Orangefs: code sanitation.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Родитель
401898eed7
Коммит
ca9f518ead
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@ -46,6 +46,10 @@ static void orangefs_devreq_add_op(struct orangefs_kernel_op_s *op)
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list_add_tail(&op->list, &htable_ops_in_progress[index]);
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}
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/*
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* find the op with this tag and remove it from the in progress
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* hash table.
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*/
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static struct orangefs_kernel_op_s *orangefs_devreq_remove_op(__u64 tag)
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{
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struct orangefs_kernel_op_s *op, *next;
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@ -190,8 +194,10 @@ restart:
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return -EAGAIN;
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}
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gossip_debug(GOSSIP_DEV_DEBUG, "orangefs: reading op tag %llu %s\n",
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llu(cur_op->tag), get_opname_string(cur_op));
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gossip_debug(GOSSIP_DEV_DEBUG, "%s: reading op tag %llu %s\n",
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__func__,
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llu(cur_op->tag),
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get_opname_string(cur_op));
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/*
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* Such an op should never be on the list in the first place. If so, we
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@ -204,6 +210,7 @@ restart:
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spin_unlock(&orangefs_request_list_lock);
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return -EAGAIN;
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}
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list_del_init(&cur_op->list);
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spin_unlock(&orangefs_request_list_lock);
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@ -323,6 +330,7 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
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return -EPROTO;
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}
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/* remove the op from the in progress hash table */
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op = orangefs_devreq_remove_op(head.tag);
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if (!op) {
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gossip_err("WARNING: No one's waiting for tag %llu\n",
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@ -486,15 +494,7 @@ static int orangefs_devreq_release(struct inode *inode, struct file *file)
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gossip_debug(GOSSIP_DEV_DEBUG, "ORANGEFS Device Close: Filesystem(s) %s\n",
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(unmounted ? "UNMOUNTED" : "MOUNTED"));
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/*
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* Walk through the list of ops in the request list, mark them
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* as purged and wake them up.
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*/
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purge_waiting_ops();
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/*
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* Walk through the hash table of in progress operations; mark
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* them as purged and wake them up
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*/
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purge_inprogress_ops();
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orangefs_bufmap_run_down();
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@ -119,10 +119,10 @@ static int __init orangefs_init(void)
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if (gossip_debug_mask != 0)
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kernel_mask_set_mod_init = true;
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/* print information message to the system log */
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pr_info("orangefs: orangefs_init called with debug mask: :%s: :%llx:\n",
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kernel_debug_string,
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(unsigned long long)gossip_debug_mask);
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pr_info("%s: called with debug mask: :%s: :%llx:\n",
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__func__,
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kernel_debug_string,
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(unsigned long long)gossip_debug_mask);
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ret = bdi_init(&orangefs_backing_dev_info);
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@ -147,7 +147,8 @@ static int __init orangefs_init(void)
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/* Initialize the orangefsdev subsystem. */
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ret = orangefs_dev_init();
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if (ret < 0) {
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gossip_err("orangefs: could not initialize device subsystem %d!\n",
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gossip_err("%s: could not initialize device subsystem %d!\n",
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__func__,
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ret);
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goto cleanup_inode;
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}
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@ -75,7 +75,7 @@ retry_servicing:
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/*
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* If ORANGEFS_OP_NO_MUTEX was set in flags, we need to avoid
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* aquiring the request_mutex because we're servicing a
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* acquiring the request_mutex because we're servicing a
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* high priority remount operation and the request_mutex is
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* already taken.
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*/
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@ -91,7 +91,8 @@ retry_servicing:
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if (ret < 0) {
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op->downcall.status = ret;
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gossip_debug(GOSSIP_WAIT_DEBUG,
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"orangefs: service_operation interrupted.\n");
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"%s: service_operation interrupted.\n",
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__func__);
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return ret;
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}
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}
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@ -127,9 +128,9 @@ retry_servicing:
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ret,
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op);
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/* got matching downcall; make sure status is in errno format */
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if (!ret) {
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spin_unlock(&op->lock);
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/* got matching downcall; make sure status is in errno format */
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op->downcall.status =
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orangefs_normalize_to_errno(op->downcall.status);
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ret = op->downcall.status;
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@ -144,8 +145,8 @@ retry_servicing:
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}
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/*
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* remove waiting ops from the request list or
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* remove in-progress ops from the in-progress list.
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* remove a waiting op from the request list or
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* remove an in-progress op from the in-progress list.
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*/
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orangefs_clean_up_interrupted_operation(op);
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@ -179,6 +180,7 @@ out:
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return ret;
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}
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/* This can get called on an I/O op if it had a bad service_operation. */
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bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op)
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{
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u64 tag = op->tag;
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@ -206,23 +208,31 @@ bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op)
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spin_unlock(&op->lock);
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spin_unlock(&orangefs_request_list_lock);
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gossip_debug(GOSSIP_UTILS_DEBUG,
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gossip_debug(GOSSIP_WAIT_DEBUG,
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"Attempting ORANGEFS operation cancellation of tag %llu\n",
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llu(tag));
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return true;
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}
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static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *op)
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/*
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* Change an op to the "given up" state and remove it from its list.
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*/
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static void
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orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *op)
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{
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/*
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* handle interrupted cases depending on what state we were in when
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* the interruption is detected. there is a coarse grained lock
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* across the operation.
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* the interruption is detected.
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*
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* Called with op->lock held.
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*/
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/*
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* List manipulation code elsewhere will ignore ops that
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* have been given up upon.
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*/
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op->op_state |= OP_VFS_STATE_GIVEN_UP;
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/* from that point on it can't be moved by anybody else */
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if (list_empty(&op->list)) {
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/* caught copying to/from daemon */
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BUG_ON(op_state_serviced(op));
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@ -259,12 +269,12 @@ static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s
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}
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/*
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* sleeps on waitqueue waiting for matching downcall.
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* if client-core finishes servicing, then we are good to go.
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* Sleeps on waitqueue waiting for matching downcall.
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* If client-core finishes servicing, then we are good to go.
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* else if client-core exits, we get woken up here, and retry with a timeout
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*
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* Post when this call returns to the caller, the specified op will no
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* longer be on any list or htable.
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* When this call returns to the caller, the specified op will no
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* longer be in either the in_progress hash table or on the request list.
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*
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* Returns 0 on success and -errno on failure
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* Errors are:
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@ -281,6 +291,12 @@ static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op,
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{
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long n;
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/*
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* There's a "schedule_timeout" inside of these wait
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* primitives, during which the op is out of the hands of the
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* user process that needs something done and is being
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* manipulated by the client-core process.
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*/
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if (interruptible)
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n = wait_for_completion_interruptible_timeout(&op->waitq,
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timeout);
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