Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 24 | #include <linux/quotaops.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Jan Kara | 9df9393 | 2010-01-06 21:58:48 +0100 | [diff] [blame] | 37 | if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) { |
Theodore Ts'o | f7ab34e | 2009-04-03 01:34:35 -0400 | [diff] [blame] | 38 | filemap_flush(inode->i_mapping); |
Jan Kara | 9df9393 | 2010-01-06 21:58:48 +0100 | [diff] [blame] | 39 | ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE); |
Theodore Ts'o | f7ab34e | 2009-04-03 01:34:35 -0400 | [diff] [blame] | 40 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)) |
Mingming Cao | 21fe347 | 2005-06-28 20:45:16 -0700 | [diff] [blame] | 44 | { |
Arjan van de Ven | 9746151 | 2006-03-23 03:00:42 -0800 | [diff] [blame] | 45 | mutex_lock(&EXT3_I(inode)->truncate_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | ext3_discard_reservation(inode); |
Arjan van de Ven | 9746151 | 2006-03-23 03:00:42 -0800 | [diff] [blame] | 47 | mutex_unlock(&EXT3_I(inode)->truncate_mutex); |
Mingming Cao | 21fe347 | 2005-06-28 20:45:16 -0700 | [diff] [blame] | 48 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | if (is_dx(inode) && filp->private_data) |
| 50 | ext3_htree_free_dir_info(filp->private_data); |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 55 | const struct file_operations ext3_file_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | .llseek = generic_file_llseek, |
| 57 | .read = do_sync_read, |
| 58 | .write = do_sync_write, |
| 59 | .aio_read = generic_file_aio_read, |
Jan Kara | e367626 | 2009-08-18 17:51:23 +0200 | [diff] [blame] | 60 | .aio_write = generic_file_aio_write, |
Cyrus Massoumi | 039fd8c | 2009-04-02 16:57:12 -0700 | [diff] [blame] | 61 | .unlocked_ioctl = ext3_ioctl, |
David Howells | 52a700c | 2006-08-29 19:06:23 +0100 | [diff] [blame] | 62 | #ifdef CONFIG_COMPAT |
| 63 | .compat_ioctl = ext3_compat_ioctl, |
| 64 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | .mmap = generic_file_mmap, |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 66 | .open = dquot_file_open, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | .release = ext3_release_file, |
| 68 | .fsync = ext3_sync_file, |
Jens Axboe | 5274f05 | 2006-03-30 15:15:30 +0200 | [diff] [blame] | 69 | .splice_read = generic_file_splice_read, |
| 70 | .splice_write = generic_file_splice_write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | }; |
| 72 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 73 | const struct inode_operations ext3_file_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 82 | .get_acl = ext3_get_acl, |
Josef Bacik | 68c9d70 | 2008-10-03 17:32:43 -0400 | [diff] [blame] | 83 | .fiemap = ext3_fiemap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | }; |
| 85 | |