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Documentation/filesystems/vfs.txt: update file_operations documentation 

->readv, ->writev and ->sendfile have been removed while ->show_fdinfo
has been added. The documentation should reflect this.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Richard Yao 2014-01-30 15:46:12 -08:00 committed by Linus Torvalds
parent 778c14affa
commit 46bf16c44b
1 changed files with 2 additions and 10 deletions
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12
Documentation/filesystems/vfs.txt
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@ -782,7 +782,7 @@ struct file_operations
----------------------
This describes how the VFS can manipulate an open file. As of kernel
3.5, the following members are defined:
3.12, the following members are defined:
struct file_operations {
struct module *owner;
@ -803,9 +803,6 @@ struct file_operations {
int (*aio_fsync) (struct kiocb *, int datasync);
int (*fasync) (int, struct file *, int);
int (*lock) (struct file *, int, struct file_lock *);
ssize_t (*readv) (struct file *, const struct iovec *, unsigned long, loff_t *);
ssize_t (*writev) (struct file *, const struct iovec *, unsigned long, loff_t *);
ssize_t (*sendfile) (struct file *, loff_t *, size_t, read_actor_t, void *);
ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
int (*check_flags)(int);
@ -814,6 +811,7 @@ struct file_operations {
ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
int (*setlease)(struct file *, long arg, struct file_lock **);
long (*fallocate)(struct file *, int mode, loff_t offset, loff_t len);
int (*show_fdinfo)(struct seq_file *m, struct file *f);
};
Again, all methods are called without any locks being held, unless
@ -864,12 +862,6 @@ otherwise noted.
lock: called by the fcntl(2) system call for F_GETLK, F_SETLK, and F_SETLKW
commands
readv: called by the readv(2) system call
writev: called by the writev(2) system call
sendfile: called by the sendfile(2) system call
get_unmapped_area: called by the mmap(2) system call
check_flags: called by the fcntl(2) system call for F_SETFL command