git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/fs/ext3/file.c | |
| 3 | * | |
| 4 | * Copyright (C) 1992, 1993, 1994, 1995 | |
| 5 | * Remy Card (card@masi.ibp.fr) | |
| 6 | * Laboratoire MASI - Institut Blaise Pascal | |
| 7 | * Universite Pierre et Marie Curie (Paris VI) | |
| 8 | * | |
| 9 | * from | |
| 10 | * | |
| 11 | * linux/fs/minix/file.c | |
| 12 | * | |
| 13 | * Copyright (C) 1991, 1992 Linus Torvalds | |
| 14 | * | |
| 15 | * ext3 fs regular file handling primitives | |
| 16 | * | |
| 17 | * 64-bit file support on 64-bit platforms by Jakub Jelinek | |
| 18 | * (jj@sunsite.ms.mff.cuni.cz) | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/time.h> | |
| 22 | #include <linux/fs.h> | |
| 23 | #include <linux/jbd.h> | |
| 871a2931 | 24 | #include <linux/quotaops.h> |
| 1da177e4 LT |
25 | #include <linux/ext3_fs.h> |
| 26 | #include <linux/ext3_jbd.h> | |
| 27 | #include "xattr.h" | |
| 28 | #include "acl.h" | |
| 29 | ||
| 30 | /* | |
| 31 | * Called when an inode is released. Note that this is different | |
| 32 | * from ext3_file_open: open gets called at every open, but release | |
| 33 | * gets called only when /all/ the files are closed. | |
| 34 | */ | |
| 35 | static int ext3_release_file (struct inode * inode, struct file * filp) | |
| 36 | { | |
| 9df93939 | 37 | if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) { |
| f7ab34ea | 38 | filemap_flush(inode->i_mapping); |
| 9df93939 | 39 | ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE); |
| f7ab34ea | 40 | } |
| 1da177e4 LT |
41 | /* if we are the last writer on the inode, drop the block reservation */ |
| 42 | if ((filp->f_mode & FMODE_WRITE) && | |
| 43 | (atomic_read(&inode->i_writecount) == 1)) | |
| 21fe3471 | 44 | { |
| 97461518 | 45 | mutex_lock(&EXT3_I(inode)->truncate_mutex); |
| 1da177e4 | 46 | ext3_discard_reservation(inode); |
| 97461518 | 47 | mutex_unlock(&EXT3_I(inode)->truncate_mutex); |
| 21fe3471 | 48 | } |
| 1da177e4 LT |
49 | if (is_dx(inode) && filp->private_data) |
| 50 | ext3_htree_free_dir_info(filp->private_data); | |
| 51 | ||
| 52 | return 0; | |
| 53 | } | |
| 54 | ||
| 4b6f5d20 | 55 | const struct file_operations ext3_file_operations = { |
| 1da177e4 LT |
56 | .llseek = generic_file_llseek, |
| 57 | .read = do_sync_read, | |
| 58 | .write = do_sync_write, | |
| 59 | .aio_read = generic_file_aio_read, | |
| e367626b | 60 | .aio_write = generic_file_aio_write, |
| 039fd8ce | 61 | .unlocked_ioctl = ext3_ioctl, |
| 52a700c5 DH |
62 | #ifdef CONFIG_COMPAT |
| 63 | .compat_ioctl = ext3_compat_ioctl, | |
| 64 | #endif | |
| 1da177e4 | 65 | .mmap = generic_file_mmap, |
| 907f4554 | 66 | .open = dquot_file_open, |
| 1da177e4 LT |
67 | .release = ext3_release_file, |
| 68 | .fsync = ext3_sync_file, | |
| 5274f052 JA |
69 | .splice_read = generic_file_splice_read, |
| 70 | .splice_write = generic_file_splice_write, | |
| 1da177e4 LT |
71 | }; |
| 72 | ||
| 754661f1 | 73 | const struct inode_operations ext3_file_inode_operations = { |
| 1da177e4 LT |
74 | .truncate = ext3_truncate, |
| 75 | .setattr = ext3_setattr, | |
| 76 | #ifdef CONFIG_EXT3_FS_XATTR | |
| 77 | .setxattr = generic_setxattr, | |
| 78 | .getxattr = generic_getxattr, | |
| 79 | .listxattr = ext3_listxattr, | |
| 80 | .removexattr = generic_removexattr, | |
| 81 | #endif | |
| 1d5ccd1c | 82 | .check_acl = ext3_check_acl, |
| 68c9d702 | 83 | .fiemap = ext3_fiemap, |
| 1da177e4 LT |
84 | }; |
| 85 |