On 2023/1/11 16:15, Jingbo Xu wrote:
The share domain feature for fscache mode has been merged, and let's add
documentation for 'domain_id' mount option.
Since the EROFS share domain feature for fscache mode has been available
since Linux v6.1, let's add documentation for 'domain_id' mount option.
Cc: linux-doc@xxxxxxxxxxxxxxx
Signed-off-by: Jingbo Xu <jefflexu@xxxxxxxxxxxxxxxxx>
---
Documentation/filesystems/erofs.rst | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/filesystems/erofs.rst b/Documentation/filesystems/erofs.rst
index 067fd1670b1f..958cad2c4997 100644
--- a/Documentation/filesystems/erofs.rst
+++ b/Documentation/filesystems/erofs.rst
@@ -120,6 +120,9 @@ dax={always,never} Use direct access (no page cache). See
dax A legacy option which is an alias for ``dax=always``.
device=%s Specify a path to an extra device to be used together.
fsid=%s Specify a filesystem image ID for Fscache back-end.
+domain_id=%s Specify a domain ID for Fscache back-end. The blob
+ images are shared among filesystem instances in the same
+ domain.
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.
Thanks,
Gao Xiang
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Sysfs Entries
