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| author | Pekka J Enberg <penberg@cs.Helsinki.FI> | 2006-04-11 14:21:59 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2006-04-11 14:21:59 +0200 |
| commit | d1195c516a9acd767cb541f914be2c6ddcafcfc1 (patch) | |
| tree | 1edb7afcdee207e34298ec72e0a89b0a66866b2b /Documentation | |
| parent | 7519fdc90fe577cb966ab1ce2bf51ac639f05a0e (diff) | |
| download | lwn-d1195c516a9acd767cb541f914be2c6ddcafcfc1.tar.gz lwn-d1195c516a9acd767cb541f914be2c6ddcafcfc1.zip | |
[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 <penberg@cs.helsinki.fi>
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/vfs.txt | 12 |
1 files changed, 11 insertions, 1 deletions
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 |