/*
* for completing the rest of the request.
*/
- *ppos += written;
count -= written;
written_buffered = generic_perform_write(file, from, *ppos);
/*
goto out_dio;
}
- iocb->ki_pos = *ppos + written_buffered;
/* We need to ensure that the page cache pages are written to
* disk and invalidated to preserve the expected O_DIRECT
* semantics.
ret = filemap_write_and_wait_range(file->f_mapping, *ppos,
endbyte);
if (ret == 0) {
+ iocb->ki_pos = *ppos + written_buffered;
written += written_buffered;
invalidate_mapping_pages(mapping,
*ppos >> PAGE_CACHE_SHIFT,
/* buffered aio wouldn't have proper lock coverage today */
BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT));
+ if (unlikely(written <= 0))
+ goto no_sync;
+
if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) ||
((file->f_flags & O_DIRECT) && !direct_io)) {
- ret = filemap_fdatawrite_range(file->f_mapping, *ppos,
- *ppos + count - 1);
+ ret = filemap_fdatawrite_range(file->f_mapping,
+ iocb->ki_pos - written,
+ iocb->ki_pos - 1);
if (ret < 0)
written = ret;
}
if (!ret)
- ret = filemap_fdatawait_range(file->f_mapping, *ppos,
- *ppos + count - 1);
+ ret = filemap_fdatawait_range(file->f_mapping,
+ iocb->ki_pos - written,
+ iocb->ki_pos - 1);
}
+no_sync:
/*
* deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io
* function pointer which is called when o_direct io completes so that