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Diffstat (limited to 'fs/udf/file.c')
-rw-r--r--fs/udf/file.c25
1 files changed, 11 insertions, 14 deletions
diff --git a/fs/udf/file.c b/fs/udf/file.c
index f77f7681288f..5dadad9960b9 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -99,8 +99,7 @@ static int udf_adinicb_write_begin(struct file *file,
return 0;
}
-static ssize_t udf_adinicb_direct_IO(int rw, struct kiocb *iocb,
- struct iov_iter *iter,
+static ssize_t udf_adinicb_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
{
/* Fallback to buffered I/O. */
@@ -120,21 +119,21 @@ 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(iocb, from);
+ if (retval <= 0)
+ goto out;
+
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);
@@ -142,16 +141,14 @@ 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_file_write_iter(iocb, from);
+out:
mutex_unlock(&inode->i_mutex);
if (retval > 0) {