From: Xiubo Li <xiubli@xxxxxxxxxx> In some cases this may take a long time and will block renewing the caps to MDS. URL: https://tracker.ceph.com/issues/50223#note-21 Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> --- fs/ceph/caps.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index ba94ad6d45fe..5501c86b337d 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -4647,6 +4647,14 @@ unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc) iput(inode); spin_lock(&mdsc->cap_delay_lock); } + + /* + * Just in case too many dirty caps or slow + * performance case won't block the delayed + * work to renew the caps. + */ + if (jiffies - loop_start >= 5 * HZ) + break; } spin_unlock(&mdsc->cap_delay_lock); doutc(cl, "done\n"); -- 2.39.1
