[PATCH v2 5/5] zram: use generic PAGE_SECTORS and PAGE_SECTORS_SHIFT

Luis Chamberlain posted 5 patches 1 year, 1 month ago
There is a newer version of this series
[PATCH v2 5/5] zram: use generic PAGE_SECTORS and PAGE_SECTORS_SHIFT
Posted by Luis Chamberlain 1 year, 1 month ago
Instead of re-defining the already existing constants use the provided ones:

So replace:

 o SECTORS_PER_PAGE_SHIFT with PAGE_SECTORS_SHIFT
 o SECTORS_PER_PAGE       with PAGE_SECTORS

This produces no functional changes.

Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/block/zram/zram_drv.c | 12 ++++++------
 drivers/block/zram/zram_drv.h |  2 --
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index f6d90f1ba5cf..5fdeb78ace9a 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1834,8 +1834,8 @@ static ssize_t recompress_store(struct device *dev,
 static void zram_bio_discard(struct zram *zram, struct bio *bio)
 {
 	size_t n = bio->bi_iter.bi_size;
-	u32 index = bio->bi_iter.bi_sector >> SECTORS_PER_PAGE_SHIFT;
-	u32 offset = (bio->bi_iter.bi_sector & (SECTORS_PER_PAGE - 1)) <<
+	u32 index = bio->bi_iter.bi_sector >> PAGE_SECTORS_SHIFT;
+	u32 offset = (bio->bi_iter.bi_sector & (PAGE_SECTORS - 1)) <<
 			SECTOR_SHIFT;
 
 	/*
@@ -1876,8 +1876,8 @@ static void zram_bio_read(struct zram *zram, struct bio *bio)
 
 	start_time = bio_start_io_acct(bio);
 	bio_for_each_segment(bv, bio, iter) {
-		u32 index = iter.bi_sector >> SECTORS_PER_PAGE_SHIFT;
-		u32 offset = (iter.bi_sector & (SECTORS_PER_PAGE - 1)) <<
+		u32 index = iter.bi_sector >> PAGE_SECTORS_SHIFT;
+		u32 offset = (iter.bi_sector & (PAGE_SECTORS - 1)) <<
 				SECTOR_SHIFT;
 
 		if (zram_bvec_read(zram, &bv, index, offset, bio) < 0) {
@@ -1903,8 +1903,8 @@ static void zram_bio_write(struct zram *zram, struct bio *bio)
 
 	start_time = bio_start_io_acct(bio);
 	bio_for_each_segment(bv, bio, iter) {
-		u32 index = iter.bi_sector >> SECTORS_PER_PAGE_SHIFT;
-		u32 offset = (iter.bi_sector & (SECTORS_PER_PAGE - 1)) <<
+		u32 index = iter.bi_sector >> PAGE_SECTORS_SHIFT;
+		u32 offset = (iter.bi_sector & (PAGE_SECTORS - 1)) <<
 				SECTOR_SHIFT;
 
 		if (zram_bvec_write(zram, &bv, index, offset, bio) < 0) {
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index ca7a15bd4845..9f2543af5c76 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -21,8 +21,6 @@
 
 #include "zcomp.h"
 
-#define SECTORS_PER_PAGE_SHIFT	(PAGE_SHIFT - SECTOR_SHIFT)
-#define SECTORS_PER_PAGE	(1 << SECTORS_PER_PAGE_SHIFT)
 #define ZRAM_LOGICAL_BLOCK_SHIFT 12
 #define ZRAM_LOGICAL_BLOCK_SIZE	(1 << ZRAM_LOGICAL_BLOCK_SHIFT)
 #define ZRAM_SECTOR_PER_LOGICAL_BLOCK	\
-- 
2.39.2
Re: [PATCH v2 5/5] zram: use generic PAGE_SECTORS and PAGE_SECTORS_SHIFT
Posted by Johannes Thumshirn 1 year, 1 month ago
On 26.05.23 09:34, Luis Chamberlain wrote:
> +	u32 index = bio->bi_iter.bi_sector >> PAGE_SECTORS_SHIFT;
> +	u32 offset = (bio->bi_iter.bi_sector & (PAGE_SECTORS - 1)) <<
>  			SECTOR_SHIFT;

(PAGE_SECTORS - 1) is SECTOR_MASK, please use this.

Thanks,
	Johannes