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io_uring/rsrc: extract SCM file put helper 

SCM file accounting is a slow path and is only used for UNIX files.
Extract a helper out of io_rsrc_file_put() that does the SCM
unaccounting.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/58cc7bffc2ee96bec8c2b89274a51febcbfa5556.1681210788.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2023-04-11 12:06:08 +01:00 committed by Jens Axboe
parent 2933ae6eaa
commit d581076b6a
1 changed files with 11 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
io_uring/rsrc.c
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@ -832,20 +832,14 @@ int __io_scm_file_account(struct io_ring_ctx *ctx, struct file *file)
return 0;
}
static void io_rsrc_file_put(struct io_ring_ctx *ctx, struct io_rsrc_put *prsrc)
static __cold void io_rsrc_file_scm_put(struct io_ring_ctx *ctx, struct file *file)
{
struct file *file = prsrc->file;
#if defined(CONFIG_UNIX)
struct sock *sock = ctx->ring_sock->sk;
struct sk_buff_head list, *head = &sock->sk_receive_queue;
struct sk_buff *skb;
int i;
if (!io_file_need_scm(file)) {
fput(file);
return;
}
__skb_queue_head_init(&list);
/*
@ -895,11 +889,19 @@ static void io_rsrc_file_put(struct io_ring_ctx *ctx, struct io_rsrc_put *prsrc)
__skb_queue_tail(head, skb);
spin_unlock_irq(&head->lock);
}
#else
fput(file);
#endif
}
static void io_rsrc_file_put(struct io_ring_ctx *ctx, struct io_rsrc_put *prsrc)
{
struct file *file = prsrc->file;
if (likely(!io_file_need_scm(file)))
fput(file);
else
io_rsrc_file_scm_put(ctx, file);
}
int io_sqe_files_register(struct io_ring_ctx *ctx, void __user *arg,
unsigned nr_args, u64 __user *tags)
{