diff options
| author | Ronnie Sahlberg <lsahlber@redhat.com> | 2019-03-12 13:58:31 +1000 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-03-14 19:32:35 -0500 |
| commit | b0f6df737a1c5d9d5ff90cc946205d8af46cc067 (patch) | |
| tree | 4f963741384b6f80b0ec03ac420854486dd57da3 /fs/cifs/cifsglob.h | |
| parent | ab7b10cf4fd14496292c62099f3a0a1c1ef90c0e (diff) | |
cifs: cache FILE_ALL_INFO for the shared root handle
When we open the shared root handle also ask for FILE_ALL_INFORMATION since
we can do this at zero cost as part of a compound.
Cache this information as long as the lease is held and return and serve any
future requests from cache.
This allows us to serve "stat /<mountpoint>" directly from cache and avoid
a network roundtrip. Since clients often want to do this quite a lot
this improve performance slightly.
As an example: xfstest generic/533 performs 43 stat operations on the root
of the share while it is run. Which are eliminated with this patch.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index ddb299494cd6..8b9ecf8c2986 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -962,11 +962,14 @@ cap_unix(struct cifs_ses *ses) struct cached_fid { bool is_valid:1; /* Do we have a useable root fid */ + bool file_all_info_is_valid:1; + struct kref refcount; struct cifs_fid *fid; struct mutex fid_mutex; struct cifs_tcon *tcon; struct work_struct lease_break; + struct smb2_file_all_info file_all_info; }; /* |