diff options
Diffstat (limited to 'mm/nommu.c')
-rw-r--r-- | mm/nommu.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 8d484241d034..56a446f05971 100644 --- a/mm/nommu.c +++ b/mm/nommu.c | |||
@@ -83,46 +83,6 @@ struct vm_operations_struct generic_file_vm_ops = { | |||
83 | }; | 83 | }; |
84 | 84 | ||
85 | /* | 85 | /* |
86 | * Handle all mappings that got truncated by a "truncate()" | ||
87 | * system call. | ||
88 | * | ||
89 | * NOTE! We have to be ready to update the memory sharing | ||
90 | * between the file and the memory map for a potential last | ||
91 | * incomplete page. Ugly, but necessary. | ||
92 | */ | ||
93 | int vmtruncate(struct inode *inode, loff_t offset) | ||
94 | { | ||
95 | struct address_space *mapping = inode->i_mapping; | ||
96 | unsigned long limit; | ||
97 | |||
98 | if (inode->i_size < offset) | ||
99 | goto do_expand; | ||
100 | i_size_write(inode, offset); | ||
101 | |||
102 | truncate_inode_pages(mapping, offset); | ||
103 | goto out_truncate; | ||
104 | |||
105 | do_expand: | ||
106 | limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; | ||
107 | if (limit != RLIM_INFINITY && offset > limit) | ||
108 | goto out_sig; | ||
109 | if (offset > inode->i_sb->s_maxbytes) | ||
110 | goto out; | ||
111 | i_size_write(inode, offset); | ||
112 | |||
113 | out_truncate: | ||
114 | if (inode->i_op->truncate) | ||
115 | inode->i_op->truncate(inode); | ||
116 | return 0; | ||
117 | out_sig: | ||
118 | send_sig(SIGXFSZ, current, 0); | ||
119 | out: | ||
120 | return -EFBIG; | ||
121 | } | ||
122 | |||
123 | EXPORT_SYMBOL(vmtruncate); | ||
124 | |||
125 | /* | ||
126 | * Return the total memory allocated for this pointer, not | 86 | * Return the total memory allocated for this pointer, not |
127 | * just what the caller asked for. | 87 | * just what the caller asked for. |
128 | * | 88 | * |