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ceph: re-calculate truncate_size for strip object 

Otherwise osd may truncate the object to larger size.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Yan, Zheng 2012-11-30 13:49:51 +08:00 committed by Alex Elder
parent 6e8575faa8
commit a41bad1a9b
1 changed files with 8 additions and 0 deletions
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8
net/ceph/osd_client.c
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@ -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;