xfs: split the iomap ops for buffered vs direct writes
Instead of lots of magic conditionals in the main write_begin
handler this make the intent very clear. Thing will become even
better once we support delayed allocations for extent size hints
and realtime allocations.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index e3299ff..2465966 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -352,7 +352,7 @@ xfs_file_aio_write_checks(
trace_xfs_zero_eof(ip, isize, iocb->ki_pos - isize);
error = iomap_zero_range(inode, isize, iocb->ki_pos - isize,
- NULL, &xfs_iomap_ops);
+ NULL, &xfs_buffered_write_iomap_ops);
if (error)
return error;
} else
@@ -552,7 +552,8 @@ xfs_file_dio_aio_write(
* If unaligned, this is the only IO in-flight. Wait on it before we
* release the iolock to prevent subsequent overlapping IO.
*/
- ret = iomap_dio_rw(iocb, from, &xfs_iomap_ops, &xfs_dio_write_ops,
+ ret = iomap_dio_rw(iocb, from, &xfs_direct_write_iomap_ops,
+ &xfs_dio_write_ops,
is_sync_kiocb(iocb) || unaligned_io);
out:
xfs_iunlock(ip, iolock);
@@ -592,7 +593,7 @@ xfs_file_dax_write(
count = iov_iter_count(from);
trace_xfs_file_dax_write(ip, count, pos);
- ret = dax_iomap_rw(iocb, from, &xfs_iomap_ops);
+ ret = dax_iomap_rw(iocb, from, &xfs_direct_write_iomap_ops);
if (ret > 0 && iocb->ki_pos > i_size_read(inode)) {
i_size_write(inode, iocb->ki_pos);
error = xfs_setfilesize(ip, pos, ret);
@@ -639,7 +640,8 @@ xfs_file_buffered_aio_write(
current->backing_dev_info = inode_to_bdi(inode);
trace_xfs_file_buffered_write(ip, iov_iter_count(from), iocb->ki_pos);
- ret = iomap_file_buffered_write(iocb, from, &xfs_iomap_ops);
+ ret = iomap_file_buffered_write(iocb, from,
+ &xfs_buffered_write_iomap_ops);
if (likely(ret >= 0))
iocb->ki_pos += ret;
@@ -1156,12 +1158,14 @@ __xfs_filemap_fault(
ret = dax_iomap_fault(vmf, pe_size, &pfn, NULL,
(write_fault && !vmf->cow_page) ?
- &xfs_iomap_ops : &xfs_read_iomap_ops);
+ &xfs_direct_write_iomap_ops :
+ &xfs_read_iomap_ops);
if (ret & VM_FAULT_NEEDDSYNC)
ret = dax_finish_sync_fault(vmf, pe_size, pfn);
} else {
if (write_fault)
- ret = iomap_page_mkwrite(vmf, &xfs_iomap_ops);
+ ret = iomap_page_mkwrite(vmf,
+ &xfs_buffered_write_iomap_ops);
else
ret = filemap_fault(vmf);
}