543ade1fc9
This patch cleans up generic_file_*_read/write() interfaces. Christoph Hellwig gave me the idea for this clean ups. In a nutshell, all filesystems should set .aio_read/.aio_write methods and use do_sync_read/ do_sync_write() as their .read/.write methods. This allows us to cleanup all variants of generic_file_* routines. Final available interfaces: generic_file_aio_read() - read handler generic_file_aio_write() - write handler generic_file_aio_write_nolock() - no lock write handler __generic_file_aio_write_nolock() - internal worker routine Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
|
|
* linux/fs/minix/file.c
|
|
*
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
*
|
|
* minix regular file handling primitives
|
|
*/
|
|
|
|
#include <linux/buffer_head.h> /* for fsync_inode_buffers() */
|
|
#include "minix.h"
|
|
|
|
/*
|
|
* We have mostly NULLs here: the current defaults are OK for
|
|
* the minix filesystem.
|
|
*/
|
|
int minix_sync_file(struct file *, struct dentry *, int);
|
|
|
|
const struct file_operations minix_file_operations = {
|
|
.llseek = generic_file_llseek,
|
|
.read = do_sync_read,
|
|
.aio_read = generic_file_aio_read,
|
|
.write = do_sync_write,
|
|
.aio_write = generic_file_aio_write,
|
|
.mmap = generic_file_mmap,
|
|
.fsync = minix_sync_file,
|
|
.sendfile = generic_file_sendfile,
|
|
};
|
|
|
|
struct inode_operations minix_file_inode_operations = {
|
|
.truncate = minix_truncate,
|
|
.getattr = minix_getattr,
|
|
};
|
|
|
|
int minix_sync_file(struct file * file, struct dentry *dentry, int datasync)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
int err;
|
|
|
|
err = sync_mapping_buffers(inode->i_mapping);
|
|
if (!(inode->i_state & I_DIRTY))
|
|
return err;
|
|
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
|
|
return err;
|
|
|
|
err |= minix_sync_inode(inode);
|
|
return err ? -EIO : 0;
|
|
}
|