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| author |   Jeff Layton <jlayton@kernel.org> | 2019-12-02 13:47:57 -0500 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@gmail.com> | 2020-03-30 12:42:41 +0200 |
| commit | 3bb48b4142bbf72045af5ebe72e65ccff6d02680 (patch) | |
| tree | 67bb46b59460b434cd3f68aa6f007b5c4228304e /include/linux/ceph | |
| parent | ceph: more caps.c lockdep assertions (diff) | |
| download | linux-dev-3bb48b4142bbf72045af5ebe72e65ccff6d02680.tar.xz linux-dev-3bb48b4142bbf72045af5ebe72e65ccff6d02680.zip | |
ceph: add flag to designate that a request is asynchronous
...and ensure that such requests are never queued. The MDS has need to
know that a request is asynchronous so add flags and proper
infrastructure for that.
Also, delegated inode numbers and directory caps are associated with the
session, so ensure that async requests are always transmitted on the
first attempt and are never queued to wait for session reestablishment.
If it does end up looking like we'll need to queue the request, then
have it return -EJUKEBOX so the caller can reattempt with a synchronous
request.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'include/linux/ceph')
| -rw-r--r-- | include/linux/ceph/ceph_fs.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index cb21c5cf12c3..9f747a1b8788 100644 --- a/include/linux/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -444,8 +444,9 @@ union ceph_mds_request_args { } __attribute__ ((packed)) lookupino; } __attribute__ ((packed)); -#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ -#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ +#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ +#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ +#define CEPH_MDS_FLAG_ASYNC 4 /* request is asynchronous */ struct ceph_mds_request_head { __le64 oldest_client_tid; |