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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> |
24 | #include <linux/quotaops.h> |
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 | { |
37 | if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) { |
38 | filemap_flush(inode->i_mapping); |
39 | ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE); |
40 | } |
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)) |
44 | { |
45 | mutex_lock(&EXT3_I(inode)->truncate_mutex); |
46 | ext3_discard_reservation(inode); |
47 | mutex_unlock(&EXT3_I(inode)->truncate_mutex); |
48 | } |
49 | if (is_dx(inode) && filp->private_data) |
50 | ext3_htree_free_dir_info(filp->private_data); |
51 | |
52 | return 0; |
53 | } |
54 | |
55 | const struct file_operations ext3_file_operations = { |
56 | .llseek = generic_file_llseek, |
57 | .read = do_sync_read, |
58 | .write = do_sync_write, |
59 | .aio_read = generic_file_aio_read, |
60 | .aio_write = generic_file_aio_write, |
61 | .unlocked_ioctl = ext3_ioctl, |
62 | #ifdef CONFIG_COMPAT |
63 | .compat_ioctl = ext3_compat_ioctl, |
64 | #endif |
65 | .mmap = generic_file_mmap, |
66 | .open = dquot_file_open, |
67 | .release = ext3_release_file, |
68 | .fsync = ext3_sync_file, |
69 | .splice_read = generic_file_splice_read, |
70 | .splice_write = generic_file_splice_write, |
71 | }; |
72 | |
73 | const struct inode_operations ext3_file_inode_operations = { |
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 |
82 | .check_acl = ext3_check_acl, |
83 | .fiemap = ext3_fiemap, |
84 | }; |
85 | |
86 |
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