Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Mike Marshall 2016-02-26 10:21:12 -05:00
Родитель 401898eed7
Коммит ca9f518ead
3 изменённых файлов: 46 добавлений и 29 удалений

Просмотреть файл

@ -46,6 +46,10 @@ static void orangefs_devreq_add_op(struct orangefs_kernel_op_s *op)
list_add_tail(&op->list, &htable_ops_in_progress[index]);
}
/*
* find the op with this tag and remove it from the in progress
* hash table.
*/
static struct orangefs_kernel_op_s *orangefs_devreq_remove_op(__u64 tag)
{
struct orangefs_kernel_op_s *op, *next;
@ -190,8 +194,10 @@ restart:
return -EAGAIN;
}
gossip_debug(GOSSIP_DEV_DEBUG, "orangefs: reading op tag %llu %s\n",
llu(cur_op->tag), get_opname_string(cur_op));
gossip_debug(GOSSIP_DEV_DEBUG, "%s: reading op tag %llu %s\n",
__func__,
llu(cur_op->tag),
get_opname_string(cur_op));
/*
* Such an op should never be on the list in the first place. If so, we
@ -204,6 +210,7 @@ restart:
spin_unlock(&orangefs_request_list_lock);
return -EAGAIN;
}
list_del_init(&cur_op->list);
spin_unlock(&orangefs_request_list_lock);
@ -323,6 +330,7 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
return -EPROTO;
}
/* remove the op from the in progress hash table */
op = orangefs_devreq_remove_op(head.tag);
if (!op) {
gossip_err("WARNING: No one's waiting for tag %llu\n",
@ -486,15 +494,7 @@ static int orangefs_devreq_release(struct inode *inode, struct file *file)
gossip_debug(GOSSIP_DEV_DEBUG, "ORANGEFS Device Close: Filesystem(s) %s\n",
(unmounted ? "UNMOUNTED" : "MOUNTED"));
/*
* Walk through the list of ops in the request list, mark them
* as purged and wake them up.
*/
purge_waiting_ops();
/*
* Walk through the hash table of in progress operations; mark
* them as purged and wake them up
*/
purge_inprogress_ops();
orangefs_bufmap_run_down();

Просмотреть файл

@ -119,10 +119,10 @@ static int __init orangefs_init(void)
if (gossip_debug_mask != 0)
kernel_mask_set_mod_init = true;
/* print information message to the system log */
pr_info("orangefs: orangefs_init called with debug mask: :%s: :%llx:\n",
kernel_debug_string,
(unsigned long long)gossip_debug_mask);
pr_info("%s: called with debug mask: :%s: :%llx:\n",
__func__,
kernel_debug_string,
(unsigned long long)gossip_debug_mask);
ret = bdi_init(&orangefs_backing_dev_info);
@ -147,7 +147,8 @@ static int __init orangefs_init(void)
/* Initialize the orangefsdev subsystem. */
ret = orangefs_dev_init();
if (ret < 0) {
gossip_err("orangefs: could not initialize device subsystem %d!\n",
gossip_err("%s: could not initialize device subsystem %d!\n",
__func__,
ret);
goto cleanup_inode;
}

Просмотреть файл

@ -75,7 +75,7 @@ retry_servicing:
/*
* If ORANGEFS_OP_NO_MUTEX was set in flags, we need to avoid
* aquiring the request_mutex because we're servicing a
* acquiring the request_mutex because we're servicing a
* high priority remount operation and the request_mutex is
* already taken.
*/
@ -91,7 +91,8 @@ retry_servicing:
if (ret < 0) {
op->downcall.status = ret;
gossip_debug(GOSSIP_WAIT_DEBUG,
"orangefs: service_operation interrupted.\n");
"%s: service_operation interrupted.\n",
__func__);
return ret;
}
}
@ -127,9 +128,9 @@ retry_servicing:
ret,
op);
/* got matching downcall; make sure status is in errno format */
if (!ret) {
spin_unlock(&op->lock);
/* got matching downcall; make sure status is in errno format */
op->downcall.status =
orangefs_normalize_to_errno(op->downcall.status);
ret = op->downcall.status;
@ -144,8 +145,8 @@ retry_servicing:
}
/*
* remove waiting ops from the request list or
* remove in-progress ops from the in-progress list.
* remove a waiting op from the request list or
* remove an in-progress op from the in-progress list.
*/
orangefs_clean_up_interrupted_operation(op);
@ -179,6 +180,7 @@ out:
return ret;
}
/* This can get called on an I/O op if it had a bad service_operation. */
bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op)
{
u64 tag = op->tag;
@ -206,23 +208,31 @@ bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op)
spin_unlock(&op->lock);
spin_unlock(&orangefs_request_list_lock);
gossip_debug(GOSSIP_UTILS_DEBUG,
gossip_debug(GOSSIP_WAIT_DEBUG,
"Attempting ORANGEFS operation cancellation of tag %llu\n",
llu(tag));
return true;
}
static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *op)
/*
* Change an op to the "given up" state and remove it from its list.
*/
static void
orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *op)
{
/*
* handle interrupted cases depending on what state we were in when
* the interruption is detected. there is a coarse grained lock
* across the operation.
* the interruption is detected.
*
* Called with op->lock held.
*/
/*
* List manipulation code elsewhere will ignore ops that
* have been given up upon.
*/
op->op_state |= OP_VFS_STATE_GIVEN_UP;
/* from that point on it can't be moved by anybody else */
if (list_empty(&op->list)) {
/* caught copying to/from daemon */
BUG_ON(op_state_serviced(op));
@ -259,12 +269,12 @@ static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s
}
/*
* sleeps on waitqueue waiting for matching downcall.
* if client-core finishes servicing, then we are good to go.
* Sleeps on waitqueue waiting for matching downcall.
* If client-core finishes servicing, then we are good to go.
* else if client-core exits, we get woken up here, and retry with a timeout
*
* Post when this call returns to the caller, the specified op will no
* longer be on any list or htable.
* When this call returns to the caller, the specified op will no
* longer be in either the in_progress hash table or on the request list.
*
* Returns 0 on success and -errno on failure
* Errors are:
@ -281,6 +291,12 @@ static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op,
{
long n;
/*
* There's a "schedule_timeout" inside of these wait
* primitives, during which the op is out of the hands of the
* user process that needs something done and is being
* manipulated by the client-core process.
*/
if (interruptible)
n = wait_for_completion_interruptible_timeout(&op->waitq,
timeout);