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IB/usnic: Use for_each_sg instead of a for-loop

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Use for_each_sg() instead of an explicit for-loop to iterate over
scatter-gather list.

Signed-off-by: Upinder Malhi <umalhi@cisco.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Upinder Malhi 2014-01-09 14:48:45 -08:00 committed by Roland Dreier
parent 6a54d9f9a0
commit c5f855e08a
1 changed files with 9 additions and 8 deletions
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15
drivers/infiniband/hw/usnic/usnic_uiom.c
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@ -80,13 +80,14 @@ static void usnic_uiom_put_pages(struct list_head *chunk_list, int dirty)
{
struct usnic_uiom_chunk *chunk, *tmp;
struct page *page;
struct scatterlist *sg;
int i;
dma_addr_t pa;
list_for_each_entry_safe(chunk, tmp, chunk_list, list) {
for (i = 0; i < chunk->nents; i++) {
page = sg_page(&chunk->page_list[i]);
pa = sg_phys(&chunk->page_list[i]);
for_each_sg(chunk->page_list, sg, chunk->nents, i) {
page = sg_page(sg);
pa = sg_phys(sg);
if (dirty)
set_page_dirty_lock(page);
put_page(page);
@ -100,6 +101,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
int dmasync, struct list_head *chunk_list)
{
struct page **page_list;
struct scatterlist *sg;
struct usnic_uiom_chunk *chunk;
unsigned long locked;
unsigned long lock_limit;
@ -165,11 +167,10 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
chunk->nents = min_t(int, ret, USNIC_UIOM_PAGE_CHUNK);
sg_init_table(chunk->page_list, chunk->nents);
for (i = 0; i < chunk->nents; ++i) {
sg_set_page(&chunk->page_list[i],
page_list[i + off],
for_each_sg(chunk->page_list, sg, chunk->nents, i) {
sg_set_page(sg, page_list[i + off],
PAGE_SIZE, 0);
pa = sg_phys(&chunk->page_list[i]);
pa = sg_phys(sg);
usnic_dbg("va: 0x%lx pa: %pa\n",
cur_base + i*PAGE_SIZE, &pa);
}