From e806271916ed6068a0e3e4e9298dff0688b88e0d Mon Sep 17 00:00:00 2001 From: Boaz Harrosh Date: Mon, 27 Oct 2008 18:37:02 +0200 Subject: exofs: file and file_inode operations 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 --- fs/exofs/file.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 fs/exofs/file.c (limited to 'fs/exofs/file.c') diff --git a/fs/exofs/file.c b/fs/exofs/file.c new file mode 100644 index 000000000000..6ed7fe484752 --- /dev/null +++ b/fs/exofs/file.c @@ -0,0 +1,87 @@ +/* + * 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 + * + * 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 + +#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, +}; -- cgit v1.2.3