From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Wed, 18 May 2022 03:40:45 +0000 (-0400)
Subject: block: Use PAGE_SECTORS_SHIFT
X-Git-Tag: microblaze-v6.1~158^2~32
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=069fc464f1e80df06d156ef606cebc61ee00b63e;p=linux-2.6-microblaze.git

block: Use PAGE_SECTORS_SHIFT

The bare use of '9' confuses some people.  We also don't need this cast,
since the compiler does exactly that cast for us.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---

diff --git a/block/partitions/core.c b/block/partitions/core.c
index 58034dd2d215..269c86523e67 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -712,8 +712,7 @@ void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p)
 		goto out;
 	}
 
-	page = read_mapping_page(mapping,
-			(pgoff_t)(n >> (PAGE_SHIFT - 9)), NULL);
+	page = read_mapping_page(mapping, n >> PAGE_SECTORS_SHIFT, NULL);
 	if (IS_ERR(page))
 		goto out;