Function report |
Source Code:include\linux\pipe_fs_i.h |
Create Date:2022-07-28 05:52:02 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:pipe_space_for_user - Return number of slots available to userspace*@head: The pipe ring head pointer*@tail: The pipe ring tail pointer*@pipe: The pipe info structure
Proto:static inline unsigned int pipe_space_for_user(unsigned int head, unsigned int tail, struct pipe_inode_info *pipe)
Type:unsigned int
Parameter:
Type | Parameter | Name |
---|---|---|
unsigned int | head | |
unsigned int | tail | |
struct pipe_inode_info * | pipe |
152 | p_occupancy = pipe_occupancy - Return number of slots used in the pipe*@head: The pipe ring head pointer*@tail: The pipe ring tail pointer |
153 | If p_occupancy >= max_usage Then Return 0 |
155 | p_space = ring_size - p_occupancy |
158 | Return p_space |
Name | Describe |
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pipe_get_pages | |
pipe_get_pages_alloc | |
iov_iter_npages |
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