From d1195c516a9acd767cb541f914be2c6ddcafcfc1 Mon Sep 17 00:00:00 2001 From: Pekka J Enberg Date: Tue, 11 Apr 2006 14:21:59 +0200 Subject: [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: Pekka Enberg Signed-off-by: Jens Axboe --- Documentation/filesystems/vfs.txt | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index adaa899e5c90..3a2e5520c1e3 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -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 -- cgit v1.2.2