get(&at->iat_service_estimate[idx]);
req->rq_timeout = at_est2timeout(serv_est);
}
- /* We could get even fancier here, using history to predict increased
- loading... */
+ /*
+ * We could get even fancier here, using history to predict increased
+ * loading...
+ */

- /* Let the server know what this RPC timeout is by putting it in the
- reqmsg*/
+ /*
+ * Let the server know what this RPC timeout is by putting it in the
+ * reqmsg
+ */
lustre_msg_set_timeout(req->rq_reqmsg, req->rq_timeout);
}
EXPORT_SYMBOL(ptlrpc_at_set_req_timeout);
@@ -261,8 +270,10 @@ static void ptlrpc_at_adj_service(struct ptlrpc_request *req,
at = &req->rq_import->imp_at;

idx = import_at_get_index(req->rq_import, req->rq_request_portal);
- /* max service estimates are tracked on the server side,
- so just keep minimal history here */
+ /*
+ * max service estimates are tracked on the server side,
+ * so just keep minimal history here
+ */
oldse = at_measured(&at->iat_service_estimate[idx], serv_est);
if (oldse != 0)
CDEBUG(D_ADAPTTO, "The RPC service estimate for %s ptl %d has changed from %d to %d\n",
@@ -287,7 +298,8 @@ static void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
LASSERT(req->rq_import);

if (service_time > now - req->rq_sent + 3) {
- /* bz16408, however, this can also happen if early reply
+ /*
+ * bz16408, however, this can also happen if early reply
* is lost and client RPC is expired and resent, early reply
* or reply of original RPC can still be fit in reply buffer
* of resent RPC, now client is measuring time from the
@@ -376,8 +388,10 @@ static int ptlrpc_at_recv_early_reply(struct ptlrpc_request *req)

spin_lock(&req->rq_lock);
olddl = req->rq_deadline;
- /* server assumes it now has rq_timeout from when it sent the
- * early reply, so client should give it at least that long. */
+ /*
+ * server assumes it now has rq_timeout from when it sent the
+ * early reply, so client should give it at least that long.
+ */
req->rq_deadline = ktime_get_real_seconds() + req->rq_timeout +
ptlrpc_at_get_net_latency(req);

@@ -503,8 +517,10 @@ ptlrpc_init_rq_pool(int num_rq, int msgsize,
if (!pool)
return NULL;

- /* Request next power of two for the allocation, because internally
- kernel would do exactly this */
+ /*
+ * Request next power of two for the allocation, because internally
+ * kernel would do exactly this
+ */

spin_lock_init(&pool->prp_lock);
INIT_LIST_HEAD(&pool->prp_req_list);
@@ -531,10 +547,12 @@ ptlrpc_prep_req_from_pool(struct ptlrpc_request_pool *pool)

spin_lock(&pool->prp_lock);

- /* See if we have anything in a pool, and bail out if nothing,
+ /*
+ * See if we have anything in a pool, and bail out if nothing,
* in writeout path, where this matters, this is safe to do, because
* nothing is lost in this case, and when some in-flight requests
- * complete, this code will be called again. */
+ * complete, this code will be called again.
+ */
if (unlikely(list_empty(&pool->prp_req_list))) {
spin_unlock(&pool->prp_lock);
return NULL;
@@ -665,7 +683,8 @@ int ptlrpc_request_pack(struct ptlrpc_request *request,
if (rc)
return rc;

- /* For some old 1.8 clients (< 1.8.7), they will LASSERT the size of
+ /*
+ * For some old 1.8 clients (< 1.8.7), they will LASSERT the size of
* ptlrpc_body sent from server equal to local ptlrpc_body size, so we
* have to send old ptlrpc_body to keep interoperability with these
* clients.
@@ -936,8 +955,10 @@ void ptlrpc_set_add_req(struct ptlrpc_request_set *set,
lustre_msg_set_jobid(req->rq_reqmsg, NULL);

if (set->set_producer != NULL)
- /* If the request set has a producer callback, the RPC must be
- * sent straight away */
+ /*
+ * If the request set has a producer callback, the RPC must be
+ * sent straight away
+ */
ptlrpc_send_new_req(req);
}
EXPORT_SYMBOL(ptlrpc_set_add_req);
@@ -957,9 +978,7 @@ void ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
LASSERT(test_bit(LIOD_STOP, &pc->pc_flags) == 0);

spin_lock(&set->set_new_req_lock);
- /*
- * The set takes over the caller's request reference.
- */
+ /* The set takes over the caller's request reference. */
req->rq_set = set;
req->rq_queued_time = cfs_time_current();
list_add_tail(&req->rq_set_chain, &set->set_new_requests);
@@ -970,9 +989,11 @@ void ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
if (count == 1) {
wake_up(&set->set_waitq);

- /* XXX: It maybe unnecessary to wakeup all the partners. But to
+ /*
+ * XXX: It maybe unnecessary to wakeup all the partners. But to
* guarantee the async RPC can be processed ASAP, we have
- * no other better choice. It maybe fixed in future. */
+ * no other better choice. It maybe fixed in future.
+ */
for (i = 0; i < pc->pc_npartners; i++)
wake_up(&pc->pc_partners[i]->pc_set->set_waitq);
}
@@ -1060,8 +1081,10 @@ static int ptlrpc_console_allow(struct ptlrpc_request *req)
LASSERT(req->rq_reqmsg != NULL);
opc = lustre_msg_get_opc(req->rq_reqmsg);

- /* Suppress particular reconnect errors which are to be expected. No
- * errors are suppressed for the initial connection on an import */
+ /*
+ * Suppress particular reconnect errors which are to be expected. No
+ * errors are suppressed for the initial connection on an import
+ */
if ((lustre_handle_is_used(&req->rq_import->imp_remote_handle)) &&
(opc == OST_CONNECT || opc == MDS_CONNECT || opc == MGS_CONNECT)) {

@@ -1156,10 +1179,11 @@ static int after_reply(struct ptlrpc_request *req)
}

sptlrpc_cli_free_repbuf(req);
- /* Pass the required reply buffer size (include
- * space for early reply).
- * NB: no need to roundup because alloc_repbuf
- * will roundup it */
+ /*
+ * Pass the required reply buffer size (include space for early
+ * reply). NB: no need to round up because alloc_repbuf will
+ * round it up
+ */
req->rq_replen = req->rq_nob_received;
req->rq_nob_received = 0;
spin_lock(&req->rq_lock);
@@ -1178,9 +1202,7 @@ static int after_reply(struct ptlrpc_request *req)
return rc;
}

- /*
- * Security layer unwrap might ask resend this request.
- */
+ /* Security layer unwrap might ask resend this request. */
if (req->rq_resend)
return 0;

@@ -1201,18 +1223,19 @@ static int after_reply(struct ptlrpc_request *req)

/* allocate new xid to avoid reply reconstruction */
if (!req->rq_bulk) {
- /* new xid is already allocated for bulk in
- * ptlrpc_check_set() */
+ /* new xid is already allocated for bulk in ptlrpc_check_set() */
req->rq_xid = ptlrpc_next_xid();
DEBUG_REQ(D_RPCTRACE, req, "Allocating new xid for resend on EINPROGRESS");
}

/* Readjust the timeout for current conditions */
ptlrpc_at_set_req_timeout(req);
- /* delay resend to give a chance to the server to get ready.
+ /*
+ * delay resend to give a chance to the server to get ready.
* The delay is increased by 1s on every resend and is capped to
* the current request timeout (i.e. obd_timeout if AT is off,
- * or AT service time x 125% + 5s, see at_est2timeout) */
+ * or AT service time x 125% + 5s, see at_est2timeout)
+ */
if (req->rq_nr_resend > req->rq_timeout)
req->rq_sent = now + req->rq_timeout;
else
@@ -1268,9 +1291,7 @@ static int after_reply(struct ptlrpc_request *req)
ldlm_cli_update_pool(req);
}

- /*
- * Store transno in reqmsg for replay.
- */
+ /* Store transno in reqmsg for replay. */
if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)) {
req->rq_transno = lustre_msg_get_transno(req->rq_repmsg);
lustre_msg_set_transno(req->rq_reqmsg, req->rq_transno);
@@ -1286,22 +1307,22 @@ static int after_reply(struct ptlrpc_request *req)
(req->rq_transno >
lustre_msg_get_last_committed(req->rq_repmsg) ||
req->rq_replay)) {
- /** version recovery */
+ /* version recovery */
ptlrpc_save_versions(req);
ptlrpc_retain_replayable_request(req, imp);
} else if (req->rq_commit_cb != NULL &&
list_empty(&req->rq_replay_list)) {
- /* NB: don't call rq_commit_cb if it's already on
+ /*
+ * NB: don't call rq_commit_cb if it's already on
* rq_replay_list, ptlrpc_free_committed() will call
- * it later, see LU-3618 for details */
+ * it later, see LU-3618 for details
+ */
spin_unlock(&imp->imp_lock);
req->rq_commit_cb(req);
spin_lock(&imp->imp_lock);
}

- /*
- * Replay-enabled imports return commit-status information.
- */
+ /* Replay-enabled imports return commit-status information. */
if (lustre_msg_get_last_committed(req->rq_repmsg)) {
imp->imp_peer_committed_transno =
lustre_msg_get_last_committed(req->rq_repmsg);
@@ -1420,8 +1441,10 @@ static inline int ptlrpc_set_producer(struct ptlrpc_request_set *set)

remaining = atomic_read(&set->set_remaining);

- /* populate the ->set_requests list with requests until we
- * reach the maximum number of RPCs in flight for this set */
+ /*
+ * populate the ->set_requests list with requests until we
+ * reach the maximum number of RPCs in flight for this set
+ */
while (atomic_read(&set->set_remaining) < set->set_max_inflight) {
rc = set->set_producer(set, set->set_producer_arg);
if (rc == -ENOENT) {
@@ -1461,7 +1484,8 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
int unregistered = 0;
int rc = 0;

- /* This schedule point is mainly for the ptlrpcd caller of this
+ /*
+ * This schedule point is mainly for the ptlrpcd caller of this
* function. Most ptlrpc sets are not long-lived and unbounded
* in length, but at the least the set used by the ptlrpcd is.
* Since the processing time is unbounded, we need to insert an
@@ -1520,8 +1544,7 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
OBD_FAIL_ONCE);
}

- /*
- * Move to next phase if reply was successfully
+ /* Move to next phase if reply was successfully
* unlinked.
*/
ptlrpc_rqphase_move(req, req->rq_next_phase);
@@ -1535,15 +1558,11 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
if (req->rq_phase == RQ_PHASE_INTERPRET)
goto interpret;

- /*
- * Note that this also will start async reply unlink.
- */
+ /* Note that this also will start async reply unlink. */
if (req->rq_net_err && !req->rq_timedout) {
ptlrpc_expire_one_request(req, 1);

- /*
- * Check if we still need to wait for unlink.
- */
+ /* Check if we still need to wait for unlink. */
if (ptlrpc_client_recv_or_unlink(req) ||
ptlrpc_client_bulk_active(req))
continue;
@@ -1568,7 +1587,8 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
goto interpret;
}

- /* ptlrpc_set_wait->l_wait_event sets lwi_allow_intr
+ /*
+ * ptlrpc_set_wait->l_wait_event sets lwi_allow_intr
* so it sets rq_intr regardless of individual rpc
* timeouts. The synchronous IO waiting path sets
* rq_intr irrespective of whether ptlrpcd
@@ -1595,8 +1615,10 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
spin_lock(&imp->imp_lock);
if (ptlrpc_import_delay_req(imp, req,
&status)) {
- /* put on delay list - only if we wait
- * recovery finished - before send */
+ /*
+ * put on delay list - only if we wait
+ * recovery finished - before send
+ */
list_del_init(&req->rq_list);
list_add_tail(&req->rq_list,
&imp->
@@ -1632,8 +1654,7 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
spin_unlock(&req->rq_lock);

if (req->rq_timedout || req->rq_resend) {
- /* This is re-sending anyways,
- * let's mark req as resend. */
+ /* This is re-sending anyway, let's mark req as resend. */
spin_lock(&req->rq_lock);
req->rq_resend = 1;
spin_unlock(&req->rq_lock);
@@ -1711,8 +1732,10 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)

spin_unlock(&req->rq_lock);

- /* unlink from net because we are going to
- * swab in-place of reply buffer */
+ /*
+ * unlink from net because we are going to
+ * swab in-place of reply buffer
+ */
unregistered = ptlrpc_unregister_reply(req, 1);
if (!unregistered)
continue;
@@ -1721,7 +1744,8 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
if (req->rq_resend)
continue;

- /* If there is no bulk associated with this request,
+ /*
+ * If there is no bulk associated with this request,
* then we're done and should let the interpreter
* process the reply. Similarly if the RPC returned
* an error, and therefore the bulk will never arrive.
@@ -1739,10 +1763,12 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
continue;

if (req->rq_bulk->bd_failure) {
- /* The RPC reply arrived OK, but the bulk screwed
+ /*
+ * The RPC reply arrived OK, but the bulk screwed
* up! Dead weird since the server told us the RPC
* was good after getting the REPLY for her GET or
- * the ACK for her PUT. */
+ * the ACK for her PUT.
+ */
DEBUG_REQ(D_ERROR, req, "bulk transfer failed");
req->rq_status = -EIO;
}
@@ -1752,8 +1778,10 @@ int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
interpret:
LASSERT(req->rq_phase == RQ_PHASE_INTERPRET);

- /* This moves to "unregistering" phase we need to wait for
- * reply unlink. */
+ /*
+ * This moves to "unregistering" phase we need to wait for
+ * reply unlink.
+ */
if (!unregistered && !ptlrpc_unregister_reply(req, 1)) {
/* start async bulk unlink too */
ptlrpc_unregister_bulk(req, 1);
@@ -1763,8 +1791,7 @@ interpret:
if (!ptlrpc_unregister_bulk(req, 1))
continue;

- /* When calling interpret receiving already should be
- * finished. */
+ /* When calling interpret receive should already be finished. */
LASSERT(!req->rq_receiving_reply);

ptlrpc_req_interpret(env, req, req->rq_status);
@@ -1783,10 +1810,12 @@ interpret:
lustre_msg_get_opc(req->rq_reqmsg));

spin_lock(&imp->imp_lock);
- /* Request already may be not on sending or delaying list. This
+ /*
+ * Request already may be not on sending or delaying list. This
* may happen in the case of marking it erroneous for the case
* ptlrpc_import_delay_req(req, status) find it impossible to
- * allow sending this rpc and returns *status != 0. */
+ * allow sending this rpc and returns *status != 0.
+ */
if (!list_empty(&req->rq_list)) {
list_del_init(&req->rq_list);
atomic_dec(&imp->imp_inflight);
@@ -1801,8 +1830,10 @@ interpret:
if (ptlrpc_set_producer(set) > 0)
force_timer_recalc = 1;

- /* free the request that has just been completed
- * in order not to pollute set->set_requests */
+ /*
+ * free the request that has just been completed
+ * in order not to pollute set->set_requests
+ */
list_del_init(&req->rq_set_chain);
spin_lock(&req->rq_lock);
req->rq_set = NULL;
@@ -1818,8 +1849,10 @@ interpret:
}
}

- /* move completed request at the head of list so it's easier for
- * caller to find them */
+ /*
+ * move completed request at the head of list so it's easier for
+ * caller to find them
+ */
list_splice(&comp_reqs, &set->set_requests);

/* If we hit an error, we want to recover promptly. */
@@ -1869,8 +1902,10 @@ int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink)
if (imp->imp_dlm_fake)
return 1;

- /* If this request is for recovery or other primordial tasks,
- * then error it out here. */
+ /*
+ * If this request is for recovery or other primordial tasks,
+ * then error it out here.
+ */
if (req->rq_ctx_init || req->rq_ctx_fini ||
req->rq_send_state != LUSTRE_IMP_FULL ||
imp->imp_obd->obd_no_recov) {
@@ -1884,8 +1919,10 @@ int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink)
return 1;
}

- /* if a request can't be resent we can't wait for an answer after
- the timeout */
+ /*
+ * if a request can't be resent we can't wait for an answer after
+ * the timeout
+ */
if (ptlrpc_no_resend(req)) {
DEBUG_REQ(D_RPCTRACE, req, "TIMEOUT-NORESEND:");
rc = 1;
@@ -1909,9 +1946,7 @@ int ptlrpc_expired_set(void *data)

LASSERT(set != NULL);

- /*
- * A timeout expired. See which reqs it applies to...
- */
+ /* A timeout expired. See which reqs it applies to... */
list_for_each(tmp, &set->set_requests) {
struct ptlrpc_request *req =
list_entry(tmp, struct ptlrpc_request,
@@ -1931,8 +1966,10 @@ int ptlrpc_expired_set(void *data)
req->rq_deadline > now) /* not expired */
continue;

- /* Deal with this guy. Do it asynchronously to not block
- * ptlrpcd thread. */
+ /*
+ * Deal with this guy. Do it asynchronously to not block
+ * ptlrpcd thread.
+ */
ptlrpc_expire_one_request(req, 1);
}

@@ -1996,23 +2033,17 @@ int ptlrpc_set_next_timeout(struct ptlrpc_request_set *set)
list_for_each(tmp, &set->set_requests) {
req = list_entry(tmp, struct ptlrpc_request, rq_set_chain);

- /*
- * Request in-flight?
- */
+ /* Request in-flight? */
if (!(((req->rq_phase == RQ_PHASE_RPC) && !req->rq_waiting) ||
(req->rq_phase == RQ_PHASE_BULK) ||
(req->rq_phase == RQ_PHASE_NEW)))
continue;

- /*
- * Already timed out.
- */
+ /* Already timed out. */
if (req->rq_timedout)
continue;

- /*
- * Waiting for ctx.
- */
+ /* Waiting for ctx. */
if (req->rq_wait_ctx)
continue;

@@ -2061,8 +2092,10 @@ int ptlrpc_set_wait(struct ptlrpc_request_set *set)
do {
timeout = ptlrpc_set_next_timeout(set);

- /* wait until all complete, interrupted, or an in-flight
- * req times out */
+ /*
+ * wait until all complete, interrupted, or an in-flight
+ * req times out
+ */
CDEBUG(D_RPCTRACE, "set %p going to sleep for %d seconds\n",
set, timeout);

@@ -2087,18 +2120,22 @@ int ptlrpc_set_wait(struct ptlrpc_request_set *set)

rc = l_wait_event(set->set_waitq, ptlrpc_check_set(NULL, set), &lwi);

- /* LU-769 - if we ignored the signal because it was already
+ /*
+ * LU-769 - if we ignored the signal because it was already
* pending when we started, we need to handle it now or we risk
- * it being ignored forever */
+ * it being ignored forever
+ */
if (rc == -ETIMEDOUT && !lwi.lwi_allow_intr &&
cfs_signal_pending()) {
sigset_t blocked_sigs =
cfs_block_sigsinv(LUSTRE_FATAL_SIGS);

- /* In fact we only interrupt for the "fatal" signals
+ /*
+ * In fact we only interrupt for the "fatal" signals
* like SIGINT or SIGKILL. We still ignore less
* important signals since ptlrpc set is not easily
- * reentrant from userspace again */
+ * reentrant from userspace again
+ */
if (cfs_signal_pending())
ptlrpc_interrupted_set(set);
cfs_restore_sigs(blocked_sigs);
@@ -2106,13 +2143,15 @@ int ptlrpc_set_wait(struct ptlrpc_request_set *set)

LASSERT(rc == 0 || rc == -EINTR || rc == -ETIMEDOUT);

- /* -EINTR => all requests have been flagged rq_intr so next
+ /*
+ * -EINTR => all requests have been flagged rq_intr so next
* check completes.
* -ETIMEDOUT => someone timed out. When all reqs have
* timed out, signals are enabled allowing completion with
* EINTR.
* I don't really care if we go once more round the loop in
- * the error cases -eeb. */
+ * the error cases -eeb.
+ */
if (rc == 0 && atomic_read(&set->set_remaining) == 0) {
list_for_each(tmp, &set->set_requests) {
req = list_entry(tmp, struct ptlrpc_request,
@@ -2178,8 +2217,10 @@ static void __ptlrpc_free_req(struct ptlrpc_request *request, int locked)

req_capsule_fini(&request->rq_pill);

- /* We must take it off the imp_replay_list first. Otherwise, we'll set
- * request->rq_reqmsg to NULL while osc_close is dereferencing it. */
+ /*
+ * We must take it off the imp_replay_list first. Otherwise, we'll set
+ * request->rq_reqmsg to NULL while osc_close is dereferencing it.
+ */
if (request->rq_import != NULL) {
if (!locked)
spin_lock(&request->rq_import->imp_lock);
@@ -2280,40 +2321,28 @@ int ptlrpc_unregister_reply(struct ptlrpc_request *request, int async)
wait_queue_head_t *wq;
struct l_wait_info lwi;

- /*
- * Might sleep.
- */
+ /* Might sleep. */
LASSERT(!in_interrupt());

- /*
- * Let's setup deadline for reply unlink.
- */
+ /* Let's setup deadline for reply unlink. */
if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_LONG_REPL_UNLINK) &&
async && request->rq_reply_deadline == 0)
request->rq_reply_deadline = ktime_get_real_seconds()+LONG_UNLINK;

- /*
- * Nothing left to do.
- */
+ /* Nothing left to do. */
if (!ptlrpc_client_recv_or_unlink(request))
return 1;

LNetMDUnlink(request->rq_reply_md_h);

- /*
- * Let's check it once again.
- */
+ /* Let's check it once again. */
if (!ptlrpc_client_recv_or_unlink(request))
return 1;

- /*
- * Move to "Unregistering" phase as reply was not unlinked yet.
- */
+ /* Move to "Unregistering" phase as reply was not unlinked yet. */
ptlrpc_rqphase_move(request, RQ_PHASE_UNREGISTERING);

- /*
- * Do not wait for unlink to finish.
- */
+ /* Do not wait for unlink to finish. */
if (async)
return 0;

@@ -2328,8 +2357,10 @@ int ptlrpc_unregister_reply(struct ptlrpc_request *request, int async)
wq = &request->rq_reply_waitq;

for (;;) {
- /* Network access will complete in finite time but the HUGE
- * timeout lets us CWARN for visibility of sluggish NALs */
+ /*
+ * Network access will complete in finite time but the HUGE
+ * timeout lets us CWARN for visibility of sluggish NALs
+ */
lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(LONG_UNLINK),
cfs_time_seconds(1), NULL, NULL);
rc = l_wait_event(*wq, !ptlrpc_client_recv_or_unlink(request),
@@ -2472,8 +2503,10 @@ void ptlrpc_resend_req(struct ptlrpc_request *req)
DEBUG_REQ(D_HA, req, "going to resend");
spin_lock(&req->rq_lock);

- /* Request got reply but linked to the import list still.
- Let ptlrpc_check_set() to process it. */
+ /*
+ * Request got reply but linked to the import list still.
+ * Let ptlrpc_check_set() to process it.
+ */
if (ptlrpc_client_replied(req)) {
spin_unlock(&req->rq_lock);
DEBUG_REQ(D_HA, req, "it has reply, so skip it");
@@ -2525,8 +2558,10 @@ void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
LBUG();
}

- /* clear this for new requests that were resent as well
- as resent replayed requests. */
+ /*
+ * clear this for new requests that were resent as well
+ * as resent replayed requests.
+ */
lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);

/* don't re-add requests that have been replayed */
@@ -2543,7 +2578,8 @@ void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
list_entry(tmp, struct ptlrpc_request,
rq_replay_list);

- /* We may have duplicate transnos if we create and then
+ /*
+ * We may have duplicate transnos if we create and then
* open a file, or for closes retained if to match creating
* opens, so use req->rq_xid as a secondary key.
* (See bugs 684, 685, and 428.)
@@ -2728,8 +2764,10 @@ int ptlrpc_replay_req(struct ptlrpc_request *req)
/* Readjust the timeout for current conditions */
ptlrpc_at_set_req_timeout(req);

- /* Tell server the net_latency, so the server can calculate how long
- * it should wait for next replay */
+ /*
+ * Tell server the net_latency, so the server can calculate how long
+ * it should wait for next replay
+ */
lustre_msg_set_service_time(req->rq_reqmsg,
ptlrpc_at_get_net_latency(req));
DEBUG_REQ(D_HA, req, "REPLAY");
@@ -2749,13 +2787,15 @@ void ptlrpc_abort_inflight(struct obd_import *imp)
{
struct list_head *tmp, *n;

- /* Make sure that no new requests get processed for this import.
+ /*
+ * Make sure that no new requests get processed for this import.
* ptlrpc_{queue,set}_wait must (and does) hold imp_lock while testing
* this flag and then putting requests on sending_list or delayed_list.
*/
spin_lock(&imp->imp_lock);

- /* XXX locking? Maybe we should remove each request with the list
+ /*
+ * XXX locking? Maybe we should remove each request with the list
* locked? Also, how do we know if the requests on the list are
* being freed at this time?
*/
@@ -2789,8 +2829,10 @@ void ptlrpc_abort_inflight(struct obd_import *imp)
spin_unlock(&req->rq_lock);
}

- /* Last chance to free reqs left on the replay list, but we
- * will still leak reqs that haven't committed. */
+ /*
+ * Last chance to free reqs left on the replay list, but we
+ * will still leak reqs that haven't committed.
+ */
if (imp->imp_replayable)
ptlrpc_free_committed(imp);

--
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/