diff options
| -rw-r--r-- | fs/udf/file.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/fs/udf/file.c b/fs/udf/file.c index 6834509a7e5a..ccab8b78e363 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -120,21 +120,27 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from) ssize_t retval; struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); - int err, pos; size_t count = iov_iter_count(from); struct udf_inode_info *iinfo = UDF_I(inode); + int err; mutex_lock(&inode->i_mutex); + + retval = generic_write_checks(file, &iocb->ki_pos, &count); + if (retval) + goto out; + + if (count == 0) + goto out; + + iov_iter_truncate(from, count); + down_write(&iinfo->i_data_sem); if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { - if (file->f_flags & O_APPEND) - pos = inode->i_size; - else - pos = iocb->ki_pos; + loff_t end = iocb->ki_pos + iov_iter_count(from); if (inode->i_sb->s_blocksize < - (udf_file_entry_alloc_offset(inode) + - pos + count)) { + (udf_file_entry_alloc_offset(inode) + end)) { err = udf_expand_file_adinicb(inode); if (err) { mutex_unlock(&inode->i_mutex); @@ -142,24 +148,12 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from) return err; } } else { - if (pos + count > inode->i_size) - iinfo->i_lenAlloc = pos + count; - else - iinfo->i_lenAlloc = inode->i_size; + iinfo->i_lenAlloc = max(end, inode->i_size); up_write(&iinfo->i_data_sem); } } else up_write(&iinfo->i_data_sem); - retval = generic_write_checks(file, &iocb->ki_pos, &count); - if (retval) - goto out; - - if (count == 0) - goto out; - - iov_iter_truncate(from, count); - retval = __generic_file_write_iter(iocb, from); out: mutex_unlock(&inode->i_mutex); |