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: baikal/mips/sdk6.1~5169^2~32
X-Git-Url: https://git.baikalelectronics.ru/?a=commitdiff_plain;h=705c20742d7654e94e149e5d7f0a875632b80803;p=kernel.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 58034dd2d2155..269c86523e67d 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;