函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\iov_iter.c Create Date:2022-07-27 07:19:35
Last Modify:2022-05-21 11:43:54 Copyright©Brick
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函数名称：pipe_truncate

函数原型：static inline void pipe_truncate(struct iov_iter *i)

返回类型：void

参数：

类型参数名称
struct iov_iter *i
1012  pipe等于pipe
1013  p_tail等于tail
1014  p_head等于head
1015  p_mask等于ring_size减1
1017  如果非pipe_empty - Return true if the pipe is empty*@head: The pipe ring head pointer*@tail: The pipe ring tail pointer则
1019  i_head等于head
1020  off等于iov_offset
1022  如果off则
1023  buf等于bufs[i_head & p_mask]
1024  len等于off减offset
1025  i_head自加
1027  当p_head不等于i_head循环
1028  p_head自减
1029  pipe_buf_release - put a reference to a pipe_buffer*@pipe: the pipe that the buffer belongs to*@buf: the buffer to put a reference to
1032  head等于p_head
调用者
名称描述
pipe_advance
iov_iter_revert