From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: mm/swap: remove unused local variable nr_shadows Since commit 55c653b71e8c ("mm: stop accounting shadow entries"), nr_shadows is not used anymore. Link: https://lkml.kernel.org/r/20210520134022.1370406-3-linmiaohe@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/swap_state.c | 5 ----- 1 file changed, 5 deletions(-) --- a/mm/swap_state.c~mm-swap-remove-unused-local-variable-nr_shadows +++ a/mm/swap_state.c @@ -114,8 +114,6 @@ int add_to_swap_cache(struct page *page, SetPageSwapCache(page); do { - unsigned long nr_shadows = 0; - xas_lock_irq(&xas); xas_create_range(&xas); if (xas_error(&xas)) @@ -124,7 +122,6 @@ int add_to_swap_cache(struct page *page, VM_BUG_ON_PAGE(xas.xa_index != idx + i, page); old = xas_load(&xas); if (xa_is_value(old)) { - nr_shadows++; if (shadowp) *shadowp = old; } @@ -260,7 +257,6 @@ void clear_shadow_from_swap_cache(int ty void *old; for (;;) { - unsigned long nr_shadows = 0; swp_entry_t entry = swp_entry(type, curr); struct address_space *address_space = swap_address_space(entry); XA_STATE(xas, &address_space->i_pages, curr); @@ -270,7 +266,6 @@ void clear_shadow_from_swap_cache(int ty if (!xa_is_value(old)) continue; xas_store(&xas, NULL); - nr_shadows++; } xa_unlock_irq(&address_space->i_pages); _