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xfs: Use iomap_dio_rw to wait for unaligned direct IO 

Use iomap_dio_rw() to wait for unaligned direct IO instead of opencoding
the wait.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Jan Kara 2019-10-15 08:43:43 -07:00 committed by Darrick J. Wong
parent 13ef954445
commit 906753befc
1 changed files with 4 additions and 8 deletions
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12
fs/xfs/xfs_file.c
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@ -547,16 +547,12 @@ xfs_file_dio_aio_write(
}
trace_xfs_file_direct_write(ip, count, iocb->ki_pos);
ret = iomap_dio_rw(iocb, from, &xfs_iomap_ops, &xfs_dio_write_ops,
is_sync_kiocb(iocb));
/*
* If unaligned, this is the only IO in-flight. If it has not yet
* completed, wait on it before we release the iolock to prevent
* subsequent overlapping IO.
* If unaligned, this is the only IO in-flight. Wait on it before we
* release the iolock to prevent subsequent overlapping IO.
*/
if (ret == -EIOCBQUEUED && unaligned_io)
inode_dio_wait(inode);
ret = iomap_dio_rw(iocb, from, &xfs_iomap_ops, &xfs_dio_write_ops,
is_sync_kiocb(iocb) || unaligned_io);
out:
xfs_iunlock(ip, iolock);