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mm/swapfile.c: use list_{next,first}_entry

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To make the intention clearer, use list_{next,first}_entry instead of
list_entry().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geliang Tang 2016-01-14 15:20:45 -08:00 committed by Linus Torvalds
parent 8c9c1701c7
commit a8ae499170
1 changed files with 4 additions and 10 deletions
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14
mm/swapfile.c
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@ -165,8 +165,6 @@ static void discard_swap_cluster(struct swap_info_struct *si,
int found_extent = 0;
while (nr_pages) {
struct list_head *lh;
if (se->start_page <= start_page &&
start_page < se->start_page + se->nr_pages) {
pgoff_t offset = start_page - se->start_page;
@ -188,8 +186,7 @@ static void discard_swap_cluster(struct swap_info_struct *si,
break;
}
lh = se->list.next;
se = list_entry(lh, struct swap_extent, list);
se = list_next_entry(se, list);
}
}
@ -903,7 +900,7 @@ int swp_swapcount(swp_entry_t entry)
VM_BUG_ON(page_private(page) != SWP_CONTINUED);
do {
page = list_entry(page->lru.next, struct page, lru);
page = list_next_entry(page, lru);
map = kmap_atomic(page);
tmp_count = map[offset];
kunmap_atomic(map);
@ -1633,14 +1630,11 @@ static sector_t map_swap_entry(swp_entry_t entry, struct block_device **bdev)
se = start_se;
for ( ; ; ) {
struct list_head *lh;
if (se->start_page <= offset &&
offset < (se->start_page + se->nr_pages)) {
return se->start_block + (offset - se->start_page);
}
lh = se->list.next;
se = list_entry(lh, struct swap_extent, list);
se = list_next_entry(se, list);
sis->curr_swap_extent = se;
BUG_ON(se == start_se); /* It *must* be present */
}
@ -1664,7 +1658,7 @@ static void destroy_swap_extents(struct swap_info_struct *sis)
while (!list_empty(&sis->first_swap_extent.list)) {
struct swap_extent *se;
se = list_entry(sis->first_swap_extent.list.next,
se = list_first_entry(&sis->first_swap_extent.list,
struct swap_extent, list);
list_del(&se->list);
kfree(se);