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![Markus Elfring](/assets/img/avatar_default.png)
Omit an extra message for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
234 lines
5.9 KiB
C
234 lines
5.9 KiB
C
/*
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* (C) 2001 Clemson University and The University of Chicago
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*
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* Changes by Acxiom Corporation to add proc file handler for pvfs2 client
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* parameters, Copyright Acxiom Corporation, 2005.
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*
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* See COPYING in top-level directory.
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*/
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#include "protocol.h"
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#include "orangefs-kernel.h"
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#include "orangefs-debugfs.h"
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#include "orangefs-sysfs.h"
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/* ORANGEFS_VERSION is a ./configure define */
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#ifndef ORANGEFS_VERSION
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#define ORANGEFS_VERSION "upstream"
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#endif
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/*
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* global variables declared here
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*/
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struct orangefs_stats orangefs_stats;
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/* the size of the hash tables for ops in progress */
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int hash_table_size = 509;
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static ulong module_parm_debug_mask;
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__u64 orangefs_gossip_debug_mask;
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int op_timeout_secs = ORANGEFS_DEFAULT_OP_TIMEOUT_SECS;
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int slot_timeout_secs = ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS;
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int orangefs_dcache_timeout_msecs = 50;
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int orangefs_getattr_timeout_msecs = 50;
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("ORANGEFS Development Team");
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MODULE_DESCRIPTION("The Linux Kernel VFS interface to ORANGEFS");
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MODULE_PARM_DESC(module_parm_debug_mask, "debugging level (see orangefs-debug.h for values)");
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MODULE_PARM_DESC(op_timeout_secs, "Operation timeout in seconds");
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MODULE_PARM_DESC(slot_timeout_secs, "Slot timeout in seconds");
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MODULE_PARM_DESC(hash_table_size,
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"size of hash table for operations in progress");
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static struct file_system_type orangefs_fs_type = {
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.name = "pvfs2",
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.mount = orangefs_mount,
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.kill_sb = orangefs_kill_sb,
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.owner = THIS_MODULE,
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};
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module_param(hash_table_size, int, 0);
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module_param(module_parm_debug_mask, ulong, 0644);
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module_param(op_timeout_secs, int, 0);
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module_param(slot_timeout_secs, int, 0);
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/*
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* Blocks non-priority requests from being queued for servicing. This
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* could be used for protecting the request list data structure, but
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* for now it's only being used to stall the op addition to the request
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* list
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*/
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DEFINE_MUTEX(orangefs_request_mutex);
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/* hash table for storing operations waiting for matching downcall */
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struct list_head *orangefs_htable_ops_in_progress;
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DEFINE_SPINLOCK(orangefs_htable_ops_in_progress_lock);
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/* list for queueing upcall operations */
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LIST_HEAD(orangefs_request_list);
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/* used to protect the above orangefs_request_list */
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DEFINE_SPINLOCK(orangefs_request_list_lock);
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/* used for incoming request notification */
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DECLARE_WAIT_QUEUE_HEAD(orangefs_request_list_waitq);
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static int __init orangefs_init(void)
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{
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int ret = -1;
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__u32 i = 0;
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if (op_timeout_secs < 0)
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op_timeout_secs = 0;
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if (slot_timeout_secs < 0)
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slot_timeout_secs = 0;
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/* initialize global book keeping data structures */
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ret = op_cache_initialize();
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if (ret < 0)
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goto out;
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ret = orangefs_inode_cache_initialize();
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if (ret < 0)
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goto cleanup_op;
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orangefs_htable_ops_in_progress =
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kcalloc(hash_table_size, sizeof(struct list_head), GFP_KERNEL);
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if (!orangefs_htable_ops_in_progress) {
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ret = -ENOMEM;
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goto cleanup_inode;
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}
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/* initialize a doubly linked at each hash table index */
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for (i = 0; i < hash_table_size; i++)
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INIT_LIST_HEAD(&orangefs_htable_ops_in_progress[i]);
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ret = fsid_key_table_initialize();
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if (ret < 0)
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goto cleanup_progress_table;
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/*
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* Build the contents of /sys/kernel/debug/orangefs/debug-help
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* from the keywords in the kernel keyword/mask array.
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*
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* The keywords in the client keyword/mask array are
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* unknown at boot time.
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*
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* orangefs_prepare_debugfs_help_string will be used again
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* later to rebuild the debug-help-string after the client starts
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* and passes along the needed info. The argument signifies
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* which time orangefs_prepare_debugfs_help_string is being
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* called.
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*/
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ret = orangefs_prepare_debugfs_help_string(1);
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if (ret)
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goto cleanup_key_table;
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ret = orangefs_debugfs_init(module_parm_debug_mask);
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if (ret)
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goto debugfs_init_failed;
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ret = orangefs_sysfs_init();
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if (ret)
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goto sysfs_init_failed;
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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("%s: could not initialize device subsystem %d!\n",
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__func__,
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ret);
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goto cleanup_device;
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}
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ret = register_filesystem(&orangefs_fs_type);
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if (ret == 0) {
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pr_info("%s: module version %s loaded\n",
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__func__,
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ORANGEFS_VERSION);
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ret = 0;
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goto out;
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}
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orangefs_sysfs_exit();
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cleanup_device:
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orangefs_dev_cleanup();
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sysfs_init_failed:
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debugfs_init_failed:
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orangefs_debugfs_cleanup();
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cleanup_key_table:
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fsid_key_table_finalize();
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cleanup_progress_table:
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kfree(orangefs_htable_ops_in_progress);
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cleanup_inode:
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orangefs_inode_cache_finalize();
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cleanup_op:
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op_cache_finalize();
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out:
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return ret;
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}
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static void __exit orangefs_exit(void)
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{
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int i = 0;
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gossip_debug(GOSSIP_INIT_DEBUG, "orangefs: orangefs_exit called\n");
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unregister_filesystem(&orangefs_fs_type);
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orangefs_debugfs_cleanup();
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orangefs_sysfs_exit();
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fsid_key_table_finalize();
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orangefs_dev_cleanup();
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BUG_ON(!list_empty(&orangefs_request_list));
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for (i = 0; i < hash_table_size; i++)
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BUG_ON(!list_empty(&orangefs_htable_ops_in_progress[i]));
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orangefs_inode_cache_finalize();
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op_cache_finalize();
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kfree(orangefs_htable_ops_in_progress);
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pr_info("orangefs: module version %s unloaded\n", ORANGEFS_VERSION);
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}
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/*
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* What we do in this function is to walk the list of operations
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* that are in progress in the hash table and mark them as purged as well.
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*/
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void purge_inprogress_ops(void)
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{
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int i;
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for (i = 0; i < hash_table_size; i++) {
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struct orangefs_kernel_op_s *op;
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struct orangefs_kernel_op_s *next;
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spin_lock(&orangefs_htable_ops_in_progress_lock);
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list_for_each_entry_safe(op,
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next,
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&orangefs_htable_ops_in_progress[i],
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list) {
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set_op_state_purged(op);
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gossip_debug(GOSSIP_DEV_DEBUG,
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"%s: op:%s: op_state:%d: process:%s:\n",
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__func__,
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get_opname_string(op),
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op->op_state,
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current->comm);
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}
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spin_unlock(&orangefs_htable_ops_in_progress_lock);
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}
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}
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module_init(orangefs_init);
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module_exit(orangefs_exit);
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