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xen/scsifront: use offset_in_page() macro

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Use offset_in_page() macro instead of open-coding.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Geliang Tang 2017-04-22 09:21:13 +08:00 committed by Juergen Gross
parent d5ff5061c3
commit 6483e3135a
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/xen-scsifront.c
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@ -434,7 +434,7 @@ static int map_data_for_request(struct vscsifrnt_info *info,
if (seg_grants) {
page = virt_to_page(seg);
off = (unsigned long)seg & ~PAGE_MASK;
off = offset_in_page(seg);
len = sizeof(struct scsiif_request_segment) * data_grants;
while (len > 0) {
bytes = min_t(unsigned int, len, PAGE_SIZE - off);