2 * (C) 2001 Clemson University and The University of Chicago
4 * See COPYING in top-level directory.
8 #include "orangefs-kernel.h"
10 /* tags assigned to kernel upcall operations */
11 static __u64 next_tag_value;
12 static DEFINE_SPINLOCK(next_tag_value_lock);
14 /* the orangefs memory caches */
16 /* a cache for orangefs upcall/downcall operations */
17 static struct kmem_cache *op_cache;
19 /* a cache for device (/dev/pvfs2-req) communication */
20 static struct kmem_cache *dev_req_cache;
22 /* a cache for orangefs_kiocb objects (i.e orangefs iocb structures ) */
23 static struct kmem_cache *orangefs_kiocb_cache;
25 int op_cache_initialize(void)
27 op_cache = kmem_cache_create("orangefs_op_cache",
28 sizeof(struct orangefs_kernel_op_s),
30 ORANGEFS_CACHE_CREATE_FLAGS,
34 gossip_err("Cannot create orangefs_op_cache\n");
38 /* initialize our atomic tag counter */
39 spin_lock(&next_tag_value_lock);
41 spin_unlock(&next_tag_value_lock);
45 int op_cache_finalize(void)
47 kmem_cache_destroy(op_cache);
51 char *get_opname_string(struct orangefs_kernel_op_s *new_op)
54 __s32 type = new_op->upcall.type;
56 if (type == ORANGEFS_VFS_OP_FILE_IO)
58 else if (type == ORANGEFS_VFS_OP_LOOKUP)
60 else if (type == ORANGEFS_VFS_OP_CREATE)
62 else if (type == ORANGEFS_VFS_OP_GETATTR)
64 else if (type == ORANGEFS_VFS_OP_REMOVE)
66 else if (type == ORANGEFS_VFS_OP_MKDIR)
68 else if (type == ORANGEFS_VFS_OP_READDIR)
70 else if (type == ORANGEFS_VFS_OP_READDIRPLUS)
71 return "OP_READDIRPLUS";
72 else if (type == ORANGEFS_VFS_OP_SETATTR)
74 else if (type == ORANGEFS_VFS_OP_SYMLINK)
76 else if (type == ORANGEFS_VFS_OP_RENAME)
78 else if (type == ORANGEFS_VFS_OP_STATFS)
80 else if (type == ORANGEFS_VFS_OP_TRUNCATE)
82 else if (type == ORANGEFS_VFS_OP_MMAP_RA_FLUSH)
83 return "OP_MMAP_RA_FLUSH";
84 else if (type == ORANGEFS_VFS_OP_FS_MOUNT)
86 else if (type == ORANGEFS_VFS_OP_FS_UMOUNT)
87 return "OP_FS_UMOUNT";
88 else if (type == ORANGEFS_VFS_OP_GETXATTR)
90 else if (type == ORANGEFS_VFS_OP_SETXATTR)
92 else if (type == ORANGEFS_VFS_OP_LISTXATTR)
93 return "OP_LISTXATTR";
94 else if (type == ORANGEFS_VFS_OP_REMOVEXATTR)
95 return "OP_REMOVEXATTR";
96 else if (type == ORANGEFS_VFS_OP_PARAM)
98 else if (type == ORANGEFS_VFS_OP_PERF_COUNT)
99 return "OP_PERF_COUNT";
100 else if (type == ORANGEFS_VFS_OP_CANCEL)
102 else if (type == ORANGEFS_VFS_OP_FSYNC)
104 else if (type == ORANGEFS_VFS_OP_FSKEY)
107 return "OP_UNKNOWN?";
110 struct orangefs_kernel_op_s *op_alloc(__s32 type)
112 struct orangefs_kernel_op_s *new_op = NULL;
114 new_op = kmem_cache_zalloc(op_cache, ORANGEFS_CACHE_ALLOC_FLAGS);
116 INIT_LIST_HEAD(&new_op->list);
117 spin_lock_init(&new_op->lock);
118 init_waitqueue_head(&new_op->waitq);
120 atomic_set(&new_op->ref_count, 1);
122 init_completion(&new_op->done);
124 new_op->upcall.type = ORANGEFS_VFS_OP_INVALID;
125 new_op->downcall.type = ORANGEFS_VFS_OP_INVALID;
126 new_op->downcall.status = -1;
128 new_op->op_state = OP_VFS_STATE_UNKNOWN;
131 /* initialize the op specific tag and upcall credentials */
132 spin_lock(&next_tag_value_lock);
133 new_op->tag = next_tag_value++;
134 if (next_tag_value == 0)
135 next_tag_value = 100;
136 spin_unlock(&next_tag_value_lock);
137 new_op->upcall.type = type;
138 new_op->attempts = 0;
139 gossip_debug(GOSSIP_CACHE_DEBUG,
140 "Alloced OP (%p: %llu %s)\n",
143 get_opname_string(new_op));
145 new_op->upcall.uid = from_kuid(current_user_ns(),
148 new_op->upcall.gid = from_kgid(current_user_ns(),
151 gossip_err("op_alloc: kmem_cache_alloc failed!\n");
156 void __op_release(struct orangefs_kernel_op_s *orangefs_op)
159 gossip_debug(GOSSIP_CACHE_DEBUG,
160 "Releasing OP (%p: %llu)\n",
162 llu(orangefs_op->tag));
163 kmem_cache_free(op_cache, orangefs_op);
165 gossip_err("NULL pointer in op_release\n");
169 int dev_req_cache_initialize(void)
171 dev_req_cache = kmem_cache_create("orangefs_devreqcache",
172 MAX_DEV_REQ_DOWNSIZE,
174 ORANGEFS_CACHE_CREATE_FLAGS,
177 if (!dev_req_cache) {
178 gossip_err("Cannot create orangefs_dev_req_cache\n");
184 int dev_req_cache_finalize(void)
186 kmem_cache_destroy(dev_req_cache);
190 void *dev_req_alloc(void)
194 buffer = kmem_cache_alloc(dev_req_cache, ORANGEFS_CACHE_ALLOC_FLAGS);
196 gossip_err("Failed to allocate from dev_req_cache\n");
198 memset(buffer, 0, sizeof(MAX_DEV_REQ_DOWNSIZE));
202 void dev_req_release(void *buffer)
205 kmem_cache_free(dev_req_cache, buffer);
207 gossip_err("NULL pointer passed to dev_req_release\n");
210 int kiocb_cache_initialize(void)
212 orangefs_kiocb_cache = kmem_cache_create("orangefs_kiocbcache",
213 sizeof(struct orangefs_kiocb_s),
215 ORANGEFS_CACHE_CREATE_FLAGS,
218 if (!orangefs_kiocb_cache) {
219 gossip_err("Cannot create orangefs_kiocb_cache!\n");
225 int kiocb_cache_finalize(void)
227 kmem_cache_destroy(orangefs_kiocb_cache);
231 struct orangefs_kiocb_s *kiocb_alloc(void)
233 struct orangefs_kiocb_s *x = NULL;
235 x = kmem_cache_alloc(orangefs_kiocb_cache, ORANGEFS_CACHE_ALLOC_FLAGS);
237 gossip_err("kiocb_alloc: kmem_cache_alloc failed!\n");
239 memset(x, 0, sizeof(struct orangefs_kiocb_s));
243 void kiocb_release(struct orangefs_kiocb_s *x)
246 kmem_cache_free(orangefs_kiocb_cache, x);
248 gossip_err("kiocb_release: kmem_cache_free NULL pointer!\n");