Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-11 00:08:50 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[PATCH] vfs: add splice_write and splice_read to documentation

Browse Source 
This patch adds the new splice_write and splice_read file operations to
Documentation/filesystems/vfs.txt.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Pekka J Enberg 2006-04-11 14:21:59 +02:00 committed by Jens Axboe
parent 7519fdc90f
commit d1195c516a
1 changed files with 11 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/filesystems/vfs.txt
View File

@ -694,7 +694,7 @@ struct file_operations
---------------------- ----------------------
This describes how the VFS can manipulate an open file. As of kernel 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 { struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int); loff_t (*llseek) (struct file *, loff_t, int);
@ -723,6 +723,10 @@ struct file_operations {
int (*check_flags)(int); int (*check_flags)(int);
int (*dir_notify)(struct file *filp, unsigned long arg); int (*dir_notify)(struct file *filp, unsigned long arg);
int (*flock) (struct file *, int, struct file_lock *); 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 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 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 Note that the file operations are implemented by the specific
filesystem in which the inode resides. When opening a device node filesystem in which the inode resides. When opening a device node
(character or block special) most filesystems will call special (character or block special) most filesystems will call special