// SPDX-License-Identifier: GPL-2.0-only /* * (C) 2001 Clemson University and The University of Chicago * * Changes by Acxiom Corporation to add proc file handler for pvfs2 client * parameters, Copyright Acxiom Corporation, 2005. * * See COPYING in top-level directory.
*/
/* ORANGEFS_VERSION is a ./configure define */ #ifndef ORANGEFS_VERSION #define ORANGEFS_VERSION "upstream" #endif
/* * global variables declared here
*/
struct orangefs_stats orangefs_stats;
/* the size of the hash tables for ops in progress */ int hash_table_size = 509;
static ulong module_parm_debug_mask;
__u64 orangefs_gossip_debug_mask; int op_timeout_secs = ORANGEFS_DEFAULT_OP_TIMEOUT_SECS; int slot_timeout_secs = ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS; int orangefs_cache_timeout_msecs = 500; int orangefs_dcache_timeout_msecs = 50; int orangefs_getattr_timeout_msecs = 50;
MODULE_LICENSE("GPL");
MODULE_AUTHOR("ORANGEFS Development Team");
MODULE_DESCRIPTION("The Linux Kernel VFS interface to ORANGEFS");
MODULE_PARM_DESC(module_parm_debug_mask, "debugging level (see orangefs-debug.h for values)");
MODULE_PARM_DESC(op_timeout_secs, "Operation timeout in seconds");
MODULE_PARM_DESC(slot_timeout_secs, "Slot timeout in seconds");
MODULE_PARM_DESC(hash_table_size, "size of hash table for operations in progress");
/* * Blocks non-priority requests from being queued for servicing. This * could be used for protecting the request list data structure, but * for now it's only being used to stall the op addition to the request * list
*/
DEFINE_MUTEX(orangefs_request_mutex);
/* hash table for storing operations waiting for matching downcall */ struct list_head *orangefs_htable_ops_in_progress;
DEFINE_SPINLOCK(orangefs_htable_ops_in_progress_lock);
/* list for queueing upcall operations */
LIST_HEAD(orangefs_request_list);
/* used to protect the above orangefs_request_list */
DEFINE_SPINLOCK(orangefs_request_list_lock);
/* used for incoming request notification */
DECLARE_WAIT_QUEUE_HEAD(orangefs_request_list_waitq);
staticint __init orangefs_init(void)
{ int ret;
__u32 i = 0;
if (op_timeout_secs < 0)
op_timeout_secs = 0;
if (slot_timeout_secs < 0)
slot_timeout_secs = 0;
/* initialize global book keeping data structures */
ret = op_cache_initialize(); if (ret < 0) goto out;
ret = orangefs_inode_cache_initialize(); if (ret < 0) goto cleanup_op;
orangefs_htable_ops_in_progress =
kcalloc(hash_table_size, sizeof(struct list_head), GFP_KERNEL); if (!orangefs_htable_ops_in_progress) {
ret = -ENOMEM; goto cleanup_inode;
}
/* initialize a doubly linked at each hash table index */ for (i = 0; i < hash_table_size; i++)
INIT_LIST_HEAD(&orangefs_htable_ops_in_progress[i]);
ret = fsid_key_table_initialize(); if (ret < 0) goto cleanup_progress_table;
/* * Build the contents of /sys/kernel/debug/orangefs/debug-help * from the keywords in the kernel keyword/mask array. * * The keywords in the client keyword/mask array are * unknown at boot time. * * orangefs_prepare_debugfs_help_string will be used again * later to rebuild the debug-help-string after the client starts * and passes along the needed info. The argument signifies * which time orangefs_prepare_debugfs_help_string is being * called.
*/
ret = orangefs_prepare_debugfs_help_string(1); if (ret) goto cleanup_key_table;
orangefs_debugfs_init(module_parm_debug_mask);
ret = orangefs_sysfs_init(); if (ret) goto sysfs_init_failed;
/* Initialize the orangefsdev subsystem. */
ret = orangefs_dev_init(); if (ret < 0) {
gossip_err("%s: could not initialize device subsystem %d!\n",
__func__,
ret); goto cleanup_sysfs;
}
ret = register_filesystem(&orangefs_fs_type); if (ret == 0) {
pr_info("%s: module version %s loaded\n",
__func__,
ORANGEFS_VERSION); goto out;
}
staticvoid __exit orangefs_exit(void)
{ int i = 0;
gossip_debug(GOSSIP_INIT_DEBUG, "orangefs: orangefs_exit called\n");
unregister_filesystem(&orangefs_fs_type);
orangefs_debugfs_cleanup();
orangefs_sysfs_exit();
fsid_key_table_finalize();
orangefs_dev_cleanup();
BUG_ON(!list_empty(&orangefs_request_list)); for (i = 0; i < hash_table_size; i++)
BUG_ON(!list_empty(&orangefs_htable_ops_in_progress[i]));
pr_info("orangefs: module version %s unloaded\n", ORANGEFS_VERSION);
}
/* * What we do in this function is to walk the list of operations * that are in progress in the hash table and mark them as purged as well.
*/ void purge_inprogress_ops(void)
{ int i;
for (i = 0; i < hash_table_size; i++) { struct orangefs_kernel_op_s *op; struct orangefs_kernel_op_s *next;
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