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| author | Yan, Zheng <zyan@redhat.com> | 2020-03-05 20:21:00 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2020-03-30 12:42:42 +0200 |
| commit | 719a2514e9bf313c3627078926d56bc2a8b290d1 (patch) | |
| tree | 6ecdb340430c67d2ae687ed638569bfae3099bfb /mm | |
| parent | c0e385b1067a9d1d6558d58a2f4d56b4db787177 (diff) | |
ceph: consider inode's last read/write when calculating wanted caps
Add i_last_rd and i_last_wr to ceph_inode_info. These fields are
used to track the last time the client acquired read/write caps for
the inode.
If there is no read/write on an inode for 'caps_wanted_delay_max'
seconds, __ceph_caps_file_wanted() does not request caps for read/write
even there are open files.
Call __ceph_touch_fmode() for dir operations. __ceph_caps_file_wanted()
calculates dir's wanted caps according to last dir read/modification. If
there is recent dir read, dir inode wants CEPH_CAP_ANY_SHARED caps. If
there is recent dir modification, also wants CEPH_CAP_FILE_EXCL.
Readdir is a special case. Dir inode wants CEPH_CAP_FILE_EXCL after
readdir, as with that, modifications do not need to release
CEPH_CAP_FILE_SHARED or invalidate all dentry leases issued by readdir.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions