| | 1 | /* |
| | 2 | * Copyright (C) 2005, 2006 |
| | 3 | * Avishay Traeger (avishay@gmail.com) |
| | 4 | * Copyright (C) 2008, 2009 |
| | 5 | * Boaz Harrosh <ooo@electrozaur.com> |
| | 6 | * |
| | 7 | * Copyrights for code taken from ext2: |
| | 8 | * Copyright (C) 1992, 1993, 1994, 1995 |
| | 9 | * Remy Card (card@masi.ibp.fr) |
| | 10 | * Laboratoire MASI - Institut Blaise Pascal |
| | 11 | * Universite Pierre et Marie Curie (Paris VI) |
| | 12 | * from |
| | 13 | * linux/fs/minix/inode.c |
| | 14 | * Copyright (C) 1991, 1992 Linus Torvalds |
| | 15 | * |
| | 16 | * This file is part of exofs. |
| | 17 | * |
| | 18 | * exofs is free software; you can redistribute it and/or modify |
| | 19 | * it under the terms of the GNU General Public License as published by |
| | 20 | * the Free Software Foundation. Since it is based on ext2, and the only |
| | 21 | * valid version of GPL for the Linux kernel is version 2, the only valid |
| | 22 | * version of GPL for exofs is version 2. |
| | 23 | * |
| | 24 | * exofs is distributed in the hope that it will be useful, |
| | 25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 27 | * GNU General Public License for more details. |
| | 28 | * |
| | 29 | * You should have received a copy of the GNU General Public License |
| | 30 | * along with exofs; if not, write to the Free Software |
| | 31 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| | 32 | */ |
| | 33 | #include "exofs.h" |
| | 34 | |
| | 35 | static int exofs_release_file(struct inode *inode, struct file *filp) |
| | 36 | { |
| | 37 | return 0; |
| | 38 | } |
| | 39 | |
| | 40 | /* exofs_file_fsync - flush the inode to disk |
| | 41 | * |
| | 42 | * Note, in exofs all metadata is written as part of inode, regardless. |
| | 43 | * The writeout is synchronous |
| | 44 | */ |
| | 45 | static int exofs_file_fsync(struct file *filp, loff_t start, loff_t end, |
| | 46 | int datasync) |
| | 47 | { |
| | 48 | struct inode *inode = filp->f_mapping->host; |
| | 49 | int ret; |
| | 50 | |
| | 51 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
| | 52 | if (ret) |
| | 53 | return ret; |
| | 54 | |
| | 55 | inode_lock(inode); |
| | 56 | ret = sync_inode_metadata(filp->f_mapping->host, 1); |
| | 57 | inode_unlock(inode); |
| | 58 | return ret; |
| | 59 | } |
| | 60 | |
| | 61 | static int exofs_flush(struct file *file, fl_owner_t id) |
| | 62 | { |
| | 63 | int ret = vfs_fsync(file, 0); |
| | 64 | /* TODO: Flush the OSD target */ |
| | 65 | return ret; |
| | 66 | } |
| | 67 | |
| | 68 | const struct file_operations exofs_file_operations = { |
| | 69 | .llseek = generic_file_llseek, |
| | 70 | .read_iter = generic_file_read_iter, |
| | 71 | .write_iter = generic_file_write_iter, |
| | 72 | .mmap = generic_file_mmap, |
| | 73 | .open = generic_file_open, |
| | 74 | .release = exofs_release_file, |
| | 75 | .fsync = exofs_file_fsync, |
| | 76 | .flush = exofs_flush, |
| | 77 | .splice_read = generic_file_splice_read, |
| | 78 | .splice_write = iter_file_splice_write, |
| | 79 | }; |
| | 80 | |
| | 81 | const struct inode_operations exofs_file_inode_operations = { |
| | 82 | .setattr = exofs_setattr, |
| | 83 | }; |
projects / linux-2.6-block.git / blame_incremental