e806271916
implementation of the file_operations and inode_operations for regular data files. Most file_operations are generic vfs implementations except: - exofs_truncate will truncate the OSD object as well - Generic file_fsync is not good for none_bd devices so open code it - The default for .flush in Linux is todo nothing so call exofs_fsync on the file. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/*
|
|
* Copyright (C) 2005, 2006
|
|
* Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
|
|
* Copyright (C) 2005, 2006
|
|
* International Business Machines
|
|
* Copyright (C) 2008, 2009
|
|
* Boaz Harrosh <bharrosh@panasas.com>
|
|
*
|
|
* Copyrights for code taken from ext2:
|
|
* Copyright (C) 1992, 1993, 1994, 1995
|
|
* Remy Card (card@masi.ibp.fr)
|
|
* Laboratoire MASI - Institut Blaise Pascal
|
|
* Universite Pierre et Marie Curie (Paris VI)
|
|
* from
|
|
* linux/fs/minix/inode.c
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
*
|
|
* This file is part of exofs.
|
|
*
|
|
* exofs is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation. Since it is based on ext2, and the only
|
|
* valid version of GPL for the Linux kernel is version 2, the only valid
|
|
* version of GPL for exofs is version 2.
|
|
*
|
|
* exofs is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with exofs; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <linux/buffer_head.h>
|
|
|
|
#include "exofs.h"
|
|
|
|
static int exofs_release_file(struct inode *inode, struct file *filp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int exofs_file_fsync(struct file *filp, struct dentry *dentry,
|
|
int datasync)
|
|
{
|
|
int ret;
|
|
struct address_space *mapping = filp->f_mapping;
|
|
|
|
ret = filemap_write_and_wait(mapping);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*Note: file_fsync below also calles sync_blockdev, which is a no-op
|
|
* for exofs, but other then that it does sync_inode and
|
|
* sync_superblock which is what we need here.
|
|
*/
|
|
return file_fsync(filp, dentry, datasync);
|
|
}
|
|
|
|
static int exofs_flush(struct file *file, fl_owner_t id)
|
|
{
|
|
exofs_file_fsync(file, file->f_path.dentry, 1);
|
|
/* TODO: Flush the OSD target */
|
|
return 0;
|
|
}
|
|
|
|
const struct file_operations exofs_file_operations = {
|
|
.llseek = generic_file_llseek,
|
|
.read = do_sync_read,
|
|
.write = do_sync_write,
|
|
.aio_read = generic_file_aio_read,
|
|
.aio_write = generic_file_aio_write,
|
|
.mmap = generic_file_mmap,
|
|
.open = generic_file_open,
|
|
.release = exofs_release_file,
|
|
.fsync = exofs_file_fsync,
|
|
.flush = exofs_flush,
|
|
.splice_read = generic_file_splice_read,
|
|
.splice_write = generic_file_splice_write,
|
|
};
|
|
|
|
const struct inode_operations exofs_file_inode_operations = {
|
|
.truncate = exofs_truncate,
|
|
.setattr = exofs_setattr,
|
|
};
|