pipe_buf identifier - Linux source code next-20260811

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linux

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FIXME
- FIXME
  - next-20260811

Documented in 1 files:

include/linux/pipe_fs_i.h, line 247

Defined in 1 files as a function:

include/linux/pipe_fs_i.h, line 252 (as a function)

Referenced in 5 files:

Smatch caller information:

fs/splice.c add_to_pipe() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
CAPPED_DATA	0	pipe->max_usage	1
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
UNITS	1	slot	unit_array_size

fs/splice.c eat_empty_buffer() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size

fs/splice.c iter_file_splice_write() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
HALF_LOCKED2		&inode->i_rwsem

fs/splice.c iter_file_splice_write() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
HALF_LOCKED2		&inode->i_rwsem

fs/splice.c link_pipe() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING

fs/splice.c link_pipe() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
CAPPED_DATA	0	pipe->max_usage	1
DATA_SOURCE	0	pipe	$1
RX_PATH
TASK_NOT_RUNNING
UNITS	1	slot	unit_array_size

fs/splice.c pipe_head_buf() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
UNITS	1	slot	unit_array_size

fs/splice.c splice_from_pipe_feed() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size

fs/splice.c splice_pipe_to_pipe() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING

fs/splice.c splice_pipe_to_pipe() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
CAPPED_DATA	0	pipe->max_usage	1
DATA_SOURCE	0	pipe	$1
RX_PATH
TASK_NOT_RUNNING
UNITS	1	slot	unit_array_size

fs/splice.c splice_to_pipe() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
CAPPED_DATA	0	pipe->max_usage	1
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
UNITS	1	slot	unit_array_size
HALF_LOCKED2		sk

fs/splice.c splice_to_socket() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
HALF_LOCKED2		&inode->i_rwsem

fs/splice.c splice_to_socket() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
HALF_LOCKED2		&inode->i_rwsem

mm/shmem.c pipe_head_buf() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
UNITS	1	slot	unit_array_size

fs/pipe.c anon_pipe_read() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
CAPPED_DATA	0	&pipe->mutex	1
RX_PATH
TASK_NOT_RUNNING
LOCK2	0	&pipe->mutex
HALF_LOCKED2		&pool->lock
TYPE_LOCK		(struct pipe_inode_info)->mutex

fs/pipe.c anon_pipe_write() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
RX_PATH
TASK_NOT_RUNNING
LOCK2	0	&pipe->mutex
HALF_LOCKED2		&pool->lock
TYPE_LOCK		(struct pipe_inode_info)->mutex

fs/pipe.c anon_pipe_write() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
CAPPED_DATA	0	pipe->max_usage	1
RX_PATH
TASK_NOT_RUNNING
UNITS	1	slot	unit_array_size
LOCK2	0	&pipe->mutex
HALF_LOCKED2		&pool->lock
TYPE_LOCK		(struct pipe_inode_info)->mutex

fs/pipe.c pipe_ioctl() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
BUF_SIZE	0	pipe	s32min-(-2),1-s32max
CAPPED_DATA	0	&pipe->mutex	1
LOCK2	0	&pipe->mutex
TYPE_LOCK		(struct pipe_inode_info)->mutex

kernel/watch_queue.c post_one_notification() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
PARAM_VALUE	0	pipe->ring_size	1-u32max
CAPPED_DATA	0	pipe->ring_size	1
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
UNITS	1	slot	unit_array_size
LOCK2		&wqueue->lock
LOCK2		bh
LOCK2		irq
LOCK2		rcu_read
LOCK2	0	&pipe->rd_wait.lock
HALF_LOCKED2		&key->sem
TYPE_LOCK		(struct wait_queue_head)->lock
TYPE_LOCK		(struct watch_queue)->lock

kernel/watch_queue.c post_one_notification() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
CAPPED_DATA	0	pipe->ring_size	1
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
LOCK2		&wqueue->lock
LOCK2		bh
LOCK2		irq
LOCK2		rcu_read
LOCK2	0	&pipe->rd_wait.lock
HALF_LOCKED2		&key->sem
TYPE_LOCK		(struct wait_queue_head)->lock
TYPE_LOCK		(struct watch_queue)->lock

mm/filemap.c pipe_head_buf() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
UNITS	1	slot	unit_array_size

fs/fuse/dev.c fuse_dev_splice_write() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
HALF_LOCKED2		&inode->i_rwsem

fs/fuse/dev.c fuse_dev_splice_write() -> pipe_buf()

Type	Parameter	Key	Value
PARAM_VALUE	0	pipe	4096-ptr_max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
BUF_SIZE	0	pipe	s32min-(-1),1-s32max
DATA_SOURCE	0	pipe	$0
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE	0	pipe->max_usage
NO_OVERFLOW_SIMPLE	0	pipe->nr_accounted
NO_OVERFLOW_SIMPLE	0	pipe->ring_size
HALF_LOCKED2		&inode->i_rwsem