From: Bijan Mottahedeh <[email protected]>
To: [email protected], [email protected], [email protected]
Subject: [PATCH v5 03/13] io_uring: separate ref_list from fixed_rsrc_data
Date: Tue, 12 Jan 2021 13:33:03 -0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Uplevel ref_list and make it common to all resources. This is to
allow one common ref_list to be used for both files, and buffers
in upcoming patches.
Signed-off-by: Bijan Mottahedeh <[email protected]>
---
fs/io_uring.c | 35 ++++++++++++++++++-----------------
1 file changed, 18 insertions(+), 17 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 12eede8..158b53f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -231,8 +231,6 @@ struct fixed_rsrc_data {
struct fixed_rsrc_ref_node *node;
struct percpu_ref refs;
struct completion done;
- struct list_head ref_list;
- spinlock_t lock;
};
struct io_buffer {
@@ -400,6 +398,8 @@ struct io_ring_ctx {
struct delayed_work rsrc_put_work;
struct llist_head rsrc_put_llist;
+ struct list_head rsrc_ref_list;
+ spinlock_t rsrc_ref_lock;
struct work_struct exit_work;
struct io_restriction restrictions;
@@ -1328,6 +1328,8 @@ static struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
INIT_LIST_HEAD(&ctx->timeout_list);
spin_lock_init(&ctx->inflight_lock);
INIT_LIST_HEAD(&ctx->inflight_list);
+ spin_lock_init(&ctx->rsrc_ref_lock);
+ INIT_LIST_HEAD(&ctx->rsrc_ref_list);
INIT_DELAYED_WORK(&ctx->rsrc_put_work, io_rsrc_put_work);
init_llist_head(&ctx->rsrc_put_llist);
return ctx;
@@ -7258,13 +7260,14 @@ static void io_rsrc_ref_kill(struct percpu_ref *ref)
complete(&data->done);
}
-static void io_sqe_rsrc_set_node(struct fixed_rsrc_data *rsrc_data,
+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)
{
- spin_lock_bh(&rsrc_data->lock);
+ spin_lock_bh(&ctx->rsrc_ref_lock);
rsrc_data->node = ref_node;
- list_add_tail(&ref_node->node, &rsrc_data->ref_list);
- spin_unlock_bh(&rsrc_data->lock);
+ list_add_tail(&ref_node->node, &ctx->rsrc_ref_list);
+ spin_unlock_bh(&ctx->rsrc_ref_lock);
percpu_ref_get(&rsrc_data->refs);
}
@@ -7281,9 +7284,9 @@ static int io_sqe_files_unregister(struct io_ring_ctx *ctx)
if (!backup_node)
return -ENOMEM;
- spin_lock_bh(&data->lock);
+ spin_lock_bh(&ctx->rsrc_ref_lock);
ref_node = data->node;
- spin_unlock_bh(&data->lock);
+ spin_unlock_bh(&ctx->rsrc_ref_lock);
if (ref_node)
percpu_ref_kill(&ref_node->refs);
@@ -7299,7 +7302,7 @@ static int io_sqe_files_unregister(struct io_ring_ctx *ctx)
if (ret < 0) {
percpu_ref_resurrect(&data->refs);
reinit_completion(&data->done);
- io_sqe_rsrc_set_node(data, backup_node);
+ io_sqe_rsrc_set_node(ctx, data, backup_node);
return ret;
}
} while (1);
@@ -7673,11 +7676,11 @@ static void io_rsrc_data_ref_zero(struct percpu_ref *ref)
data = ref_node->rsrc_data;
ctx = data->ctx;
- spin_lock_bh(&data->lock);
+ spin_lock_bh(&ctx->rsrc_ref_lock);
ref_node->done = true;
- while (!list_empty(&data->ref_list)) {
- ref_node = list_first_entry(&data->ref_list,
+ while (!list_empty(&ctx->rsrc_ref_list)) {
+ ref_node = list_first_entry(&ctx->rsrc_ref_list,
struct fixed_rsrc_ref_node, node);
/* recycle ref nodes in order */
if (!ref_node->done)
@@ -7685,7 +7688,7 @@ static void io_rsrc_data_ref_zero(struct percpu_ref *ref)
list_del(&ref_node->node);
first_add |= llist_add(&ref_node->llist, &ctx->rsrc_put_llist);
}
- spin_unlock_bh(&data->lock);
+ spin_unlock_bh(&ctx->rsrc_ref_lock);
if (percpu_ref_is_dying(&data->refs))
delay = 0;
@@ -7746,8 +7749,6 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
return -ENOMEM;
file_data->ctx = ctx;
init_completion(&file_data->done);
- INIT_LIST_HEAD(&file_data->ref_list);
- spin_lock_init(&file_data->lock);
nr_tables = DIV_ROUND_UP(nr_args, IORING_MAX_FILES_TABLE);
file_data->table = kcalloc(nr_tables, sizeof(*file_data->table),
@@ -7808,7 +7809,7 @@ static int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
return PTR_ERR(ref_node);
}
- io_sqe_rsrc_set_node(file_data, ref_node);
+ io_sqe_rsrc_set_node(ctx, file_data, ref_node);
return ret;
out_fput:
for (i = 0; i < ctx->nr_user_files; i++) {
@@ -7969,7 +7970,7 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
if (needs_switch) {
percpu_ref_kill(&data->node->refs);
- io_sqe_rsrc_set_node(data, ref_node);
+ io_sqe_rsrc_set_node(ctx, data, ref_node);
} else
destroy_fixed_rsrc_ref_node(ref_node);
--
1.8.3.1
next prev parent reply other threads:[~2021-01-12 21:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 21:33 [PATCH v5 00/13] io_uring: buffer registration enhancements Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 01/13] io_uring: rename file related variables to rsrc Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 02/13] io_uring: generalize io_queue_rsrc_removal Bijan Mottahedeh
2021-01-12 21:33 ` Bijan Mottahedeh [this message]
2021-01-12 21:33 ` [PATCH v5 04/13] io_uring: split alloc_fixed_file_ref_node Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 05/13] io_uring: add rsrc_ref locking routines Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 06/13] io_uring: implement fixed buffers registration similar to fixed files Bijan Mottahedeh
2021-01-15 17:41 ` Pavel Begunkov
2021-01-12 21:33 ` [PATCH v5 07/13] io_uring: create common fixed_rsrc_ref_node handling routines Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 08/13] io_uring: generalize files_update functionlity to rsrc_update Bijan Mottahedeh
2021-01-16 18:20 ` Pavel Begunkov
2021-01-12 21:33 ` [PATCH v5 09/13] io_uring: support buffer registration updates Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 10/13] io_uring: create common fixed_rsrc_data allocation routines Bijan Mottahedeh
2021-01-16 18:26 ` Pavel Begunkov
2021-01-12 21:33 ` [PATCH v5 11/13] io_uring: make percpu_ref_release names consistent Bijan Mottahedeh
2021-01-12 21:33 ` [PATCH v5 12/13] io_uring: call io_get_fixed_rsrc_ref for buffers Bijan Mottahedeh
2021-01-15 17:44 ` Pavel Begunkov
2021-01-12 21:33 ` [PATCH v5 13/13] io_uring: support buffer registration sharing Bijan Mottahedeh
2021-01-14 2:01 ` Bijan Mottahedeh
2021-01-14 21:17 ` Bijan Mottahedeh
2021-01-16 18:30 ` Pavel Begunkov
2021-01-14 21:20 ` [PATCH v5 00/13] io_uring: buffer registration enhancements Pavel Begunkov
2021-01-14 22:44 ` Bijan Mottahedeh
2021-01-14 22:54 ` Bijan Mottahedeh
2021-01-15 4:42 ` Pavel Begunkov
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