Commit a221a737 authored by Gao Xiang's avatar Gao Xiang
Browse files

erofs: add missing documentation about `directio` mount option 



Document the `directio` mount option for file-backed mounts, because
recent users need this and this mount option has been available since
commit 6422cde1 ("erofs: use buffered I/O for file-backed mounts
by default") without proper documentation.

Reported-by: default avatarYuxuan Liu <cdjddzy@foxmail.com>
Signed-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
parent cc831ab3

Documentation/filesystems/erofs.rst

+2 −0
Original line number Diff line number Diff line
@@ -125,6 +125,8 @@ dax={always,never} Use direct access (no page cache). See 
                       Documentation/filesystems/dax.rst.

dax                    A legacy option which is an alias for ``dax=always``.

device=%s              Specify a path to an extra device to be used together.

directio               (For file-backed mounts) Use direct I/O to access backing

                       files, and asynchronous I/O will be enabled if supported.

fsid=%s                Specify a filesystem image ID for Fscache back-end.

domain_id=%s           Specify a domain ID in fscache mode so that different images

                       with the same blobs under a given domain ID can share storage.