forked from luck/tmp_suning_uos_patched
Orangefs: clean up slab allocation.
A couple of caches were no longer needed: - iov_iter improvements to orangefs_devreq_write_iter eliminated the need for the dev_req_cache. - removal (months ago) of the old AIO code eliminated the need for the kiocb_cache. Also, deobfuscation of use of GFP_KERNEL when calling kmem_cache_(z)alloc for remaining caches. Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Mike Marshall
parent
5090c9670d
commit
2d4cae0d17
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@ -16,12 +16,6 @@ static DEFINE_SPINLOCK(next_tag_value_lock);
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/* a cache for orangefs upcall/downcall operations */
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static struct kmem_cache *op_cache;
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/* a cache for device (/dev/pvfs2-req) communication */
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static struct kmem_cache *dev_req_cache;
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/* a cache for orangefs_kiocb objects (i.e orangefs iocb structures ) */
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static struct kmem_cache *orangefs_kiocb_cache;
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int op_cache_initialize(void)
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{
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op_cache = kmem_cache_create("orangefs_op_cache",
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@ -111,7 +105,7 @@ struct orangefs_kernel_op_s *op_alloc(__s32 type)
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{
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struct orangefs_kernel_op_s *new_op = NULL;
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new_op = kmem_cache_zalloc(op_cache, ORANGEFS_CACHE_ALLOC_FLAGS);
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new_op = kmem_cache_zalloc(op_cache, GFP_KERNEL);
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if (new_op) {
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INIT_LIST_HEAD(&new_op->list);
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spin_lock_init(&new_op->lock);
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@ -148,7 +142,7 @@ struct orangefs_kernel_op_s *op_alloc(__s32 type)
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new_op->upcall.gid = from_kgid(current_user_ns(),
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current_fsgid());
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} else {
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gossip_err("op_alloc: kmem_cache_alloc failed!\n");
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gossip_err("op_alloc: kmem_cache_zalloc failed!\n");
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}
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return new_op;
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}
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@ -165,85 +159,3 @@ void __op_release(struct orangefs_kernel_op_s *orangefs_op)
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gossip_err("NULL pointer in op_release\n");
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}
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}
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int dev_req_cache_initialize(void)
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{
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dev_req_cache = kmem_cache_create("orangefs_devreqcache",
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MAX_DEV_REQ_DOWNSIZE,
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0,
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ORANGEFS_CACHE_CREATE_FLAGS,
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NULL);
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if (!dev_req_cache) {
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gossip_err("Cannot create orangefs_dev_req_cache\n");
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return -ENOMEM;
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}
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return 0;
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}
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int dev_req_cache_finalize(void)
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{
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kmem_cache_destroy(dev_req_cache);
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return 0;
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}
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void *dev_req_alloc(void)
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{
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void *buffer;
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buffer = kmem_cache_alloc(dev_req_cache, ORANGEFS_CACHE_ALLOC_FLAGS);
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if (buffer == NULL)
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gossip_err("Failed to allocate from dev_req_cache\n");
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else
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memset(buffer, 0, sizeof(MAX_DEV_REQ_DOWNSIZE));
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return buffer;
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}
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void dev_req_release(void *buffer)
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{
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if (buffer)
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kmem_cache_free(dev_req_cache, buffer);
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else
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gossip_err("NULL pointer passed to dev_req_release\n");
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}
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int kiocb_cache_initialize(void)
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{
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orangefs_kiocb_cache = kmem_cache_create("orangefs_kiocbcache",
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sizeof(struct orangefs_kiocb_s),
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0,
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ORANGEFS_CACHE_CREATE_FLAGS,
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NULL);
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if (!orangefs_kiocb_cache) {
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gossip_err("Cannot create orangefs_kiocb_cache!\n");
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return -ENOMEM;
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}
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return 0;
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}
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int kiocb_cache_finalize(void)
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{
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kmem_cache_destroy(orangefs_kiocb_cache);
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return 0;
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}
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struct orangefs_kiocb_s *kiocb_alloc(void)
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{
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struct orangefs_kiocb_s *x = NULL;
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x = kmem_cache_alloc(orangefs_kiocb_cache, ORANGEFS_CACHE_ALLOC_FLAGS);
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if (x == NULL)
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gossip_err("kiocb_alloc: kmem_cache_alloc failed!\n");
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else
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memset(x, 0, sizeof(struct orangefs_kiocb_s));
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return x;
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}
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void kiocb_release(struct orangefs_kiocb_s *x)
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{
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if (x)
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kmem_cache_free(orangefs_kiocb_cache, x);
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else
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gossip_err("kiocb_release: kmem_cache_free NULL pointer!\n");
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}
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@ -128,7 +128,6 @@ struct client_debug_mask {
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#define ORANGEFS_CACHE_CREATE_FLAGS 0
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#endif /* ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) */
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#define ORANGEFS_CACHE_ALLOC_FLAGS (GFP_KERNEL)
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#define ORANGEFS_GFP_FLAGS (GFP_KERNEL)
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#define ORANGEFS_BUFMAP_GFP_FLAGS (GFP_KERNEL)
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@ -207,9 +206,6 @@ struct orangefs_kernel_op_s {
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/* VFS aio fields */
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/* used by the async I/O code to stash the orangefs_kiocb_s structure */
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void *priv;
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int attempts;
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struct list_head list;
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@ -217,6 +213,7 @@ struct orangefs_kernel_op_s {
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#define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING)
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#define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR)
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#define set_op_state_given_up(op) ((op)->op_state = OP_VFS_STATE_GIVEN_UP)
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static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op)
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{
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op->op_state = OP_VFS_STATE_SERVICED;
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@ -453,19 +450,9 @@ int op_cache_finalize(void);
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struct orangefs_kernel_op_s *op_alloc(__s32 type);
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char *get_opname_string(struct orangefs_kernel_op_s *new_op);
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int dev_req_cache_initialize(void);
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int dev_req_cache_finalize(void);
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void *dev_req_alloc(void);
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void dev_req_release(void *);
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int orangefs_inode_cache_initialize(void);
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int orangefs_inode_cache_finalize(void);
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int kiocb_cache_initialize(void);
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int kiocb_cache_finalize(void);
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struct orangefs_kiocb_s *kiocb_alloc(void);
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void kiocb_release(struct orangefs_kiocb_s *ptr);
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/*
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* defined in orangefs-mod.c
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*/
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@ -140,24 +140,16 @@ static int __init orangefs_init(void)
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if (ret < 0)
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goto err;
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ret = dev_req_cache_initialize();
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if (ret < 0)
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goto cleanup_op;
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ret = orangefs_inode_cache_initialize();
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if (ret < 0)
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goto cleanup_req;
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ret = kiocb_cache_initialize();
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if (ret < 0)
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goto cleanup_inode;
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goto cleanup_op;
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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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ret);
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goto cleanup_kiocb;
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goto cleanup_inode;
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}
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htable_ops_in_progress =
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@ -214,15 +206,9 @@ static int __init orangefs_init(void)
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cleanup_device:
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orangefs_dev_cleanup();
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cleanup_kiocb:
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kiocb_cache_finalize();
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cleanup_inode:
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orangefs_inode_cache_finalize();
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cleanup_req:
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dev_req_cache_finalize();
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cleanup_op:
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op_cache_finalize();
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@ -247,9 +233,7 @@ static void __exit orangefs_exit(void)
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for (i = 0; i < hash_table_size; i++)
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BUG_ON(!list_empty(&htable_ops_in_progress[i]));
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kiocb_cache_finalize();
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orangefs_inode_cache_finalize();
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dev_req_cache_finalize();
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op_cache_finalize();
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kfree(htable_ops_in_progress);
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@ -92,8 +92,7 @@ static struct inode *orangefs_alloc_inode(struct super_block *sb)
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{
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struct orangefs_inode_s *orangefs_inode;
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orangefs_inode = kmem_cache_alloc(orangefs_inode_cache,
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ORANGEFS_CACHE_ALLOC_FLAGS);
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orangefs_inode = kmem_cache_alloc(orangefs_inode_cache, GFP_KERNEL);
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if (orangefs_inode == NULL) {
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gossip_err("Failed to allocate orangefs_inode\n");
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return NULL;
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