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mm/zram: correct ZRAM_ZERO flag bit position

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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 cosmetic issue.

Also fix a typo, "page in now accessed" -> "page is now accessed"

Signed-off-by: Mahendran Ganesh <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Acked-by: Weijie Yang <[email protected]>
Acked-by: Sergey Senozhatsky <[email protected]>
Cc: Nitin Gupta <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mahendran Ganesh 2014-12-12 16:57:04 -08:00 • committed by Linus Torvalds
commit d49b1c254c
1 changed files with 2 additions and 2 deletions
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4
drivers/block/zram/zram_drv.h
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@ -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,
};