tree 7853af71ad34b91c320ff73ce9fbcfb6134ee903
parent c8c6dd047704d3b833a648a2acebbed900188ca5
author Chao Yu <yuchao0@huawei.com> 1564065551 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1569436525 -0700

f2fs: disallow direct IO in atomic write

Atomic write needs page cache to cache data of transaction,
direct IO should never be allowed in atomic write, detect
and deny it when open atomic write file.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>