diff options
Diffstat (limited to 'fs/omfs/file.c')
| -rw-r--r-- | fs/omfs/file.c | 36 |
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 }; |