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-rw-r--r--fs/omfs/file.c36
1 files changed, 33 insertions, 3 deletions
diff --git a/fs/omfs/file.c b/fs/omfs/file.c
index 6e7a3291bbe8..5542c284dc1c 100644
--- a/fs/omfs/file.c
+++ b/fs/omfs/file.c
@@ -312,9 +312,17 @@ static int omfs_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
- *pagep = NULL;
- return block_write_begin(file, mapping, pos, len, flags,
- pagep, fsdata, omfs_get_block);
+ int ret;
+
+ ret = block_write_begin(mapping, pos, len, flags, pagep,
+ omfs_get_block);
+ if (unlikely(ret)) {
+ loff_t isize = mapping->host->i_size;
+ if (pos + len > isize)
+ vmtruncate(mapping->host, isize);
+ }
+
+ return ret;
}
static sector_t omfs_bmap(struct address_space *mapping, sector_t block)
@@ -333,7 +341,29 @@ const struct file_operations omfs_file_operations = {
.splice_read = generic_file_splice_read,
};
+static int omfs_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ error = inode_change_ok(inode, attr);
+ if (error)
+ return error;
+
+ if ((attr->ia_valid & ATTR_SIZE) &&
+ attr->ia_size != i_size_read(inode)) {
+ error = vmtruncate(inode, attr->ia_size);
+ if (error)
+ return error;
+ }
+
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
+ return 0;
+}
+
const struct inode_operations omfs_file_inops = {
+ .setattr = omfs_setattr,
.truncate = omfs_truncate
};