[PATCH] lib/scatterlist: Use sg_phys() helper

[Sui Jingfeng]

This shorten the length of code in horizential direction, therefore is
easier to read.

Signed-off-by: Sui Jingfeng <sui.jingf...@linux.dev>
---
 lib/scatterlist.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 473b2646f71c..5bb6b8aff232 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -474,14 +474,14 @@ int sg_alloc_append_table_from_pages(struct 
sg_append_table *sgt_append,
                return -EOPNOTSUPP;
 
        if (sgt_append->prv) {
-               unsigned long next_pfn = 
(page_to_phys(sg_page(sgt_append->prv)) +
-                       sgt_append->prv->offset + sgt_append->prv->length) / 
PAGE_SIZE;
+               unsigned long next_pfn;
 
                if (WARN_ON(offset))
                        return -EINVAL;
 
                /* Merge contiguous pages into the last SG */
                prv_len = sgt_append->prv->length;
+               next_pfn = (sg_phys(sgt_append->prv) + prv_len) / PAGE_SIZE;
                if (page_to_pfn(pages[0]) == next_pfn) {
                        last_pg = pfn_to_page(next_pfn - 1);
                        while (n_pages && pages_are_mergeable(pages[0], 
last_pg)) {
-- 
2.34.1