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| author | Xuehan Xu <xxhdx1985126@gmail.com> | 2018-10-11 12:55:39 +0300 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-10-22 11:28:21 +0300 |
| commit | 668028844174aa7069da1f8ea89a5dbc93e86216 (patch) | |
| tree | bcae7d1adac13c98ae2aacf495d46f37d699c30b /fs/ceph | |
| parent | 894868330a1e038ea4a65dbb81741eef70ad71b1 (diff) | |
| download | linux-668028844174aa7069da1f8ea89a5dbc93e86216.tar.xz | |
ceph: set timeout conditionally in __cap_delay_requeue
__cap_delay_requeue could be invoked through ceph_check_caps when there
exists caps that needs to be sent and are delayed by "i_hold_caps_min"
or "i_hold_caps_max". If __cap_delay_requeue sets timeout unconditionally,
there could be a chance that some "wanted" caps can not be release for a
long since their timeouts are reset every time they get delayed.
Fixes: http://tracker.ceph.com/issues/36369
Signed-off-by: Xuehan Xu <xuxuehan@360.cn>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/caps.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index b26ae1673992..f36946fdfb00 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -519,7 +519,8 @@ static void __cap_set_timeouts(struct ceph_mds_client *mdsc, * -> we take mdsc->cap_delay_lock */ static void __cap_delay_requeue(struct ceph_mds_client *mdsc, - struct ceph_inode_info *ci) + struct ceph_inode_info *ci, + bool set_timeout) { dout("__cap_delay_requeue %p flags %d at %lu\n", &ci->vfs_inode, ci->i_ceph_flags, ci->i_hold_caps_max); @@ -530,7 +531,8 @@ static void __cap_delay_requeue(struct ceph_mds_client *mdsc, goto no_change; list_del_init(&ci->i_cap_delay_list); } - __cap_set_timeouts(mdsc, ci); + if (set_timeout) + __cap_set_timeouts(mdsc, ci); list_add_tail(&ci->i_cap_delay_list, &mdsc->cap_delay_list); no_change: spin_unlock(&mdsc->cap_delay_lock); @@ -720,7 +722,7 @@ void ceph_add_cap(struct inode *inode, dout(" issued %s, mds wanted %s, actual %s, queueing\n", ceph_cap_string(issued), ceph_cap_string(wanted), ceph_cap_string(actual_wanted)); - __cap_delay_requeue(mdsc, ci); + __cap_delay_requeue(mdsc, ci, true); } if (flags & CEPH_CAP_FLAG_AUTH) { @@ -1647,7 +1649,7 @@ int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, if (((was | ci->i_flushing_caps) & CEPH_CAP_FILE_BUFFER) && (mask & CEPH_CAP_FILE_BUFFER)) dirty |= I_DIRTY_DATASYNC; - __cap_delay_requeue(mdsc, ci); + __cap_delay_requeue(mdsc, ci, true); return dirty; } @@ -2065,7 +2067,7 @@ ack: /* Reschedule delayed caps release if we delayed anything */ if (delayed) - __cap_delay_requeue(mdsc, ci); + __cap_delay_requeue(mdsc, ci, false); spin_unlock(&ci->i_ceph_lock); @@ -2125,7 +2127,7 @@ retry: if (delayed) { spin_lock(&ci->i_ceph_lock); - __cap_delay_requeue(mdsc, ci); + __cap_delay_requeue(mdsc, ci, true); spin_unlock(&ci->i_ceph_lock); } } else { |