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提交 b895c9a6 编写于 作者: P Pavel Begunkov 提交者： Jens Axboe
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io_uring: name rsrc bits consistently 

Keep resource related structs' and functions' naming consistent, in
particular use "io_rsrc" prefix for everything.
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/962f5acdf810f3a62831e65da3932cde24f6d9df.1617287883.git.asml.silence@gmail.comSigned-off-by: NJens Axboe <axboe@kernel.dk>
上级 c80ca470
隐藏空白更改
内联 并排
Showing with 71 addition and 79 deletion
fs/io_uring.c
浏览文件 @ b895c9a6
......@@ -219,22 +219,22 @@ struct fixed_rsrc_table {
struct file **files;
};
struct fixed_rsrc_ref_node {
struct io_rsrc_node {
struct percpu_ref refs;
struct list_head node;
struct list_head rsrc_list;
struct fixed_rsrc_data *rsrc_data;
struct io_rsrc_data *rsrc_data;
void (*rsrc_put)(struct io_ring_ctx *ctx,
struct io_rsrc_put *prsrc);
struct llist_node llist;
bool done;
};
struct fixed_rsrc_data {
struct io_rsrc_data {
struct fixed_rsrc_table *table;
struct io_ring_ctx *ctx;
struct fixed_rsrc_ref_node *node;
struct io_rsrc_node *node;
struct percpu_ref refs;
struct completion done;
bool quiesce;
......@@ -393,7 +393,7 @@ struct io_ring_ctx {
* readers must ensure that ->refs is alive as long as the file* is
* used. Only updated through io_uring_register(2).
*/
struct fixed_rsrc_data *file_data;
struct io_rsrc_data *file_data;
unsigned nr_user_files;
/* if used, fixed mapped user buffers */
......@@ -447,7 +447,7 @@ struct io_ring_ctx {
struct llist_head rsrc_put_llist;
struct list_head rsrc_ref_list;
spinlock_t rsrc_ref_lock;
struct fixed_rsrc_ref_node *rsrc_backup_node;
struct io_rsrc_node *rsrc_backup_node;
struct io_restriction restrictions;
......@@ -1027,9 +1027,8 @@ static void io_uring_try_cancel_requests(struct io_ring_ctx *ctx,
struct task_struct *task,
struct files_struct *files);
static void io_uring_cancel_sqpoll(struct io_ring_ctx *ctx);
static void destroy_fixed_rsrc_ref_node(struct fixed_rsrc_ref_node *ref_node);
static struct fixed_rsrc_ref_node *alloc_fixed_rsrc_ref_node(
struct io_ring_ctx *ctx);
static void io_rsrc_node_destroy(struct io_rsrc_node *ref_node);
static struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx);
static void io_ring_file_put(struct io_ring_ctx *ctx, struct io_rsrc_put *prsrc);
static void io_cqring_fill_event(struct io_kiocb *req, long res);
......@@ -1075,7 +1074,7 @@ EXPORT_SYMBOL(io_uring_get_socket);
#define io_for_each_link(pos, head) \
for (pos = (head); pos; pos = pos->link)
static inline void io_set_resource_node(struct io_kiocb *req)
static inline void io_req_set_rsrc_node(struct io_kiocb *req)
{
struct io_ring_ctx *ctx = req->ctx;
......@@ -6287,7 +6286,7 @@ static void io_wq_submit_work(struct io_wq_work *work)
#endif
#define FFS_MASK ~(FFS_ASYNC_READ|FFS_ASYNC_WRITE|FFS_ISREG)
static inline struct file **io_fixed_file_slot(struct fixed_rsrc_data *file_data,
static inline struct file **io_fixed_file_slot(struct io_rsrc_data *file_data,
unsigned i)
{
struct fixed_rsrc_table *table;
......@@ -6321,7 +6320,7 @@ static struct file *io_file_get(struct io_submit_state *state,
file_ptr &= ~FFS_MASK;
/* mask in overlapping REQ_F and FFS bits */
req->flags |= (file_ptr << REQ_F_ASYNC_READ_BIT);
io_set_resource_node(req);
io_req_set_rsrc_node(req);
} else {
trace_io_uring_file_get(ctx, fd);
file = __io_file_get(state, fd);
......@@ -7078,9 +7077,8 @@ static void __io_sqe_files_unregister(struct io_ring_ctx *ctx)
static void io_rsrc_data_ref_zero(struct percpu_ref *ref)
{
struct fixed_rsrc_data *data;
struct io_rsrc_data *data = container_of(ref, struct io_rsrc_data, refs);
data = container_of(ref, struct fixed_rsrc_data, refs);
complete(&data->done);
}
......@@ -7094,20 +7092,20 @@ static inline void io_rsrc_ref_unlock(struct io_ring_ctx *ctx)
spin_unlock_bh(&ctx->rsrc_ref_lock);
}
static void io_sqe_rsrc_set_node(struct io_ring_ctx *ctx,
struct fixed_rsrc_data *rsrc_data,
struct fixed_rsrc_ref_node *ref_node)
static void io_rsrc_node_set(struct io_ring_ctx *ctx,
struct io_rsrc_data *rsrc_data,
struct io_rsrc_node *rsrc_node)
{
io_rsrc_ref_lock(ctx);
rsrc_data->node = ref_node;
list_add_tail(&ref_node->node, &ctx->rsrc_ref_list);
rsrc_data->node = rsrc_node;
list_add_tail(&rsrc_node->node, &ctx->rsrc_ref_list);
io_rsrc_ref_unlock(ctx);
percpu_ref_get(&rsrc_data->refs);
}
static void io_sqe_rsrc_kill_node(struct io_ring_ctx *ctx, struct fixed_rsrc_data *data)
static void io_rsrc_node_kill(struct io_ring_ctx *ctx, struct io_rsrc_data *data)
{
struct fixed_rsrc_ref_node *ref_node = NULL;
struct io_rsrc_node *ref_node = NULL;
io_rsrc_ref_lock(ctx);
ref_node = data->node;
......@@ -7117,21 +7115,21 @@ static void io_sqe_rsrc_kill_node(struct io_ring_ctx *ctx, struct fixed_rsrc_dat
percpu_ref_kill(&ref_node->refs);
}
static int io_rsrc_refnode_prealloc(struct io_ring_ctx *ctx)
static int io_rsrc_node_prealloc(struct io_ring_ctx *ctx)
{
if (ctx->rsrc_backup_node)
return 0;
ctx->rsrc_backup_node = alloc_fixed_rsrc_ref_node(ctx);
ctx->rsrc_backup_node = io_rsrc_node_alloc(ctx);
return ctx->rsrc_backup_node ? 0 : -ENOMEM;
}
static struct fixed_rsrc_ref_node *
io_rsrc_refnode_get(struct io_ring_ctx *ctx,
struct fixed_rsrc_data *rsrc_data,
void (*rsrc_put)(struct io_ring_ctx *ctx,
struct io_rsrc_put *prsrc))
static struct io_rsrc_node *
io_rsrc_node_get(struct io_ring_ctx *ctx,
struct io_rsrc_data *rsrc_data,
void (*rsrc_put)(struct io_ring_ctx *ctx,
struct io_rsrc_put *prsrc))
{
struct fixed_rsrc_ref_node *node = ctx->rsrc_backup_node;
struct io_rsrc_node *node = ctx->rsrc_backup_node;
WARN_ON_ONCE(!node);
......@@ -7141,12 +7139,12 @@ io_rsrc_refnode_get(struct io_ring_ctx *ctx,
return node;
}
static int io_rsrc_ref_quiesce(struct fixed_rsrc_data *data,
static int io_rsrc_ref_quiesce(struct io_rsrc_data *data,
struct io_ring_ctx *ctx,
void (*rsrc_put)(struct io_ring_ctx *ctx,
struct io_rsrc_put *prsrc))
{
struct fixed_rsrc_ref_node *node;
struct io_rsrc_node *node;
int ret;
if (data->quiesce)
......@@ -7154,10 +7152,10 @@ static int io_rsrc_ref_quiesce(struct fixed_rsrc_data *data,
data->quiesce = true;
do {
ret = io_rsrc_refnode_prealloc(ctx);
ret = io_rsrc_node_prealloc(ctx);
if (ret)
break;
io_sqe_rsrc_kill_node(ctx, data);
io_rsrc_node_kill(ctx, data);
percpu_ref_kill(&data->refs);
flush_delayed_work(&ctx->rsrc_put_work);
......@@ -7166,8 +7164,8 @@ static int io_rsrc_ref_quiesce(struct fixed_rsrc_data *data,
break;
percpu_ref_resurrect(&data->refs);
node = io_rsrc_refnode_get(ctx, data, rsrc_put);
io_sqe_rsrc_set_node(ctx, data, node);
node = io_rsrc_node_get(ctx, data, rsrc_put);
io_rsrc_node_set(ctx, data, node);
reinit_completion(&data->done);
mutex_unlock(&ctx->uring_lock);
......@@ -7179,9 +7177,9 @@ static int io_rsrc_ref_quiesce(struct fixed_rsrc_data *data,
return ret;
}
static struct fixed_rsrc_data *alloc_fixed_rsrc_data(struct io_ring_ctx *ctx)
static struct io_rsrc_data *io_rsrc_data_alloc(struct io_ring_ctx *ctx)
{
struct fixed_rsrc_data *data;
struct io_rsrc_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
......@@ -7197,7 +7195,7 @@ static struct fixed_rsrc_data *alloc_fixed_rsrc_data(struct io_ring_ctx *ctx)
return data;
}
static void free_fixed_rsrc_data(struct fixed_rsrc_data *data)
static void io_rsrc_data_free(struct io_rsrc_data *data)
{
percpu_ref_exit(&data->refs);
kfree(data->table);
......@@ -7206,7 +7204,7 @@ static void free_fixed_rsrc_data(struct fixed_rsrc_data *data)
static int io_sqe_files_unregister(struct io_ring_ctx *ctx)
{
struct fixed_rsrc_data *data = ctx->file_data;
struct io_rsrc_data *data = ctx->file_data;
unsigned nr_tables, i;
int ret;
......@@ -7225,7 +7223,7 @@ static int io_sqe_files_unregister(struct io_ring_ctx *ctx)
nr_tables = DIV_ROUND_UP(ctx->nr_user_files, IORING_MAX_FILES_TABLE);
for (i = 0; i < nr_tables; i++)
kfree(data->table[i].files);
free_fixed_rsrc_data(data);
io_rsrc_data_free(data);
ctx->file_data = NULL;
ctx->nr_user_files = 0;
return 0;
......@@ -7454,7 +7452,7 @@ static int io_sqe_files_scm(struct io_ring_ctx *ctx)
}
#endif
static int io_sqe_alloc_file_tables(struct fixed_rsrc_data *file_data,
static int io_sqe_alloc_file_tables(struct io_rsrc_data *file_data,
unsigned nr_tables, unsigned nr_files)
{
int i;
......@@ -7544,9 +7542,9 @@ static void io_ring_file_put(struct io_ring_ctx *ctx, struct io_rsrc_put *prsrc)
#endif
}
static void __io_rsrc_put_work(struct fixed_rsrc_ref_node *ref_node)
static void __io_rsrc_put_work(struct io_rsrc_node *ref_node)
{
struct fixed_rsrc_data *rsrc_data = ref_node->rsrc_data;
struct io_rsrc_data *rsrc_data = ref_node->rsrc_data;
struct io_ring_ctx *ctx = rsrc_data->ctx;
struct io_rsrc_put *prsrc, *tmp;
......@@ -7570,10 +7568,10 @@ static void io_rsrc_put_work(struct work_struct *work)
node = llist_del_all(&ctx->rsrc_put_llist);
while (node) {
struct fixed_rsrc_ref_node *ref_node;
struct io_rsrc_node *ref_node;
struct llist_node *next = node->next;
ref_node = llist_entry(node, struct fixed_rsrc_ref_node, llist);
ref_node = llist_entry(node, struct io_rsrc_node, llist);
__io_rsrc_put_work(ref_node);
node = next;
}
......@@ -7581,27 +7579,23 @@ static void io_rsrc_put_work(struct work_struct *work)
static void io_rsrc_node_ref_zero(struct percpu_ref *ref)
{
struct fixed_rsrc_ref_node *ref_node;
struct fixed_rsrc_data *data;
struct io_ring_ctx *ctx;
struct io_rsrc_node *node = container_of(ref, struct io_rsrc_node, refs);
struct io_rsrc_data *data = node->rsrc_data;
struct io_ring_ctx *ctx = data->ctx;
bool first_add = false;
int delay = HZ;
ref_node = container_of(ref, struct fixed_rsrc_ref_node, refs);
data = ref_node->rsrc_data;
ctx = data->ctx;
io_rsrc_ref_lock(ctx);
ref_node->done = true;
node->done = true;
while (!list_empty(&ctx->rsrc_ref_list)) {
ref_node = list_first_entry(&ctx->rsrc_ref_list,
struct fixed_rsrc_ref_node, node);
node = list_first_entry(&ctx->rsrc_ref_list,
struct io_rsrc_node, node);
/* recycle ref nodes in order */
if (!ref_node->done)
if (!node->done)
break;
list_del(&ref_node->node);
first_add |= llist_add(&ref_node->llist, &ctx->rsrc_put_llist);
list_del(&node->node);
first_add |= llist_add(&node->llist, &ctx->rsrc_put_llist);
}
io_rsrc_ref_unlock(ctx);
......@@ -7614,10 +7608,9 @@ static void io_rsrc_node_ref_zero(struct percpu_ref *ref)
queue_delayed_work(system_wq, &ctx->rsrc_put_work, delay);
}
static struct fixed_rsrc_ref_node *alloc_fixed_rsrc_ref_node(
struct io_ring_ctx *ctx)
static struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx)
{
struct fixed_rsrc_ref_node *ref_node;
struct io_rsrc_node *ref_node;
ref_node = kzalloc(sizeof(*ref_node), GFP_KERNEL);
if (!ref_node)
......@@ -7635,19 +7628,18 @@ static struct fixed_rsrc_ref_node *alloc_fixed_rsrc_ref_node(
}
static void init_fixed_file_ref_node(struct io_ring_ctx *ctx,
struct fixed_rsrc_ref_node *ref_node)
struct io_rsrc_node *ref_node)
{
ref_node->rsrc_data = ctx->file_data;
ref_node->rsrc_put = io_ring_file_put;
}
static void destroy_fixed_rsrc_ref_node(struct fixed_rsrc_ref_node *ref_node)
static void io_rsrc_node_destroy(struct io_rsrc_node *ref_node)
{
percpu_ref_exit(&ref_node->refs);
kfree(ref_node);
}
static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
unsigned nr_args)
{
......@@ -7655,8 +7647,8 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
unsigned nr_tables, i;
struct file *file;
int fd, ret = -ENOMEM;
struct fixed_rsrc_ref_node *ref_node;
struct fixed_rsrc_data *file_data;
struct io_rsrc_node *ref_node;
struct io_rsrc_data *file_data;
if (ctx->file_data)
return -EBUSY;
......@@ -7665,7 +7657,7 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
if (nr_args > IORING_MAX_FIXED_FILES)
return -EMFILE;
file_data = alloc_fixed_rsrc_data(ctx);
file_data = io_rsrc_data_alloc(ctx);
if (!file_data)
return -ENOMEM;
ctx->file_data = file_data;
......@@ -7722,14 +7714,14 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
return ret;
}
ref_node = alloc_fixed_rsrc_ref_node(ctx);
ref_node = io_rsrc_node_alloc(ctx);
if (!ref_node) {
io_sqe_files_unregister(ctx);
return -ENOMEM;
}
init_fixed_file_ref_node(ctx, ref_node);
io_sqe_rsrc_set_node(ctx, file_data, ref_node);
io_rsrc_node_set(ctx, file_data, ref_node);
return ret;
out_fput:
for (i = 0; i < ctx->nr_user_files; i++) {
......@@ -7741,7 +7733,7 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
kfree(file_data->table[i].files);
ctx->nr_user_files = 0;
out_free:
free_fixed_rsrc_data(ctx->file_data);
io_rsrc_data_free(ctx->file_data);
ctx->file_data = NULL;
return ret;
}
......@@ -7789,10 +7781,10 @@ static int io_sqe_file_register(struct io_ring_ctx *ctx, struct file *file,
#endif
}
static int io_queue_rsrc_removal(struct fixed_rsrc_data *data, void *rsrc)
static int io_queue_rsrc_removal(struct io_rsrc_data *data, void *rsrc)
{
struct io_rsrc_put *prsrc;
struct fixed_rsrc_ref_node *ref_node = data->node;
struct io_rsrc_node *ref_node = data->node;
prsrc = kzalloc(sizeof(*prsrc), GFP_KERNEL);
if (!prsrc)
......@@ -7804,7 +7796,7 @@ static int io_queue_rsrc_removal(struct fixed_rsrc_data *data, void *rsrc)
return 0;
}
static inline int io_queue_file_removal(struct fixed_rsrc_data *data,
static inline int io_queue_file_removal(struct io_rsrc_data *data,
struct file *file)
{
return io_queue_rsrc_removal(data, (void *)file);
......@@ -7814,8 +7806,8 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
struct io_uring_rsrc_update *up,
unsigned nr_args)
{
struct fixed_rsrc_data *data = ctx->file_data;
struct fixed_rsrc_ref_node *ref_node;
struct io_rsrc_data *data = ctx->file_data;
struct io_rsrc_node *ref_node;
struct file *file, **file_slot;
__s32 __user *fds;
int fd, i, err;
......@@ -7826,7 +7818,7 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
return -EOVERFLOW;
if (done > ctx->nr_user_files)
return -EINVAL;
err = io_rsrc_refnode_prealloc(ctx);
err = io_rsrc_node_prealloc(ctx);
if (err)
return err;
......@@ -7882,8 +7874,8 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
if (needs_switch) {
percpu_ref_kill(&data->node->refs);
ref_node = io_rsrc_refnode_get(ctx, data, io_ring_file_put);
io_sqe_rsrc_set_node(ctx, data, ref_node);
ref_node = io_rsrc_node_get(ctx, data, io_ring_file_put);
io_rsrc_node_set(ctx, data, ref_node);
}
return done ? done : err;
}
......@@ -8559,7 +8551,7 @@ static void io_ring_ctx_free(struct io_ring_ctx *ctx)
io_destroy_buffers(ctx);
if (ctx->rsrc_backup_node)
destroy_fixed_rsrc_ref_node(ctx->rsrc_backup_node);
io_rsrc_node_destroy(ctx->rsrc_backup_node);
#if defined(CONFIG_UNIX)
if (ctx->ring_sock) {
......
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