函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace.c Create Date:2022-07-27 13:09:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：buffer_ref_release

函数原型：static void buffer_ref_release(struct buffer_ref *ref)

返回类型：void

参数：

类型参数名称
struct buffer_ref *ref
7446  如果非_dec_and_test - decrement a refcount and test if it is 0*@r: the refcount* Similar to atomic_dec_and_test(), it will WARN on underflow and fail to* decrement when saturated at REFCOUNT_SATURATED则返回
7448  g_buffer_free_read_page - free an allocated read page*@buffer: the buffer the page was allocate for*@cpu: the cpu buffer the page came from*@data: the page to free* Free a page allocated from ring_buffer_alloc_read_page.
7449  kfree(ref)
调用者
名称描述
buffer_pipe_buf_release
buffer_spd_releaseCallback from splice_to_pipe(), if we need to release some pages* at the end of the spd in case we error'ed out in filling the pipe.