---
name: "io_uring_prep_remove_buffers"
section: "3"
platform: "linux"
package: "liburing"
version: "2.15-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/io_uring_prep_remove_buffers"
---

# io\_uring\_prep\_remove\_buffers(3)

prepare a remove buffers request

## NAME

io\_uring\_prep\_remove\_buffers - prepare a remove buffers request

## SYNOPSIS

```
#include <liburing.h>
```

**void io\_uring\_prep\_remove\_buffers(struct io\_uring\_sqe \****sqe***,**                                    **int** *nr***,**                                    **int** *bgid***);**

## DESCRIPTION

The [**io\_uring\_prep\_remove\_buffers**(3)](/io_uring_prep_remove_buffers/3.md) function prepares a request for removing previously supplied buffers. The submission queue entry *sqe* is setup to remove *nr* number of buffers from the buffer group ID indicated by *bgid*.

## RETURN VALUE

None

## ERRORS

These are the errors that are reported in the CQE *res* field. On success, *res* will contain the number of successfully removed buffers. On error, the following errors can occur.

- **-ENOMEM**

  The kernel was unable to allocate memory for the request.

- **-EINVAL**

  One of the fields set in the SQE was invalid.

- **-ENOENT**

  No buffers exist at the specified *bgid* buffer group ID.

## SEE ALSO

[**io\_uring\_get\_sqe**(3)](/io_uring_get_sqe/3.md), [**io\_uring\_submit**(3)](/io_uring_submit/3.md), [**io\_uring\_register**(2)](/io_uring_register/2.md), [**io\_uring\_prep\_provide\_buffers**(3)](/io_uring_prep_provide_buffers/3.md)