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Commit a41bad1a authored by Yan, Zheng's avatar Yan, Zheng Committed by Alex Elder
Browse files

ceph: re-calculate truncate_size for strip object 



Otherwise osd may truncate the object to larger size.

Signed-off-by: default avatarYan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: default avatarSage Weil <sage@inktank.com>
parent 6e8575fa

net/ceph/osd_client.c

+8 −0
Original line number Diff line number Diff line
@@ -76,8 +76,16 @@ int ceph_calc_raw_layout(struct ceph_osd_client *osdc, 
		     orig_len - *plen, off, *plen);



	if (op_has_extent(op->op)) {

		u32 osize = le32_to_cpu(layout->fl_object_size);

		op->extent.offset = objoff;

		op->extent.length = objlen;

		if (op->extent.truncate_size <= off - objoff) {

			op->extent.truncate_size = 0;

		} else {

			op->extent.truncate_size -= off - objoff;

			if (op->extent.truncate_size > osize)

				op->extent.truncate_size = osize;

		}

	}

	req->r_num_pages = calc_pages_for(off, *plen);

	req->r_page_alignment = off & ~PAGE_MASK;