[PATCH v10 09/25] mm: Remove 'page_offset' from readahead loop

[Matthew Wilcox]

From: "Matthew Wilcox (Oracle)" <wi...@infradead.org>

Replace the page_offset variable with 'index + i'.

Signed-off-by: Matthew Wilcox (Oracle) <wi...@infradead.org>
Reviewed-by: John Hubbard <jhubb...@nvidia.com>
Reviewed-by: Christoph Hellwig <h...@lst.de>
Reviewed-by: William Kucharski <william.kuchar...@oracle.com>
---
 mm/readahead.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/mm/readahead.c b/mm/readahead.c
index 7ce320854bad..ddc63d3b07b8 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -180,12 +180,10 @@ void __do_page_cache_readahead(struct address_space 
*mapping,
         * Preallocate as many pages as we will need.
         */
        for (i = 0; i < nr_to_read; i++) {
-               pgoff_t page_offset = index + i;
-
-               if (page_offset > end_index)
+               if (index + i > end_index)
                        break;
 
-               page = xa_load(&mapping->i_pages, page_offset);
+               page = xa_load(&mapping->i_pages, index + i);
                if (page && !xa_is_value(page)) {
                        /*
                         * Page already present?  Kick off the current batch of
@@ -199,7 +197,7 @@ void __do_page_cache_readahead(struct address_space 
*mapping,
                page = __page_cache_alloc(gfp_mask);
                if (!page)
                        break;
-               page->index = page_offset;
+               page->index = index + i;
                list_add(&page->lru, &page_pool);
                if (i == nr_to_read - lookahead_size)
                        SetPageReadahead(page);
-- 
2.25.1