Commit d1195c51 authored by Pekka J Enberg's avatar Pekka J Enberg Committed by Jens Axboe
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[PATCH] vfs: add splice_write and splice_read to documentation



This patch adds the new splice_write and splice_read file operations to
Documentation/filesystems/vfs.txt.
Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: default avatarJens Axboe <axboe@suse.de>
parent 7519fdc9
......@@ -694,7 +694,7 @@ struct file_operations
----------------------
This describes how the VFS can manipulate an open file. As of kernel
2.6.13, the following members are defined:
2.6.17, the following members are defined:
struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int);
......@@ -723,6 +723,10 @@ struct file_operations {
int (*check_flags)(int);
int (*dir_notify)(struct file *filp, unsigned long arg);
int (*flock) (struct file *, int, struct file_lock *);
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned
int);
ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned
int);
};
Again, all methods are called without any locks being held, unless
......@@ -790,6 +794,12 @@ otherwise noted.
flock: called by the flock(2) system call
splice_write: called by the VFS to splice data from a pipe to a file. This
method is used by the splice(2) system call
splice_read: called by the VFS to splice data from file to a pipe. This
method is used by the splice(2) system call
Note that the file operations are implemented by the specific
filesystem in which the inode resides. When opening a device node
(character or block special) most filesystems will call special
......
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