ceph: use current_kernel_time() to get request time stamp
ceph uses ktime_get_real_ts() to get request time stamp. In most other cases, current_kernel_time() is used to get time stamp for filesystem operations (called by current_time()). There is granularity difference between ktime_get_real_ts() and current_kernel_time(). The later one can be up to one jiffy behind the former one. This can causes inode's ctime to go back. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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@ -1687,7 +1687,6 @@ struct ceph_mds_request *
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ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode)
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{
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struct ceph_mds_request *req = kzalloc(sizeof(*req), GFP_NOFS);
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struct timespec ts;
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if (!req)
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return ERR_PTR(-ENOMEM);
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@ -1706,8 +1705,7 @@ ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode)
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init_completion(&req->r_safe_completion);
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INIT_LIST_HEAD(&req->r_unsafe_item);
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ktime_get_real_ts(&ts);
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req->r_stamp = timespec_trunc(ts, mdsc->fsc->sb->s_time_gran);
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req->r_stamp = timespec_trunc(current_kernel_time(), mdsc->fsc->sb->s_time_gran);
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req->r_op = op;
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req->r_direct_mode = mode;
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