xfs_file_aio_write_checks: switch to iocb/iov_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 43c0e66..ebde43e 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -544,17 +544,18 @@
*/
STATIC ssize_t
xfs_file_aio_write_checks(
- struct file *file,
- loff_t *pos,
- size_t *count,
+ struct kiocb *iocb,
+ struct iov_iter *from,
int *iolock)
{
+ struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
struct xfs_inode *ip = XFS_I(inode);
int error = 0;
+ size_t count = iov_iter_count(from);
restart:
- error = generic_write_checks(file, pos, count);
+ error = generic_write_checks(file, &iocb->ki_pos, &count);
if (error)
return error;
@@ -569,7 +570,7 @@
* iolock shared, we need to update it to exclusive which implies
* having to redo all checks before.
*/
- if (*pos > i_size_read(inode)) {
+ if (iocb->ki_pos > i_size_read(inode)) {
bool zero = false;
if (*iolock == XFS_IOLOCK_SHARED) {
@@ -578,10 +579,11 @@
xfs_rw_ilock(ip, *iolock);
goto restart;
}
- error = xfs_zero_eof(ip, *pos, i_size_read(inode), &zero);
+ error = xfs_zero_eof(ip, iocb->ki_pos, i_size_read(inode), &zero);
if (error)
return error;
}
+ iov_iter_truncate(from, count);
/*
* Updating the timestamps will grab the ilock again from
@@ -678,10 +680,11 @@
xfs_rw_ilock(ip, iolock);
}
- ret = xfs_file_aio_write_checks(file, &pos, &count, &iolock);
+ ret = xfs_file_aio_write_checks(iocb, from, &iolock);
if (ret)
goto out;
- iov_iter_truncate(from, count);
+ count = iov_iter_count(from);
+ pos = iocb->ki_pos;
if (mapping->nrpages) {
ret = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
@@ -734,24 +737,22 @@
ssize_t ret;
int enospc = 0;
int iolock = XFS_IOLOCK_EXCL;
- loff_t pos = iocb->ki_pos;
- size_t count = iov_iter_count(from);
xfs_rw_ilock(ip, iolock);
- ret = xfs_file_aio_write_checks(file, &pos, &count, &iolock);
+ ret = xfs_file_aio_write_checks(iocb, from, &iolock);
if (ret)
goto out;
- iov_iter_truncate(from, count);
/* We can write back this queue in page reclaim */
current->backing_dev_info = inode_to_bdi(inode);
write_retry:
- trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, 0);
- ret = generic_perform_write(file, from, pos);
+ trace_xfs_file_buffered_write(ip, iov_iter_count(from),
+ iocb->ki_pos, 0);
+ ret = generic_perform_write(file, from, iocb->ki_pos);
if (likely(ret >= 0))
- iocb->ki_pos = pos + ret;
+ iocb->ki_pos += ret;
/*
* If we hit a space limit, try to free up some lingering preallocated