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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 /fs/ceph/inode.c | |
| parent | c0e385b1067a9d1d6558d58a2f4d56b4db787177 (diff) | |
| download | linux-719a2514e9bf313c3627078926d56bc2a8b290d1.tar.gz linux-719a2514e9bf313c3627078926d56bc2a8b290d1.tar.bz2 linux-719a2514e9bf313c3627078926d56bc2a8b290d1.zip | |
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 'fs/ceph/inode.c')
| -rw-r--r-- | fs/ceph/inode.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 73f986efb1fd..a618e8ae9d0f 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -479,6 +479,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb) ci->i_head_snapc = NULL; ci->i_snap_caps = 0; + ci->i_last_rd = ci->i_last_wr = jiffies - 3600 * HZ; for (i = 0; i < CEPH_FILE_MODE_BITS; i++) ci->i_nr_by_mode[i] = 0; @@ -639,7 +640,7 @@ int ceph_fill_file_size(struct inode *inode, int issued, if ((issued & (CEPH_CAP_FILE_CACHE| CEPH_CAP_FILE_BUFFER)) || mapping_mapped(inode->i_mapping) || - __ceph_caps_file_wanted(ci)) { + __ceph_is_file_opened(ci)) { ci->i_truncate_pending++; queue_trunc = 1; } @@ -1013,6 +1014,13 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page, fill_inline = true; } + if (cap_fmode >= 0) { + if (!info_caps) + pr_warn("mds issued no caps on %llx.%llx\n", + ceph_vinop(inode)); + __ceph_touch_fmode(ci, mdsc, cap_fmode); + } + spin_unlock(&ci->i_ceph_lock); if (fill_inline) |