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baaf94cdc7
The use of file_fsync() in exofs_file_sync() is not necessary since it does some extra stuff not used by exofs. Open code just the parts that are currently needed. TODO: Farther optimization can be done to sync the sb only on inode update of new files, Usually the sb update is not needed in exofs. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
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* Copyright (C) 2005, 2006
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* Avishay Traeger (avishay@gmail.com)
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* Copyright (C) 2008, 2009
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* Boaz Harrosh <bharrosh@panasas.com>
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*
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* Copyrights for code taken from ext2:
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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* from
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* linux/fs/minix/inode.c
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* This file is part of exofs.
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*
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* exofs is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation. Since it is based on ext2, and the only
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* valid version of GPL for the Linux kernel is version 2, the only valid
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* version of GPL for exofs is version 2.
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*
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* exofs is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with exofs; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/buffer_head.h>
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#include "exofs.h"
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static int exofs_release_file(struct inode *inode, struct file *filp)
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{
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return 0;
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}
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static int exofs_file_fsync(struct file *filp, struct dentry *dentry,
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int datasync)
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{
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int ret;
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struct address_space *mapping = filp->f_mapping;
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struct inode *inode = dentry->d_inode;
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struct super_block *sb;
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ret = filemap_write_and_wait(mapping);
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if (ret)
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return ret;
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/* sync the inode attributes */
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ret = write_inode_now(inode, 1);
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/* This is a good place to write the sb */
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/* TODO: Sechedule an sb-sync on create */
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sb = inode->i_sb;
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if (sb->s_dirt)
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exofs_sync_fs(sb, 1);
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return ret;
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}
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static int exofs_flush(struct file *file, fl_owner_t id)
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{
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exofs_file_fsync(file, file->f_path.dentry, 1);
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/* TODO: Flush the OSD target */
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return 0;
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}
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const struct file_operations exofs_file_operations = {
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.llseek = generic_file_llseek,
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.read = do_sync_read,
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.write = do_sync_write,
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.aio_read = generic_file_aio_read,
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.aio_write = generic_file_aio_write,
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.mmap = generic_file_mmap,
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.open = generic_file_open,
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.release = exofs_release_file,
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.fsync = exofs_file_fsync,
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.flush = exofs_flush,
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.splice_read = generic_file_splice_read,
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.splice_write = generic_file_splice_write,
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};
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const struct inode_operations exofs_file_inode_operations = {
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.truncate = exofs_truncate,
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.setattr = exofs_setattr,
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};
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