The compr_data_size is a stat for compressed size of pages stored, which
should add comp_len when we compresse a page.
Meanwhile fix typos in comment:
* ZRAM_SAME means page consists the same element not the entirely zero page
* read_from_bdev_async() return 1 to avoid call page_endio() in zram_rw_page()
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
drivers/block/zram/zram_drv.c | 3 ++-
drivers/block/zram/zram_drv.h | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index e27daca..b2b75b1 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -455,7 +455,7 @@ void zram_page_end_io(struct bio *bio)
}
/*
- * Returns 0 if the submission is successful.
+ * Returns 1 if the submission is successful.
*/
static int read_from_bdev_async(struct zram *zram, struct bio_vec *bvec,
unsigned long entry, struct bio *parent)
@@ -1073,6 +1073,7 @@ static int __zram_bvec_write(struct zram *zram, struct
bio_vec *bvec,
} else {
zram_set_handle(zram, index, handle);
zram_set_obj_size(zram, index, comp_len);
+ atomic64_add(comp_len, &zram->stats.compr_data_size);
}
zram_slot_unlock(zram, index);
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index 5573dc2..31762db 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -60,7 +60,7 @@
/* Flags for zram pages (table[page_no].value) */
enum zram_pageflags {
- /* Page consists entirely of zeros */
+ /* Page consists the same element */
ZRAM_SAME = ZRAM_FLAG_SHIFT,
ZRAM_ACCESS, /* page is now accessed */
ZRAM_WB, /* page is stored on backing_device */
--
1.8.3.1
