Messages in this thread Patch in this message | | | From | Mahendran Ganesh <> | Subject | [PATCH] mm/zram: correct ZRAM_ZERO flag bit position | Date | Wed, 12 Nov 2014 22:37:18 +0800 |
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In struct zram_table_entry, the element *value* contains obj size and obj zram flags. Bit 0 to bit (ZRAM_FLAG_SHIFT - 1) represent obj size, and bit ZRAM_FLAG_SHIFT to the highest bit of unsigned long represent obj zram_flags. So the first zram flag(ZRAM_ZERO) should be from ZRAM_FLAG_SHIFT instead of (ZRAM_FLAG_SHIFT + 1).
This patch fixes this issue.
Also this patch fixes a typo, "page in now accessed" -> "page is now accessed"
Signed-off-by: Mahendran Ganesh <opensource.ganesh@gmail.com> --- drivers/block/zram/zram_drv.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index c6ee271..b05a816 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -66,8 +66,8 @@ static const size_t max_zpage_size = PAGE_SIZE / 4 * 3; /* Flags for zram pages (table[page_no].value) */ enum zram_pageflags { /* Page consists entirely of zeros */ - ZRAM_ZERO = ZRAM_FLAG_SHIFT + 1, - ZRAM_ACCESS, /* page in now accessed */ + ZRAM_ZERO = ZRAM_FLAG_SHIFT, + ZRAM_ACCESS, /* page is now accessed */ __NR_ZRAM_PAGEFLAGS, }; -- 1.7.9.5
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